ITECH IT6000C Series Bidirectional Programmable DC Power Supply User Manual

: July 23, 2024
: iTech

Table of Contents

IT6000C Series Bidirectional Programmable DC Power Supply
Product Information
Specifications:
Product Usage Instructions:
Quality Certification and Assurance:
Warranty Information:
Safety Precautions:
- FAQ:
Q: How long is the warranty period?
Q: Where can I register for warranty extension?

IT6000C Series Bidirectional Programmable DC Power Supply

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Product Information

Specifications:

Model: IT6000C Series
Version: V2.6/10,2023
Warranty: 1 year from the date of delivery

Product Usage Instructions:

Quality Certification and Assurance:

We certify that the IT6000C Series instrument meets all
published specifications at the time of shipment from the
factory.

Warranty Information:

ITECH warrants that the product will be free from defects in
material and workmanship under normal use for a period of one (1)
year from the date of delivery. To extend the warranty to two (2)
years, complete product registration at ITECH Warranty
Registration. For warranty service or repair, return the
product to a designated service center.

Safety Precautions:

Ensure to comply with safety precautions at all times during
operation. Failure to adhere may result in default under safety
standards. Refer to the manual for specific warning and caution
information.

FAQ:

Q: How long is the warranty period?

A: The standard warranty period is one (1) year from the date of
delivery. It can be extended to two (2) years by completing product
registration.

Q: Where can I register for warranty extension?

A: You can register for warranty extension at ITECH Warranty
Registration.

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Bi-directional Programmable DC Power Supply
IT6000C Series User Manual
Model: IT6000C Series Version: V2.6/10,2023

Notices

© Itech Electronic, Co., Ltd. 2023 No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior permission and written consent from Itech Electronic, Co., Ltd. as governed by international copyright laws.
Manual Part Number
Trademarks
Pentium is U.S. registered trademarks of Intel Corporation. Microsoft, Visual Studio, Windows and MS Windows are registered trademarks of Microsoft Corporation in the United States and/or other countries and regions.

Warranty
The materials contained in this document are provided “as is”, and is subject to change, without prior notice, in future editions. Further, to the maximum extent permitted by applicable laws, ITECH disclaims all warrants, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. ITECH shall not be held liable for errors or for incidental or indirect damages in connection with the furnishing, use or application of this document or of any information contained herein. Should ITECH and the user enter into a separate written agreement with warranty terms covering the materials in this document that conflict with these terms, the warranty terms in the separate agreement shall prevail.
Technology Licenses
The hardware and/or software described herein are furnished under a license and may be used or copied only in accordance with the terms of such license.
Restricted Rights Legend
Restricted permissions of the U.S. government. Permissions for software and technical data which are authorized to the U.S. Government only include those for custom provision to end users. ITECH follows FAR 12.211 (technical data), 12.212 (computer software). DFARS 252.227-7015 (technical datacommercial products) and DFARS 227.7202-3 (permissions for commercial computer software or computer software documents) while providing the customized business licenses of software and technical data.

Safety Notices
A CAUTION sign denotes a hazard. It calls attention to an operating procedure or practice that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met.
A WARNING sign denotes a hazard. It calls attention to an operating procedure or practice that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.
A NOTE sign denotes important hint. It calls attention to tips or supplementary information that is essential for users to refer to.

IT6000C Series User Manual
Quality Certification and Assurance
We certify that series instrument meets all the published specifications at time of shipment from the factory.
Warranty
ITECH warrants that the product will be free from defects in material and workmanship under normal use for a period of one (1) year from the date of delivery (except those described in the Limitation of Warranty below).
Visit https://www.itechate.com/en/support/register.html to complete product registration by filling out the necessary information to extend the warranty to two (2) years. For warranty service or repair, the product must be returned to a service center designated by ITECH.
· The product returned to ITECH for warranty service must be shipped PRE-
PAID. And ITECH will pay for return of the product to customer.
· If the product is returned to ITECH for warranty service from overseas, all
the freights, duties and other taxes shall be on the account of customer.
Limitation of Warranty
This Warranty will be rendered invalid in case of the following:
· Damage caused by circuit installed by customer or using customer own
products or accessories;
· Modified or repaired by customer without authorization; · Damage caused by circuit installed by customer or not operating our prod-
ucts under designated environment;
· The product model or serial number is altered, deleted, removed or made il-
legible by customer;
· Damaged as a result of accidents, including but not limited to lightning, mois-
ture, fire, improper use or negligence.

I

Safety Symbols

IT6000C Series User Manual

Direct current
Alternating current Both direct and alternating current Chassis (earth ground) symbol.
Earth ( ground) terminal
Caution

Warning ( refer to this manual for specific Warning or Caution information)

A chassis

–

terminal

ON ( power) OFF ( power) Power-on state Power-off state Reference terminal Positive terminal Negative terminal
–

Safety Precautions
The following safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or specific warnings elsewhere in this manual will constitute a default under safety standards of design, manufacture and intended use of the instrument. ITECH assumes no liability for the customer’s failure to comply with these precautions.

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IT6000C Series User Manual
· Do not use the instrument if it is damaged. Before operation, check
the casing to see whether it cracks. Do not operate the instrument in the presence of inflammable gasses, vapors or dusts.
· The instrument is provided with a power cord during delivery and
should be connected to a socket with a protective earth terminal, a junction box or a three-phase distribution box. Before operation, be sure that the instrument is well grounded.
· Please always use the provided cable to connect the instrument. · Check all marks on the instrument before connecting the instru-
ment to power supply.
· Ensure the voltage fluctuation of mains supply is less than 10% of
the working voltage range in order to reduce risks of fire and electric shock.
· Do not install alternative parts on the instrument or perform any un-
authorized modification.
· Do not use the instrument if the detachable cover is removed or
loosen.
· To prevent the possibility of accidental injuries, be sure to use the
power adapter supplied by the manufacturer only.
· We do not accept responsibility for any direct or indirect financial
damage or loss of profit that might occur when using the instrument.
· This instrument is used for industrial purposes, do not apply this
product to IT power supply system.
· Never use the instrument with a life-support system or any other
equipment subject to safety requirements.

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IT6000C Series User Manual
· SHOCK HAZARD Ground the Instrument. This product is provided
with a protective earth terminal. To minimize shock hazard, the instrument must be connected to the AC mains through a grounded power cable, with the ground wire firmly connected to an electrical ground (safety ground) at the power outlet or distribution box. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in injury or death.
· Before applying power, verify that all safety precautions are taken.
All connections must be made with the instrument turned off, and must be performed by qualified personnel who are aware of the hazards involved. Improper actions can cause fatal injury as well as equipment damage.
· SHOCK HAZARD, LETHAL VOLTAGES This product can output the
dangerous voltage that can cause personal injury, and the operator must always be protected from electric shock. Ensure that the output electrodes are either insulated or covered using the safety covers provided, so that no accidental contact with lethal voltages can occur.
· Never touch cables or connections immediately after turning off the
instrument. Verify that there is no dangerous voltage on the electrodes or sense terminals before touching them.
· After using the device, turn off the power switch of the device be-
fore unplugging the power cord or disassembling the terminals. Do not touch the cable or the terminal immediately. Depending on the model, the dangerous voltage at the plug or terminal is maintained for 10 seconds after the device is switched off. Make sure that there is no dangerous voltage before touching them.

· Failure to use the instrument as directed by the manufacturer may
render its protective features void.
· Always clean the casing with a dry cloth. Do not clean the internals. · Make sure the vent hole is always unblocked.

Environmental Conditions
The instrument is designed for indoor use and an area with low condensation. The table below shows the general environmental requirements for the instrument.

IV

Environmental Conditions Operating temperature Operating humidity Storage temperature Altitude Installation category Pollution degree

IT6000C Series User Manual Requirements 0°C50°C 20%80%( non-condensation) -10°C70 °C Operating up to 2,000 meters II Pollution degree 2

In order to ensure the accuracy of measurement, it is recommended to operate the instrument half an hour after start-up.
Regulation Tag
The CE tag shows that the product complies with the provisions of all relevant European laws (if the year is shown, it indicates that the year when the design is approved).
The UKCA tag shows that the product complies with the provisions of all relevant United Kingdom laws (if the year is shown, it indicates that the year when the design is approved).
This instrument complies with the WEEE directive (2002/96/EC) tag requirements. This attached product tag shows that the electrical/electronic product cannot be discarded in household waste.
This symbol indicates that no danger will happen or toxic substances will not leak or cause damage in normal use within the specified period. The service life of the product is 10 years. The product can be used safely within the environmental protection period; otherwise, the product should be put into the recycling system.

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IT6000C Series User Manual
Waste Electrical and Electronic Equipment (WEEE) Directive
Waste electrical and electronic equipment (WEEE) directive, 2002/96/EC The product complies with tag requirements of the WEEE directive (2002/96/EC). This tag indicates that the electronic equipment cannot be disposed of as ordinary household waste. Product Category According to the equipment classification in Annex I of the WEEE directive, this instrument belongs to the “Monitoring” product. If you want to return the unnecessary instrument, please contact the nearest sales office of ITECH.

VI

Compliance Information

IT6000C Series User Manual

Complies with the essential requirements of the following applicable European Directives, and carries the CE marking accordingly:
· Electromagnetic Compatibility (EMC) Directive 2014/30/EU · Low-Voltage Directive (Safety) 2014/35/EU
Conforms with the following product standards:
EMC Standard
IEC 61326-1:2012/ EN 61326-1:2013 ¹²³ Reference Standards
CISPR 11:2015+A1:2016 Ed 6.1 IEC 61000-3-2: 2018 RLV IEC 61000-3-3: 2013+A1:2017 IEC 61000-4-2:2008 IEC 61000-4-3 2006+A1:2007+A2:2010/ EN 61000-4-3 A1:2008+A2:2010 IEC 61000-4-4:2012 IEC 61000-4-5:2014+A1:2017 IEC 61000-4-6:2013+cor1:2015 IEC 61000-4-11:2004+A1:2017
1. The product is intended for use in non-residential/non-domestic environments. Use of the product in residential/domestic environments may cause electromagnetic interference.
2. Connection of the instrument to a test object may produce radiations beyond the specified limit.
3. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above.
Safety Standard
IEC 61010-1:2010+A1:2016

VII

Content

IT6000C Series User Manual

Quality Certification and Assurance ………………………………………………………………………. I Warranty ……………………………………………………………………………………………………………. I Limitation of Warranty ………………………………………………………………………………………….. I Safety Symbols………………………………………………………………………………………………….. II Safety Precautions……………………………………………………………………………………………… II Environmental Conditions…………………………………………………………………………………… IV Regulation Tag…………………………………………………………………………………………………… V Waste Electrical and Electronic Equipment (WEEE) Directive ………………………………… VI Compliance Information…………………………………………………………………………………….. VII 1 Quick Reference………………………………………………………………………………………………….. 1 1.1 Brief Introduction………………………………………………………………………………………… 1 1.2 Front-Panel Overview …………………………………………………………………………………. 5 1.3 Keyboard Introduction…………………………………………………………………………………. 5 1.4 Push-on Knob ……………………………………………………………………………………………. 8 1.5 Rear Panel Introduction ………………………………………………………………………………. 9 1.6 VFD Indicator Lamps Description …………………………………………………………………11 1.7 Configuration Menu Function……………………………………………………………………… 12 1.8 System Menu Function ……………………………………………………………………………… 13 1.9 Options Introduction………………………………………………………………………………….. 18 2 Inspection and Installation…………………………………………………………………………………… 21 2.1 Unpacking and Transportation……………………………………………………………………. 21 2.2 Verifying the Shipment ………………………………………………………………………………. 24 2.3 Instrument Size Introduction ………………………………………………………………………. 25 2.4 Connecting the Power Cord……………………………………………………………………….. 29 2.5 Connecting the Device Under Test (DUT) ……………………………………………………. 35 2.6 Remote Interface Connection …………………………………………………………………….. 41
2.6.1 USB Interface …………………………………………………………………………………. 41 2.6.2 LAN Interface………………………………………………………………………………….. 42 2.6.3 CAN Interface …………………………………………………………………………………. 47 2.6.4 GPIB Interface (Optional) …………………………………………………………………. 48 2.6.5 RS232 Interface (Optional)……………………………………………………………… 49 3 Getting Started ………………………………………………………………………………………………….. 52 3.1 Power-on Self- Test……………………………………………………………………………………. 52 3.2 Set Output Value ………………………………………………………………………………………. 56 3.3 Use the Front Panel Menu. ………………………………………………………………………… 57 3.4 On/Off Control ………………………………………………………………………………………….. 58 4 Power Supply Function ………………………………………………………………………………………. 60 4.1 Set the Output Voltage………………………………………………………………………………. 60 4.2 Set the Output Current………………………………………………………………………………. 60 4.3 Set the Output Power………………………………………………………………………………… 61 4.4 Config Menu for Power Supply …………………………………………………………………… 61 4.4.1 Set the CC/CV Priority Mode…………………………………………………………….. 61 4.4.2 Set the Internal Resistance ………………………………………………………………. 65 4.4.3 CR Function in Sink Mode ………………………………………………………………… 66 4.4.4 Set the Output-On/Output-Off Delay ………………………………………………….. 67 4.5 Protection Function for Power Supply …………………………………………………………. 67 4.5.1 Set Over-Voltage Protection (OVP)……………………………………………………. 70 4.5.2 Set Over-Current Protection (OCP)……………………………………………………. 71 4.5.3 Set Over-Power Protection (OPP)……………………………………………………… 72 4.5.4 Set Under-Current Protection (UCP)………………………………………………….. 73 4.5.5 Set Under-Voltage Protection (UVP)………………………………………………….. 74 4.5.6 Over-Temperature Protection (OTP) ………………………………………………….. 74 4.5.7 Sense Reverse Protection………………………………………………………………… 75 4.6 Function Menu for Power Supply………………………………………………………………… 76 4.6.1 LIST Function …………………………………………………………………………………. 76

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IT6000C Series User Manual

4.6.2 Battery Charging/Discharging Test Function……………………………………….. 87 4.6.3 Built-in Waveform Function ………………………………………………………………. 90 4.6.4 Solar Photovoltaic Curve Simulation Function (SAS) …………………………. 148 4.6.5 Battery Simulation Function ……………………………………………………………. 153 5 Basic Operation……………………………………………………………………………………………….. 158 5.1 Local/Remote Mode Switch ……………………………………………………………………… 158 5.2 Key Lock Function ………………………………………………………………………………….. 158 5.3 Save and Recall Operations …………………………………………………………………….. 159 5.3.1 Save Operation……………………………………………………………………………… 160 5.3.2 Recall Operation……………………………………………………………………………. 160 5.4 Data Logging Function…………………………………………………………………………….. 160 5.5 Set the Beeper Status (Beep) …………………………………………………………………… 163 5.6 Set the Power-on State (PowerOn) …………………………………………………………… 164 5.7 Sense Function (Sense) ………………………………………………………………………….. 165 5.8 Select Trigger Source (Trig Source) ………………………………………………………….. 166 5.9 Set the Communication Information (I/O Con) ……………………………………………. 167 5.10 Set Parallel Operation Mode (Parallel) …………………………………………………….. 168 5.11 Digital I/O Function (Digital Port)……………………………………………………………… 172 5.11.1 IO1. Ps-Clear, Not-Invert …………………………………………………………….. 176 5.11.2 IO2. Ps, Not-Invert ……………………………………………………………………… 178 5.11.3 IO3. Off-Status, Not-Invert …………………………………………………………… 179 5.11.4 IO4. Ext-Trig, Not- Invert………………………………………………………………. 181 5.11.5 IO5. INH-Living, Not-Invert ………………………………………………………….. 184 5.11.6 IO6. Sync-On, Not-Invert …………………………………………………………….. 188 5.11.7 IO7. Sync-Off, Not-Invert …………………………………………………………….. 190 5.12 Analogue Function (Ext-Program) (Optional) ……………………………………………. 192 5.13 Restored to Factory Setting (System Reset) …………………………………………….. 197 5.14 View the System Information (System Info) ……………………………………………… 199 5.15 System Upgrade …………………………………………………………………………………… 200 6 Technical Specification……………………………………………………………………………………… 204 6.1 Main Specification…………………………………………………………………………………… 204 6.1.1 80V…………………………………………………………………………………………………….. 205 6.1.1.1 IT6005C-80-150 …………………………………………………………………………. 205 6.1.1.2 IT6010C-80-300 …………………………………………………………………………. 207 6.1.1.3 IT6015C-80-450 …………………………………………………………………………. 209 6.1.1.4 IT6030C-80-900 …………………………………………………………………………..211 6.1.1.5 IT6045C-80-1350 ……………………………………………………………………….. 214 6.1.1.6 IT6060C-80-1800 ……………………………………………………………………….. 216 6.1.1.7 IT6075C-80-2040 ……………………………………………………………………….. 218 6.1.1.8 IT6090C-80-2040 ……………………………………………………………………….. 220 6.1.1.9 IT6105C-80-2040 ……………………………………………………………………….. 223 6.1.1.10 IT6120C-80-2040 ……………………………………………………………………… 225 6.1.2 300V…………………………………………………………………………………………………… 227 6.1.2.1 IT6006C-300-75 …………………………………………………………………………. 227 6.1.2.2 IT6012C-300-150 ……………………………………………………………………….. 229 6.1.2.3 IT6018C-300-225 ……………………………………………………………………….. 232 6.1.2.4 IT6036C-300-450 ……………………………………………………………………….. 234 6.1.2.5 IT6054C-300-675 ……………………………………………………………………….. 236 6.1.2.6 IT6072C-300-900 ……………………………………………………………………….. 238 6.1.2.7 IT6090C-300-1125 ……………………………………………………………………… 240 6.1.2.8 IT6108C-300-1350 ……………………………………………………………………… 243 6.1.2.9 IT6126C-300-1575 ……………………………………………………………………… 245 6.1.2.10 IT6144C-300-1800 ……………………………………………………………………. 247 6.1.3 500V…………………………………………………………………………………………………… 249 6.1.3.1 IT6006C-500-40 …………………………………………………………………………. 249 6.1.3.2 IT6012C-500-80 …………………………………………………………………………. 252 6.1.3.3 IT6018C-500-120 ……………………………………………………………………….. 254 6.1.3.4 IT6036C-500-240 ……………………………………………………………………….. 256

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IT6000C Series User Manual
6.1.3.5 IT6054C-500-360 ……………………………………………………………………….. 258 6.1.3.6 IT6072C-500-480 ……………………………………………………………………….. 260 6.1.3.7 IT6090C-500-600 ……………………………………………………………………….. 263 6.1.3.8 IT6108C-500-720 ……………………………………………………………………….. 265 6.1.3.9 IT6126C-500-840 ……………………………………………………………………….. 267 6.1.3.10 IT6144C-500-960 ……………………………………………………………………… 269 6.1.4 800V…………………………………………………………………………………………………… 272 6.1.4.1 IT6006C-800-25 …………………………………………………………………………. 272 6.1.4.2 IT6012C-800-50 …………………………………………………………………………. 274 6.1.4.3 IT6018C-800-75 …………………………………………………………………………. 276 6.1.4.4 IT6036C-800-150 ……………………………………………………………………….. 278 6.1.4.5 IT6054C-800-225 ……………………………………………………………………….. 280 6.1.4.6 IT6072C-800-300 ……………………………………………………………………….. 282 6.1.4.7 IT6090C-800-375 ……………………………………………………………………….. 285 6.1.4.8 IT6108C-800-450 ……………………………………………………………………….. 287 6.1.4.9 IT6126C-800-525 ……………………………………………………………………….. 289 6.1.4.10 IT6144C-800-600 ……………………………………………………………………… 291 6.1.5 1500V…………………………………………………………………………………………………. 293 6.1.5.1 IT6018C-1500-40 ……………………………………………………………………….. 293 6.1.5.2 IT6036C-1500-80 ……………………………………………………………………….. 296 6.1.5.3 IT6054C-1500-120 ……………………………………………………………………… 298 6.1.5.4 IT6072C-1500-160 ……………………………………………………………………… 300 6.1.5.5 IT6090C-1500-200 ……………………………………………………………………… 302 6.1.5.6 IT6108C-1500-240 ……………………………………………………………………… 304 6.1.5.7 IT6126C-1500-280 ……………………………………………………………………… 307 6.1.5.8 IT6144C-1500-320 ……………………………………………………………………… 309 6.1.6 2250V…………………………………………………………………………………………………..311 6.1.6.1 IT6018C-2250-25 …………………………………………………………………………311 6.1.6.2 IT6036C-2250-50 ……………………………………………………………………….. 313 6.1.6.3 IT6054B-2250-75 ……………………………………………………………………….. 315 6.1.6.4 IT6072C-2250-100 ……………………………………………………………………… 318 6.1.6.5 IT6090C-2250-125 ……………………………………………………………………… 320 6.1.6.6 IT6108C-2250-150 ……………………………………………………………………… 322 6.1.6.7 IT6126C-2250-175 ……………………………………………………………………… 324 6.1.6.8 IT6144C-2250-200 ……………………………………………………………………… 326 6.7 Supplemental Characteristics…………………………………………………………………… 329 7 Routine Maintenance ……………………………………………………………………………………….. 330 7.1 Instrument Self-Test ………………………………………………………………………………… 330 7.2 Cleaning and Maintenance ………………………………………………………………………. 330 7.3 Contact of ITECH Engineers ……………………………………………………………………. 331 7.4 Return for Repair…………………………………………………………………………………….. 332 A Appendix ………………………………………………………………………………………………………… 334 A.1 Specifications of Red and Black Test Cables ……………………………………………… 334 A.2 Troubleshooting……………………………………………………………………………………… 335 A.3 Fuse Replacement …………………………………………………………………………………. 337

X

1 Quick Reference

Quick Reference

This Chapter will introduce power-on check steps of this series to ensure normal start-up and usage under initialization status of the power. Besides, to facilitate usage, this part also displays the functions of front board, rear board and keyboard keys as well as display functions to a quick view of power appearance, structure and key usage functions before operation.

Brief Introduction Front-Panel Overview Keyboard Introduction Push-on Knob Rear Panel Introduction VFD Indicator Lamps Description Configuration Menu Function System Menu Function Options Introduction

1.1 Brief Introduction
The IT6000C series Bi-directional Programmable DC Power Supply supports a variety of output capabilities to satisfy different test requirement such as high current and low voltage or high voltage and low current. Meanwhile, units of the same model can be run in parallel to deliver stronger output capacity.
In addition to the above powerful and diverse output capability, based on conventional features (such as List function, comprehensive protection and other functions), the IT6000C series Bi-directional Programmable DC Power Supply also supports a variety of unique features, such as digital I/O, data logging, energy regeneration, and the selective upgrade of system files.
More functions, technical indicators and technical innovations are described below:
· The instrument supports bi-directional energy transmission and feeds elec-
tric energy back to the grid in a pollution-free manner, thus cutting electricity and heat dissipation costs and meeting energy-saving and environmental protection demands;
· It supports optional system file upgrade and one-click check of such informa-
tion as system version and system configuration;
· Support List, battery test, comprehensive protection and parallel function.

1

Quick Reference
· During the test, the instrument can record specific data type (such as voltage
value) and save it in the USB memory device;
· The front panel can be inserted with the USB memory device to support
such functions as system file upgrade, import/export of List files and data record;
· Strong Digital I/O Function: In addition to general digital signal I/O functions,
it can also be customized by supporting the wiring through different pins to meet different special needs through different pin wirings;
· Select CC loop priority or CV loop priority. If voltage and current parameters
are to be changed frequently during test, the user can directly set related parameters through [V-set] and [I-set] on the front panel, which is very convenient;
· Built-in voltage curves comply with multiple automotive standards for quick
user recall.
· Built-in maximum power point tracking (MPPT) mechanism to provide solar
photovoltaic curve simulation.
· High visible vacuum fluorescent display (VFD) · Support optical fiber communication, which is applicable for loop control be-
tween units under parallel mode.
· Built-in USB/CAN/LAN communication interface · Optional GPIB/RS232 communication interface · Optional external analog interface, and share an interface position with RS-
232.
· Strong trigger system; · Enable a true seamless switch between positive current and negative cur-
rent while avoiding overshoot current and overshoot voltage;
· When the Sense function is turned on, it can ensure that the DUT is safe in
case of reverse connection or open circuit of the Sense line.
The IT6000C series was designed to allow paralleling of multiple units to create larger power systems. Expandable in master and slave parallel Up to 1152kW. All program is performed from the master unit front panel or remote control interfaces. Consolidated current and power measurements are reported on the master unit. The function and operation of the instrument are the same as that of the single instrument. For detailed specifications, please contact ITECH service.
The models included in the IT6000C series are as follows:

2

Voltage Level
80V 300V 500V

Model
IT6005C-80-150 IT6010C-80-300 IT6015C-80-450 IT6030C-80-900 IT6045C-80-1350 IT6060C-80-1800 IT6075C-80-2040 IT6090C-80-2040 IT6105C-80-2040 IT6120C-80-2040 IT6006C-300-75 IT6012C-300-150 IT6018C-300-225 IT6036C-300-450 IT6054C-300-675 IT6072C-300-900 IT6090C-300-1125 IT6108C-300-1350 IT6126C-300-1575 IT6144C-300-1800 IT6006C-500-40 IT6012C-500-80 IT6018C-500-120 IT6036C-500-240 IT6054C-500-360 IT6072C-500-480 IT6090C-500-600 IT6108C-500-720 IT6126C-500-840 IT6144C-500-960

Current
150A 300A 450A 900A 1350A 1800A 2040A 2040A 2040A 2040A 75A 150A 225A 450A 675A 900A 1125A 1350A 1575A 1800A 40A 80A 120A 240A 360A 480A 600A 720A 840A 960A

Quick Reference Power
5KW 10KW 15KW 30kW 45kW 60kW 75kW 90kW 105kW 120kW 6kW 12kW 18kW 36kW 54kW 72kW 90kW 108kW 126kW 144kW 6KW 12KW 18KW 36kW 54kW 72kW 90kW 108kW 126kW 144kW
3

Voltage Level
800V 1500V 2250V

Model
IT6006C-800-25 IT6012C-800-50 IT6018C-800-75 IT6036C-800-150 IT6054C-800-225 IT6072C-800-300 IT6090C-800-375 IT6108C-800-450 IT6126C-800-525 IT6144C-800-600 IT6018C-1500-40 IT6036C-1500-80 IT6054C-1500-120 IT6072C-1500-160 IT6090C-1500-200 IT6108C-1500-240 IT6126C-1500-280 IT6144C-1500-320 IT6018C-2250-25 IT6036C-2250-50 IT6054C-2250-75 IT6072C-2250-100 IT6090C-2250-125 IT6108C-2250-150 IT6126C-2250-175 IT6144C-2250-200

Current
25A 50A 75A 150A 225A 300A 375A 450A 525A 600A 40A 80A 120A 160A 200A 240A 280A 320A 25A 50A 75A 100A 125A 150A 175A 200A

Quick Reference
Power
6KW 12KW 18KW 36kW 54kW 72kW 90kW 108kW 126kW 144kW 18KW 36kW 54kW 72kW 90kW 108kW 126kW 144kW 18KW 36kW 54kW 72kW 90kW 108kW 126kW 144kW

4

Quick Reference
Naming rules for each series of model are as follows: IT 6XXXC-YYY-ZZZ, wherein, XXX means rated power; YYY means rated voltage; and ZZZ means rated current. As a bidirectional power supply, this series can output and absorb electric energy. The current and power input capacity is same as the output capacity. For example, the maximum rated value of the output power of the IT6018C500-90 model is 18,000W, and the maximum rated value of input power is also 18,000W.
1.2 Front-Panel Overview
For the IT6000C series Bi-directional Programmable DC Power Supply, all front panels of the 3U model are the same, and the operation panels of other models are the same as those of the 3U model. The following is the front panel schematic of the 3U model.
3U Model

1 Power On/Off switch 2 Vacuum fluorescent display (VFD) 3 Function and composite keys 4 Numeric and composite keys

5 Up, down, left, and right cursor navigation keys and Enter key 6 Push-on knob 7 Vent hole 8 USB storage device connection port

1.3 Keyboard Introduction

The keyboard introduction of IT6000C series Bi-directional Programmable DC Power Supply is shown as follows.

5

Quick Reference

Keys [On/Off] [V-set]

Description
Turn the power supply output on or off. When lit, indicates that the output is enabled or on.
Set the output voltage value

[I-set]

In CV priority (default) mode, press [V-set], the interface displays “Vs=0.00V” (Setting value of voltage). In CC priority mode, press [V-set], the interface displays “Vh= 0.00V” (Upper limit of voltage), and press [V-set] again, the interface displays “Vl=0.00V” (Lower limit of voltage).
Set the output current value

[P-set]

In CV priority (default) mode, press [I-set], the interface displays “I+=0.00A” (Upper limit of current) , and press [I-set] again, the interface displays “I-= 0.00 A” (Lower limit of current). In CC priority mode, press [I-set], the interface displays “Is=0.00A” (Setting value of current).
Set the output power value

[Recall] [Shift] [Esc]

Press [P-set], the interface displays “P+=0.00W” (Upper limit of power) , and press [P-set] again, the interface displays “P- = 0.00W” (Lower limit of power) .
Returns the instrument to the specified setup.
Composite key, combined with other keys to realize functions marked above keys.
Press this key to exit the current operation interface.

6

Keys
[0]-[9] +/
.
Left / Right navigation keys
Up / Down navigation keys
[Enter]

Quick Reference Description Numeric keys Positive and negative signs Decimal point The left and right navigation keys are used to adjust the cursor to the specified position or scrolls pages to view menu items. The up and down navigation keys are used to scroll page up and down to view menu items.
Operation confirmation key

Composite key [Shift], combined with other keys to realize functions marked above keys. The detailed functions are listed as follows.

The [Shift]+XXX combination key form identified in this document refers to pressing [Shift] button first, then press the [XXX] button, please pay attention to the sequence.

Keys
[Shift]+[On/Off] (Trigger)
[Shift]+[V-set] (Config)
[Shift]+[I-set] (Function)
[Shift]+[P-set] (System)
[Shift]+[Recall] (Protect)
[Shift]+[1] (Log)
[Shift]+[2] (Lock)

Description Generate a local trigger signal. Enter to Configuration menu. Enter the Function menu. Enter the System menu. Enter the Protect menu of the power supply Enter the data logging function menu. Turn the keyboard lock on or off.

7

Quick Reference

Keys

Description

[Shift]+[3] (Local) Switch remote control mode to local control mode. [Shift]+[+/] (Save)

Save the common parameter settings.

1.4 Push-on Knob
The IT6000C series Bi-directional Programmable DC Power Supply provides a knob on the front panel as shown in the next figure.

The functions of the posh-on knob is described as follows.
· Adjust the value setting · Select menu item · Confirm the set value or the selected menu item
Adjust the Value Setting
In the value setting interface, rotate the knob clockwise to increase the set value and anticlockwise to decrease the set value.
Select Menu Item
The knob can also be used to view menu items. In the menu item display interface, turning the knob clockwise indicates that the next menu item is selected, and turning the knob anticlockwise indicates that the previous menu item is selected.
Confirm settings
After completing the value setting or selecting a menu item, pushing the knob acts like pressing [Enter] key to confirm the operation.

8

1.5 Rear Panel Introduction

Quick Reference

The rear panel of the 3U model of the IT6000C series Bi-directional Programmable DC Power Supply (after removing the protective cover) is shown below. The rear panel of the 6U model is the same as the 3U model.
3U Models

1. Sense terminals (Vs+, Vs-) 2. DC output terminals of the power supply 3. Interface for optional accessories IT-E166 and IT-E167 (For details, see 1.9
Options Introduction) 4. Digital I/O interface: P-IO 5. CAN communication interface 6. LAN communication interface 7. External control interface CTRL
This interface is used for the parallel connection between the master (with operation panel) and the slaves (without operation panel). Connect the interface on the rear panel of each unit to be connected in parallel, and the master can offer synchronous control over the power-on/off of the slaves. 8. USB communication interface 9. Communication interface of inner ring optical fiber (F-TX and F-RX)

9

Quick Reference
This interface is used for the parallel connection between the master (with operation panel) and the slaves (without operation panel) for realizing communication of units in parallel. 10. Communication interface of outer ring optical fiber (TX and RX)
This interface is used for the parallel connection between the masters (with operation panel) for the communication of units in parallel. 11. AC power input terminals (L1, L2, L3, and PE) 12. Chassis ground terminal The 15U and 27U cabinets have the same rear panel terminals except for the cabinet size. The following takes a 15U cabinet as an example.

1. Sense terminals (Vs+, Vs-) 2. Interface for optional accessories IT-E166 and IT-E167 (For details, see 1.9
Options Introduction) 3. Digital I/O interface: P-IO 4. CAN communication interface 5. LAN communication interface 6. External control interface CTRL 7. USB communication interface 8. Communication interface of outer ring optical fiber (TX and RX)

10

9. DC output terminals of the power supply 10. AC power input terminals (L1, L2, L3, and PE) 11. Cabinet earthing rod

Quick Reference

1.6 VFD Indicator Lamps Description

The IT6000C series Bi-directional Programmable DC Power Supply VFD indicator lamps description is as follows:

Table 11 VFD Indicator Lamps Description

Flag OFF CV
CC * CR Shift SRQ CW

FDuenscctriiopntion

Flag

The output of the power supply is turned off.

Sense

The power supply is in a state of constant voltage output.

Rear

The power supply is Addr in a state of constant current output.

The keyboard lock Rmt is turned on.

The power supply (Sink) is in constant resistance state.

Error

Using composite Prot function key

Indicates that the Trig internal status request event occurs.

The power supply is in a state of constant power output.

Function Description
Sense function of the power supply is enabled.
Analog function begin to work.
When received command successfully, the flag will display 3 seconds. Indicates that the instrument is working in remote control mode. Error occur
The instrument enters the protection state. The instrument is in a state of waiting for a trigger.
–

11

1.7 Configuration Menu Function

Quick Reference

This section gives an overview of the configuration menu of the IT6000C series power supply.
The procedures to operate the configuration menu are as follows.
1. Press the composite keys [Shift]+[V-set] (Config) on the front panel to enter the configuration menu.
The VFD shows configuration menu items and each menu item is marked with a number. The user can use up and down keys or knob to scroll pages to view the other menu items.
2. Press [Enter] to select the desired menu item.
Enter the parameter setting interface of this menu item.
3. After finishing the menu setting, press [Enter] key to save the setting.

Press [Esc] key to return to the previous menu level.
The descriptions of configuration menu of the power supply are listed in the table below.

Config

Configuration menu of the power supply

Mode

CC/CV priority mode setting

CV

Constant voltage loop priority mode

Speed= High/Low

Loop response speed setting: high speed / low speed

CC

Constant current loop priority mode

Speed= High/Low

Loop response speed setting: high speed / low speed

V-Rise Time/I-Rise Time = 0.100s

Displays the voltage or current rise time setting according to the selected priority mode. If CC priority mode is selected, the parameter setting of I-Rise Time will be displayed here.

12

Quick Reference

V-Fall Time/I-Fall Time = 0.100s

Displays the voltage or current fall time setting according to the selected priority mode. If CC priority mode is selected, the parameter setting of I-Fall Time will be displayed here.

Output Res

Set the internal resistance of the power supply. This parameter needs to be set only when Mode is set to CV.

Sink Res

Set the CR function in sink mode. This parameter needs to be set only when Mode is selected as CC.
· OFF: Turn off the CR function.
· ON: Turn on the CR function and set
Sink Res. Setting range: 0~7500. Set Sink Res=0, which means to turn off the CR function.

On Delay

Set the delay time to turn on the output.

Off Delay

Set the delay time to turn off the output.

Voltage Max

Set the upper limit of the voltage (default is the rated voltage of the instrument). Once the voltage upper limit is modified here, the parameters related to the voltage setting will be limited by the upper limit here.

1.8 System Menu Function

This Chapter offers a general introduction of system menus, allowing users to have a preliminary understanding of system functions of this IT6000C series.
The steps of the system menu function are as follows:
1. Press the composite keys [Shift]+[P-set] (System) on the front panel to enter the system menu.
At this point, the VFD screen displays the system menu items. Each menu item has a numbering identifier. The user can press Up and Down buttons or use the knob for scrolling display of other menu items.
2. Press [Enter] on a menu interface to enter the setting interface.

13

Quick Reference
3. After the menu items are set, press [Enter] again to save the modified contents.

You can press [Esc] to return to the previous menu. The description of the menu items is shown in the table below.

Beep

Set the beeper state.

On

Turn the beeper on.

Off

Turn the beeper off.

PowerOn

Set the power-on state.

Reset

When the instrument is powered on, the instrument will initialize some settings and [On/Off] state.

When the instrument is powered on, the instrument will re-

Last

main the same settings and [On/Off] state as last time

you turned off the instrument.

Last+Off

When the instrument is powered on, the instrument will remain the same settings as last time you turned off the instrument, but the [On/Off] is OFF state.

Sense

Set the sense function state.

Off

Turn the sense function off.

On

Turn the sense function on.

ListTrig Source Set the trigger method for the List files running.

Immediate Trigger immediately

Manual Manual trigger

Bus

Bus trigger

External External trigger

DLogTrig Source Set the trigger method for the data logging.

Immediate Trigger immediately

Manual Manual trigger

Bus

Bus trigger

Voltage Voltage trigger

Current Current trigger

External External trigger

I/O

Set the communication information between instrument and PC.

USB

USB communication interface

TMC

USB-TMC protocol

14

Quick Reference

VCP

Virtual serial port

Display as the following format: baud rate_data bit_parity bit_stop bit.
· Select the baud rate from the following
options: 4800, 9600, 19200, 38400, 57600, 115200

· Select the data bit from the following op-
tions: 5, 6, 7, 8

· Select the parity bit from the following
options: N, O, E

· Select the stop bit from the following op-
tions: 1, 2

Virtual LAN communication. After selecting

this option, you also need to set the commu-

LAN

nication parameters of the LAN, and the

menu items are the same as those in the

LAN menu (see below).

LAN

LAN communication interface

Info

View the LAN information.

LAN Status: Down IP Mode: Auto IP: 0.0.0.0 Mask: 0.0.0.0 Gateway: 0.0.0.0 DNS1: 0.0.0.0 DNS2: 0.0.0.0 MAC: 8C:C8:F4:40:01:E1 MDNS Status: HostName: HostDesc: Domain: TCPIP:INSTR Socket Port: 30000

IP-Conf

Configure LAN IP information.

IP-Mode Configure LAN IP mode.

Auto: automatically configure the address of the instrument.

Manual: manually configure the address of the instrument.
· IP: 0.0.0.0
Set the IP address.

· Mask: 0.0.0.0
Set the subnet mask.

· Gateway: 0.0.0.0
Set the gateway address.

15

Restore Reset

Quick Reference
· DNS1: 0.0.0.0
Set the preferred address of the DNS server. If it is not involved, there is no need to set it.
· DNS2: 0.0.0.0
Set the DNS server alternate address. If it is not involved, there is no need to set it.
· Socket Port: 30000
Set the port number.
Serv-Conf Configure the LAN services.
MDNS: MDNS service state.
· On
· Off
PING: PING service state.
· On
· Off
Telnet-scpi: telnet-scpi service state.
· On
· Off
Web: Web service state.
· On
· Off
VX-11: VX-11 service state.
· On
· Off
Raw-socket: Raw-socket service state.
· On
· Off
Select whether to reset the LAN to the default settings or not.
· NO
· YES
Select whether to confirm the LAN setting or not.
· NO

16

Quick Reference

CAN

· YES
CAN communication interface.

Baudrate

Select the baud rate from the following options: 5k/10k/20k/40k/50k/80k/100k/125k/ 200k/250k/400k/500k/600k/800k/1000k.

Address

Set the instrument address to a number from 0 to 127.

Protocol

· Canfestival: Use standard can protocol. · BMS: Use the protocol for docking with
the BMS system.

RS232

Select RS-232 communication interface.

Display RS232 or GPIB according to optional interface. In addition, RS232 interface and the analog interface share an interface position.

GPIB

Baudrate

Baud rate: 4800/9600/19200/38400/57600/ 115200

Databit

Data bit: 5/6/7/8

Parity

Parity bit: N (No parity) / E (Even parity) / O (Odd parity)

Stopbit

Stop bit: 1/2

Select GPIB communication interface.

Address Set the communication address (1 to 30).

Parallel

Set the instruments to parallel operation mode.

Single

Set the instrument to single mode, i.e., disable the parallel operation mode.

Master

Set the instrument to master mode.

Total Unit Number of parallel instruments.

Slave

Set the instrument to slave mode.

Digital Port

Set Digital I/O By default, the menu item displays 7 options. You can set parameters for each option respectively. After setting, the corresponding change to each option becomes valid immediately. When re-entering DigPort, the interface can display the changed option. For detailed introduction of menus and functions, see 5.11 Digital I/O Function (Digital Port).

IO-1. Ps-Clear, NotInvert

Function setting of pin 1

IO-2. Ps, Not-Invert

Function setting of pin 2

IO-3. Off-Status, NotInvert

Function setting of pin 3

IO-4. Ext-Trig, NotInvert

Function setting of pin 4

IO-5. INH-Living, NotInvert

Function setting of pin 5

17

Ext-Program System Reset System Rzero System Info

Quick Reference

IO-6. Sync-On, NotInvert

Function setting of pin 6

IO-7. Sync-Off, NotInvert

Function setting of pin 7

External Analog Function. This function is optional. The menu can only display when corresponding board card is inserted. For details, see 5.12 Analogue Function (Ext-Program) (Optional).

Select whether to restore the factory default settings or not.

Used to control whether the voltage is quickly zeroed after the output is turned off.
· Off: No
· On: Yes
View the system information. For details, see 5.14 View the System Information (System Info).

1.9 Options Introduction
The IT6000C series Bi-directional Programmable DC Power Supply supports the following types of optional accessories (sold separately), the details are as below:
· Optional interface card
IT-E166: Interface card for GPIB communication. When users need to use GPIB communication, they can choose to purchase this accessory.
For details, see 2.6.4 GPIB Interface (Optional). IT-E167: Interface card that includes RS-232 communication interface,
external analog and other functions.
The accessory has a total of 10 pins, and the details of each pin are as follows:

18

Quick Reference

Pins Description

1

RS-232 TXD pin for transmitting data.

2

RS-232 RXD pin for receiving data.

3

RS-232 DGND pin for grounding.

4

Ground terminal, that is, the negative terminal of pin 5 to pin

5

Voltage monitoring terminal. It can output a voltage of 0 to

10V to monitor the output voltage from 0 to full scale.

6

Current monitoring terminal.

It can output a voltage of 10V to 10V to monitor the output

current from negative full scale to positive full scale.

7

Reference voltage (10V) test terminal. The accuracy is

0.03%. You can use a multimeter to measure this pin. When

the output voltage of the pin is in the range of 10±0.03%*10, it

indicates that the accessory is functioning normally. Other-

wise, the function is abnormal and cannot be used.

8 / 9 / Terminals for external analog function. For details, see 5.12

10

Analogue Function (Ext-Program) (Optional).

The analog pin has a bandwidth of 10kHz and an input accuracy of 0.5% FS. The FS refers to -10V to +10V, i. e., FS = 20V.
· Fiber optic modules and cables
Fiber optic modules and cables are used for data transmission and communication between parallel units, and are highly resistant to interference. The fiber optic module and cable are the necessary accessories for the parallel connection. Different numbers of fiber optic modules and cables are used in different numbers of parallels.

19

Quick Reference
IT-E168: Used for parallel connection between the units in a cabinet, including one fiber module and two fiber cables, with lengths of 1.5 meters and 0.3 meters.
IT-E169: Used for parallel connection between cabinets, including one fiber module and one 2.5m fiber cable.
· IT-E165A: Anti-reverse connection module
It is suitable for battery products. This module can be selected to avoid reverse connection during battery wiring.
· IT-E165B: Anti electromotive force module
It is suitable for motor products, which can prevent the electromotive force generated during the operation of the motor from damaging the power supply products.

20

Inspection and Installation
2 Inspection and Installation
Unpacking and Transportation Verifying the Shipment Instrument Size Introduction Connecting the Power Cord Connecting the Device Under Test (DUT) Remote Interface Connection

2.1 Unpacking and Transportation

Unpacking

For cabinet products, they are packaged in wooden boxes at the factory. After you receive them, please refer to the unpacking instructions provided with the box for disassembly; for products packaged in cartons, please use appropriate tools for unpacking.
It is recommended to keep the complete transport packaging for the lifetime of the device for relocation or return to the manufacture for repair.

Transportation
If you need to transport non-cabinet products, you must pay attention to the following to ensure the safety of equipment and personnel.

21

Inspection and Installation
· Before moving, make sure that the cabinet or stand where the
equipment will be placed has been fixed and meets the load-bearing conditions to avoid tilting and collapsing, causing personnel to be injured, and equipment broken.
· Due to the weight of the product, transport by hand should be
avoided where possible. If unavoidable, carry it with two people and holding the product shell and not external parts (such as handles, electrodes, knobs, etc.).
· When carrying, be prepared to bear the weight to avoid sprains or
being crushed by heavy objects.
· Use suitable safety clothing, especially safety shoes, when carrying
the equipment, as due to its weight a fall can have serious consequences.
After unpacking the cabinet product, if you need to move it to other places, you must pay attention to the following matters to ensure the safety of equipment and personnel.

22

Inspection and Installation
· The cabinet product is very heavy. Before moving to another loca-
tion, confirm whether the ground load is in compliance.
· During the process of moving the cabinet, it is recommended that
two or more people cooperate and push it slowly and at a constant speed. If you encounter a pit, you need to pay special attention. It is forbidden to push it quickly, otherwise it will easily cause excessive inertia and cause the casters at the bottom of the cabinet to jam and the cabinet to fall.
· It is not advisable to push down the slope to prevent the cabinet
from falling down due to the shift of the center of gravity. It is recommended to use a forklift or crane to move the cabinet.
· ITECH 27U and 37U cabinets are equipped with hoisting rings as
standard on the top. It is recommended to use a crane equipped with a four-leg hoisting belt structure for horizontal hoisting and moving, and ensure that the four hoisting belts are the same length to avoid cabinet skew during movement. As shown below.
· After moving to the destination, please lock the four casters to se-
cure the cabinet.
· The cabinet should be placed on a level ground. It is forbidden to
place the cabinet on a sloped ground.

23

2.2 Verifying the Shipment

Inspection and Installation

Unpack the box and check the contents before operating the instrument. If wrong items have been delivered, if items are missing, or if there is a defect with the appearance of the items, contact the dealer from which you purchased the instrument immediately.
The package contents include:

Item

Qty.

Bi-directional Pro-

x1

grammable DC Power

Supply

Power cord

x1

Model IT6000C Series
–

USB communication x1

–

cable

LAN communication x1

–

cable

Calibration Certificate x1

–

Remarks
For the specific models included in this series, refer to 1.1 Brief Introduction.
Depending on the instrument model. For details, see 2.4 Connecting the Power Cord.
This is used when the USB interface is used for starting up remote operation. Cable length is 1.5 meters.
This is used when the LAN interface is used for starting up remote operation. Cable length is 2 meters.
It is the calibration certificate of the instrument before delivery.

Upon verification of the shipment, keep the package and relevant contents thereof in a safe place. When returning the instrument for warranty service or repair, the specified packing requirements shall be met.

24

2.3 Instrument Size Introduction

Inspection and Installation

3U Models

The instrument should be installed at well-ventilated and rational-sized space. Please select appropriate space for installation based on the instrument size.
The detailed dimension drawings of the IT6000C series are as follows (unit: mm, deviation: ±1 mm):

25

6U Models

Inspection and Installation

26

15U Models

Inspection and Installation

27

27U Models

Inspection and Installation

28

37U Models

Inspection and Installation

The 15U, 27U and 37U cabinets only show the size data. The number of instruments installed in the cabinet should be based on the actual model.

2.4 Connecting the Power Cord

Precautions
To prevent electric shock and damage to the instrument, observe the following precautions.

29

Inspection and Installation
· Before connecting power cord, be sure to confirm that the power
voltage matches with the rated input voltage of the instrument.
· Before connecting power cord, be sure to switch off the instrument.
Verify that there is no dangerous voltage on the connection terminals.
· To avoid fire or electric shock, make sure to use the power cord
supplied by ITECH.
· Be sure to connect the power cord to the AC distribution box with
protective grounding. Do not use terminal board without protective grounding.
· Do not use an extended power cord without protective grounding,
otherwise the protection function will fail.
· Be sure to perform related operations and connections to feed en-
ergy back to grid in accordance with related regulations, and meet all necessary conditions.
· Ensure that the power cord connection terminals are either insu-
lated or covered by the supplied protective cover so that no accidental contact with lethal voltage can occur.
Safety agency requirements dictate that there must be a way to physically disconnect the AC mains cable from the unit. A disconnect device, either a switch or circuit breaker must be provided in the final installation. The disconnect device must be close to the equipment, be easily accessible, and be marked as the disconnect device for this equipment.
Categories of Power Cords The standard power cord specifications for this series of 3U instruments are divided into the following types according to different regions:

30

Inspection and Installation

The yellow-green wire is grounding wire, which is connected to the PE terminal of power input on the rear panel; the others are live wires, which are correspondingly connected to the L1, L2 and L3 terminals of power input on the rear panel of the instrument. L1/L2/L3/PE cable is 6mm2.
AC Power Input Level
The input of this series is a three-phase AC power (three-phase + PE). The voltage level and frequency are as follows. (Note: here is the line voltage, such as L1 and L2)
· Voltage 1: 198V to 264V (Derating 50%), frequency: 47Hz to 63Hz · Voltage 2: 342V to 528V, frequency: 47Hz to 63Hz
· When the AC input voltage is in the range of Voltage 1, the power
setting value is derated by 50%, and when the output exceeds the present rating, the instrument enters AC Input Overcurrent protection and the output is turned off. If a full power output is required, the AC input level Voltage 2 must be selected.
· Models without emergency stop module (i.e. AC contactor not in-
cluded), other AC input voltage ranges are required for customization.
· Models without emergency stop module and assembled to the cabi-
net, with AC input voltage in the range of 198~264V, need to be customized while derating by 50%.
· Models with emergency stop module (including AC contactor) only
support 380VAC±10% for standard AC input voltage, 480VAC±10% voltage is required for customization.

The instrument which rated power less than 15kW consumes different current on the three phases. Take the 5kW instrument for example, the rated AC current

31

Inspection and Installation
of each phase for the single unit is L1/L2:17A, L3:0A, and different model of rated AC current is different, the detailed specification refer to the technical specification.
Connecting the Power Cord
Suggestions for phase assignment:
· When connecting the instrument which rated power less than 10kW to AC
distribution box, please take care for balanced current distribution on three phases. For single unit, it requires two or three phases of a three-phase AC distribution box (the rated AC current on L3 is 0, so, it can be connected or not). In case multiple units are connected to the same main AC distribution box. It is recommended to follow the suggestion connection diagram as below.

· When connecting the instrument which rated power with 10kW Power
15kW to AC distribution box, For single unit, it requires three phases of a three-phase AC distribution box. In case multiple units are connected to the same main AC distribution box. It is recommended to follow the suggestion connection diagram as below.

32

Inspection and Installation

· The instrument which rated power great than or equal to 15kW, they already
consume balanced current on all three phases. connecting the power cord
as below.

Operation procedures:
· For 3U model (rated power less than or equal to 18kW), see the steps below
to connect the power cable.

33

Inspection and Installation

1. Confirm that the switch of the AC power distribution box is off.
2. Confirm that the power switch is in the OFF position and verify that there is no dangerous voltage on the connection terminals.
3. Remove the protective cover outside the AC input terminal on the rear panel.
4. Connect one end of the power cable’s round terminal to the AC power input terminal on the instrument’s rear panel.
a. You only need to connect the red/green/yellow (or brown/black/gray) live wires to the terminals on the rear panel, which are not required to correspond to L1, L2 and L3 terminals one by one.
b. The yellow-green wire is grounding wire, which is connected to the protective grounding terminal (PE).
5. Mount the protective cover back to its original position.
6. Refer to the suggestion connection diagram, connect the other end of the power cable to the required AC distribution box.
· The 6U model comes standard with two 3U model power cords, which need
to be connected to the AC distribution box respectively, and the AC input terminals of both need to be connected;
· For models that have been assembled into a cabinet at the factory, users
need to connect one end of the power cord to the cabinet and the other end to the distribution box. Refer to the following steps to connect the power cord;
1. Confirm that the switch of the AC power distribution box is off.
2. Confirm that the power switch is in the OFF position and verify that there is no dangerous voltage on the connection terminals.
3. Remove the panel of the AC input at the back of the cabinet.
4. Pass the power cord through the lead hole of the panel and connect it to the branch terminal in the cabinet (from left to right, L1, L2, L3, PE).
a. The three color line wires of red/green/yellow (or brown/black/gray) correspond to L1, L2, and L3 respectively. Use an internal hexagonal wrench to loosen the screw of the branch terminal, and then tighten it after connecting the AC input cable.
b. The yellow-green wire is grounding wire, which is connected to the protective grounding terminal (PE).
5. Install the panel back in place.
6. Refer to the suggestion connection diagram, connect the other end of the power cable to the required AC distribution box.

34

Inspection and Installation
· For models to be assembled in parallel by the user, see contents related to
power cable connection in IT6000 Cabinet Assembly Instruction.
2.5 Connecting the Device Under Test (DUT)
This section describes how to connect the test cables between the instrument and DUT.
Precautions To prevent electric shock and damage to the instrument, observe the following precautions.

35

Inspection and Installation
· Before connecting test cables, be sure to switch off the instrument.
Power switch is in Off position, otherwise touching the output terminals on the rear panel may result in personal injury or death due to electric shock.
· To avoid electrical shock, before testing, please make sure the rat-
ing values of the testing cables, and do not measure the current that higher than the rating value. All test cables shall be capable of withstanding the maximum short circuit current of the instrument without causing overheat.
· If several loads are provided, each pair of load wires shall safely
withstand the rated short circuit output current of the power supply under full load.
· Do not short the battery when connecting or disconnecting the bat-
tery testing circuit. Short circuit may cause severe accident.
· Because the instrument can be used to sink current, hazardous vol-
tages from an external energy source such as a battery may be present on the output terminals even with the instrument power off. Provision must be made to disconnect the external energy source before touching the output or sense terminals.
· Always use test cables provided by ITECH to connect the equip-
ment. If test cables from other factories are used, please confirm the maximum current that the test cables can withstand.
· During wiring, check that the positive and negative poles of the test
cables are properly and tightly connected. Do not connect the positive pole and disconnect the negative pole.
· It is recommended that for battery testing, a fuse must be con-
nected in series between the power supply and the battery to prevent short circuits caused by any problems.
· When connecting the DUT (including but not limited to battery/ca-
pacitor), it is recommended that you purchase the IT-E165A anti-reverse connection module to prevent the battery/capacitor reverse connection that may cause damage to the instrument; When there is no external auxiliary equipment connected to prevent reverse connection and anti-spark function, please pay attention to the safety of the wiring, and be careful not to reverse the battery/capacitor connection, reverse connection will cause damage to the instrument, even if it is not powered on.
· Ensure that the output terminals are either insulated or covered us-
ing the safety covers provided, so that no accidental contact with lethal voltages can occur.

Electrode introduction

The wiring apertures on the DC electrodes of the 3U model and the cabinet model are both M8.

36

Introduction of electrode protective case

Inspection and Installation

Due to the update of the product, the original standard DC terminal protection cover of the 3U model will be changed to an electrode insulation protection case. The protective case can completely seal the electrode, and the safety is better.

6U models and cabinet models are not involved in this change.
The appearance and detailed size information of the protective case are as follows:

37

Inspection and Installation
The method of use is as follows:
This chapter includes the use of protective cover and protective case. The description in Connecting the DUT mainly focuses on using the protective cover. If it is actually a protective case, please refer to the following introduction. 1. Remove the metal screw on the electrode. 2. Put on the electrode protection case, connect to the terminal of the test lead (such as the European terminal), and fasten the matching screw with an insulating nut.
If desired, a set of washers can be added between the insulating screw and the electrode. The installation is completed as shown in the figure below.

38

Specification for Test Cables

Inspection and Installation

Test cables are not standard accessories for the instrument. Please select optional red and black test cables for individual sales based on the maximum current value. For specifications of test cables and maximum current values, refer to A.1 AppendixSpecifications of Red and Black Test Lines.

Connecting the DUT (Local Measurement)

The instrument supports two kinds of wiring methods with the DUT: local measurement and remote measurement (SENSE). The default test mode is local measurement.
The connection diagram and steps of local measurement are as follows:

1. Confirm that the power switch is in the OFF position and verify that there is no dangerous voltage on the connection terminals.
2. Remove the output terminals cover of the power supply.
3. Loosen the screws of the output terminals and connect the red and black test cables to the output terminals. Re-tighten the screws.
When maximum current that one test cable can withstand fails to meet the rated current, use multiple pieces of red and black test cables. For example, the maximum current is 1,200A, then 4 pieces of 360A red and black cables are required.
4. Thread the red and black test cables through the output terminals cover of the power supply and install the cover.
5. (Optional) According to the actual situation of DUT, connect the grounding terminal on the rear panel of the instrument to the DUT to ensure the safe grounding.
For the location information, see 1.5 Rear Panel Introduction.
6. Connect the other end of the red and black cables to the DUT. The positive and negative poles must be properly connected and fastened when wiring.
Connecting the DUT (Remote Sensing)
Remote measurement is available for the following scenarios:

39

Inspection and Installation
When the DUT consumes large current or the wires are too long, there is a voltage drop on the wires between DUT and output terminals of the power supply. To maximize measurement accuracy, the power supply provides the remote measurement terminals VS+ and VS- on the rear panel, which can be used to measure the terminal voltage of the DUT.
When the power supply is used for battery testing in actual applications, the voltage drop of the wire will lead to voltage inconsistency of both ends and inconsistency of the cutoff voltage of power supply and the actual voltage of battery, resulting in inaccurate measurement.
The connection diagram and steps of remote measurement are as follows:

1. Confirm that the power switch is in the OFF position and verify that there is no dangerous voltage on the connection terminals.
2. Refer to the wiring diagram and connect the Vs+ and Vs- with shielded twisted-pair cables.

To ensure the stability of the system, use shielded twisted-pair cables between the remote sense terminals and the DUT. Pay attention to the positive and negative poles when wiring, otherwise it will damage the instrument.
3. Remove the output terminals cover of the power supply.
4. Loosen the screws of the output terminals and connect the red and black test cables to the output terminals. Re-tighten the screws.
When maximum current that one test cable can withstand fails to meet the rated current, use multiple pieces of red and black test cables. For example, the maximum current is 1,200A, then 4 pieces of 360A red and black cables are required.
5. Thread the red and black test cables through the output terminals cover of the power supply and install the cover.
6. (Optional) According to the actual situation of DUT, connect the grounding terminal on the rear panel of the instrument to the DUT to ensure the safe grounding.
For the location information, see 1.5 Rear Panel Introduction.
7. Connect the other end of the remote sense cables to the DUT.

40

Inspection and Installation 8. Connect the other end of the red and black cables to the DUT. The positive
and negative poles must be properly connected and fastened when wiring. 9. Power on the instrument and turn on the Sense function of the instrument.
For details, see 5.7 Sense Function (Sense).
Never touch cables or connections immediately after turning off the instrument at the end of the test. Lethal voltages may remain at the output terminals after turn-off. Verify that there is no dangerous voltage on the output or sense terminals before touching them.

2.6 Remote Interface Connection
This series power supply comes standard with four communication interfaces: USB, LAN and CAN, and supports two optional communication interfaces: GPIB, RS-232. You can choose one of them to communicate with your computer.

When you use the remote interface to send SCPI instructions, if you use the programming commands that involve modifying the instrument settings, such as modifying the output voltage value, after completing the communication connection between the instrument and the host computer, and after the communication settings are completed, you must execute the SYST:REM command firstly.
2.6.1 USB Interface
The USB interface is located on the rear panel of the instrument. You can connect the instrument to the computer via a cable with a USB interface on both ends (USB A-type connector on one end and USB B-type connector on the other).
The user needs to select the USB interface type in the System menu before using the USB interface. The following types are optional.
· TMC: USB_TMC interface; · VCP: Virtual serial port. For Win7 system, you can download IT6000 VCP
driver from ITECH official website or contact technical support engineer; for Win10 system, you do not need to install VCP driver.
The operation steps to change the USB interface type in System Menu are as follows.

41

Inspection and Installation
1. Press the composite keys [Shift]+[P-set] (System) on the front panel to enter the system menu.
2. Rotate the knob or press the Up/Down key to select I/O and press [Enter]. 3. Rotate the knob or press the Left/Right key to select USB, and press
[Enter]. 4. Rotate the knob or press the Left/Right key to select the communication
method.
If you select VCP, you also need to set the baud rate and other parameters of the virtual serial port, and the baud rate must be the same as the configuration on the computer side.
2.6.2 LAN Interface
When the user connect PC through LAN interface, the following is required to use the LAN interface. The LAN interface complies with the LXI standard.
Connect Interface
Use the following steps to quickly connect your instrument to your LAN and configure it. Two typical LAN interface systems are described below: private LAN and site LAN.
· Connect to the private LAN
A private LAN is a network in which LAN-enabled instruments and computers are directly connected. They are typically small, with no centrallymanaged resources. When connected to a computer, a standard network cable can be used to connect directly to the computer via the LAN interface.
· Connect to the site LAN
A site LAN is a local area network in which LAN-enabled instruments and computers are connected to the network through routers, hubs, and/or switches. They are typically large, centrally-managed networks with services such as DHCP and DNS servers. When connected to a computer, a network cable can be used to connect to the router, and the computer is also connected to the router.

42

Inspection and Installation

· When using one crossover cable to connect PC directly, the gateway address of
the instrument should be consistent with that of the PC, and the IP address should be at the same network segment with the PC’s IP address.
· When the instrument and computer are connected to the router, an independent
IP address must be assigned for the instrument.
View LAN Interface Information
The operation steps to view the LAN interface information in the System Menu are as follows. 1. Press the composite keys [Shift]+[P-set] (System) on the front panel to en-
ter the system menu. 2. Rotate the knob or press the Up/Down key to select I/O and press [Enter]. 3. Press the Left/Right key to select LAN and press [Enter]. 4. Press the Left/Right key to select Info and press [Enter]. 5. Press the Up/Down key or rotate the knob to view the LAN parameters.
Configure LAN Interface Information
The configurable parameters of the IT6000C series power supply are described as follows.
IP-Conf
· IP: This value is the Internet Protocol (IP) address of the instrument. An IP
address is required for all IP and TCP/IP communications with the instrument. An IP Address consists of 4 decimal numbers separated by periods. Each decimal number ranges from 0 through 255 with no leading zeros (for example, 169.254.2.20).
· Mask: This value is used to enable the instrument to determine if a client IP
address is on the same local subnet. The same numbering notation applies as for the IP Address. When a client IP address is on a different subnet, all packets must be sent to the Default Gateway.
· Gateway: This value is the IP Address of the default gateway that allows the
instrument to communicate with systems that are not on the local subnet, as determined by the subnet mask setting. The same numbering notation applies as for the IP Address. A value of 0.0.0.0 indicates that no default gateway is defined.
· DNS1: This field enters the primary address of the server. Contact your LAN
administrator for server details. The same numbering notation applies as for the IP Address. A value of 0.0.0.0 indicates that no default server is defined.

43

Inspection and Installation
DNS is an internet service that translates domain names into IP addresses. It is also needed for the instrument to find and display its hostname assigned by the network. Normally, DHCP discovers the DNS address information; you only need to change this if DHCP is unused or not functional.
· DNS2: This field enters the secondary address of the server. Contact your
LAN administrator for server details. The same numbering notation applies as for the IP Address. A value of 0.0.0.0 indicates that no default server is defined.
· Socket Port: This value indicates the port number corresponding to the
service.
Serv-Conf
Configurable services include: MDNS, PING, Telnet-scpi, Web, VXI-11, and Raw Socket.
How to Configure
· IP-Conf
Take manual configuration as an example. The steps are as follows:
1. Press the composite keys [Shift]+[P-set] (System) on the front panel to enter the system menu.
2. Rotate the knob or press the Up/Down key to select I/O and press [Enter].
3. Press the Left/Right key to select LAN and press [Enter].
4. Press the Left/Right key to select IP-Conf and press [Enter].
5. Press the Left/Right key to select Manual and press [Enter].
6. Set the IP, Mask and the other parameters in turns, and press [Enter].
After the last parameter Socket Port is set, the system will return to the LAN setting interface shown as below: SYSTEM I/O CONF LAN Info IP-Conf Serv-Conf Reset
7. Press the Left/Right key to select Reset to confirm the settings of IPConf.
· Serv-Conf
1. Press the composite keys [Shift]+[P-set] (System) on the front panel to enter the system menu.
2. Rotate the knob or press the Up/Down key to select I/O and press [Enter].

44

Inspection and Installation
3. Press the Left/Right key to select LAN and press [Enter]. 4. Press the Left/Right key to select Serv-Conf and press [Enter]. 5. Rotate the knob to select the service you want to enable and press
[Enter]. 6. Rotate the knob to select whether to enable the service and press
[Enter]. On: Indicates that the service is enabled. Off: Indicates that the service is disabled.
2.6.2.1 Using Web Server
The instrument has a built-in Web server for monitoring and controlling the instrument via a Web browser in PC. To use the Web server, connect the instrument and PC over LAN interface and enter the instrument’s IP address into the address bar at the top of your PC’s Web browser, you can access the front panel control functions including the LAN configuration parameters.
· If you want to remotely control the instrument using the built-in web server, you
must enable the web service. See 2.6.2 LAN Interface for details.
· The format of the address entered in the address bar of the browser is http://
192.168.0.100. The specific IP address is subject to the actual instrument settings. The opened page is displayed as follows:

45

Inspection and Installation
The homepage of different models are different. The actual shown page shall be subject to the connected instrument. You can select different pages by clicking the buttons shown in the navigation bar on the left side of the window. The detailed descriptions are as follows.
· HomeWeb home interface, displays the model and appearance of the
instrument;
· Information: Displays the serial number of the instrument and more system
information as well as LAN configuration parameters;
· Web Control: Enables the Web control to begin controlling the instrument.
This page allows you to monitor and control the instrument;
· LAN Configuration: Reconfigure the LAN parameters; · Manual: Go to the ITECH official website and view or download the relevant
documents.
· Upload: Performs a system upgrade.
Click CONNECT to connect the PC with the instrument, then click Select File to select the system upgrade installation package (for example, itech_6000_P.itech), and then click UPLOAD performs the upgrade operation. After the upgrade is complete, the instrument needs to be restarted.
2.6.2.2 Using Telnet
The Telnet utility (as well as sockets), is another way to communicate with the instrument without using I/O libraries or drivers. In all cases, you must first establish a LAN connection from your computer to the instrument as previously described. In an MS-DOS Command Prompt box, type “telnet hostname” where hostname is the instrument’s hostname or IP address. Press the Enter key and you should get a Telnet session box with a title indicating that you are connected to the instrument and 23 is the instrument’s telnet port. Type the SCPI commands at the prompt.
2.6.2.3 Using Sockets

· Before using this function, you need to configure Socket Port, and
the configuration on the instrument side should be consistent with the configuration on the PC side.
· The instruments allow any combination of up to six simultaneous
socket and telnet connections to be made.

46

Inspection and Installation
ITECH instruments have SCPI socket services, which can be used to send and receive SCPI commands, queries, and query responses. All commands must be terminated with a newline for the message to be parsed. All query responses will also be terminated with a newline.

2.6.3 CAN Interface

The CAN interface is located on the rear panel of the instrument and is connected to the computer using a CAN communication cable.

Definition of CAN Pins The definition of CAN pins are as follows.

Pins H L

Description CAN_H CAN_L

CAN Configuration
The user needs to configure the CAN interface parameters in the system menu before using the remote control. The CAN interface parameters are as follows.

Name Address Baud rate
Protocol

Description
Range: 0 127
Select the baud rate from the following options: 5k/10k/20k/ 40k/50k/80k/100k/125k/200k/250k/400k/500k/600k/800k/ 1000k
· DeviceNet: Use standard can protocol. · BMS: Use the protocol for docking with the BMS
system.

The operation steps are as follows.
1. Press the composite keys [Shift]+[P-set] (System) on the front panel to enter the system menu.
2. Rotate the knob or press the Up/Down key to select I/O and press [Enter]. 3. Press the Left/Right key to select CAN and press [Enter].

47

Inspection and Installation 4. Set the baud rate, address and other parameters, press [Enter].
CAN Troubleshooting If you meet some problems when communicating with PC by CAN interface, please check the following items:
· PC and the instrument must have the same baud rate. · Ensure you have used the correct communication cable (CAN_H, CAN_L).
Please pay attention that some cable may not have a correct internal wiring even it is with an appropriate plug.
· The interface cable is correctly connected (CAN_H to CAN_H, CAN_L to
CAN_L).
· If the communication signal is poor or unstable, it is recommended to con-
nect a 120 terminating resistance. The connection diagram of a single device is as below.
The connection diagram of multiple devices is as below.

When multiple devices are connected, it is recommended to connect the pin 8 (GND) of the P-IO terminal on the rear panel of these devices in parallel, and the communication quality will be improved in the entire CAN network.
2.6.4 GPIB Interface (Optional)
The GPIB (IEEE-488) interface is assembled in the IT-E166 communication board. Use a GPIB cable to connect GPIB interfaces of the instrument and PC. Please ensure that the screws have been screwed down in order to have a full connection.

48

GPIB Configuration

Inspection and Installation

Each device on the GPIB (IEEE-488) interface must have a unique whole number address between 1 and 30. Your computer’s GPIB interface card address must not conflict with any instrument on the interface bus. This setting is nonvolatile; it will not be changed by *RST.
When you purchase the interface accessory and successfully insert it into the corresponding position on the rear panel of the instrument, the menu item for changing the GPIB address appears in the System menu. The specific steps are as follows:
1. Ensure that the instrument’s power switch is off, that is, the instrument is in Power Off state.
2. Insert the separately purchased GPIB interface card into the card slot on the rear panel of the instrument.
3. Connect the instrument with the computer via the GPIB cable. After the connection is successful, turn on the power switch of the instrument.
4. Press the composite keys [Shift]+[P-set] (System) on the front panel to enter the system menu.
5. Rotate the knob or press the Up/Down key to select I/O and press [Enter]. 6. Press the Left/Right key to select GPIB and press [Enter]. 7. Press the numeric keys to set the GPIB address and press [Enter].

2.6.5 RS232 Interface (Optional)
The RS-232 interface shares the same communication card (IT-E167) with the analog function.
Definition of RS-232 Pins The definition of RS-232 pins are as follows.

When using the RS-232 interface for communication, connect the pin 1, pin 2, and pin 3 of the IT-E167 to the PC. The pin description is as follows:

49

Pins 1 2 3

Inspection and Installation Description TXD, transmit data RXD, receive data DGND, ground

RS232 Configuration

When you purchase the interface accessory and successfully insert it into the corresponding position on the rear panel of the instrument, the RS232 menu item will appear in the System menu. The specific steps are as follows:
1. Ensure that the instrument’s power switch is off, that is, the instrument is in Power Off state.
2. Insert the separately purchased RS232 interface card into the card slot on the rear panel of the instrument.
3. Connect the instrument to the computer via an RS232 cable. After the connection is successful, turn on the power switch of the instrument.
4. Press the composite keys [Shift]+[P-set] (System) on the front panel to enter the system menu.
5. Rotate the knob or press the Up/Down key to select I/O and press [Enter].
6. Press the Left/Right key to select RS232 and press [Enter].
7. Set the relevant communication parameters in turn, and press [Enter].
The RS232 interface parameters are as follows.

Name Baud rate
Data Bit Parity bit
Stop bit

Description
Select the baud rate from the following options: 4800/9600/ 19200/38400/57600/115200 The options are: 5/6/7/8
The options are: N (no parity), O (odd parity), E (even parity).
The options are: 1/2

RS-232 Troubleshooting

If you meet some problems when communicating with PC by RS-232 interface, please check the following items:

50

Inspection and Installation
· Check that whether the baud rate of the computer and instrument are the
same;
· Make sure the correct cable and adapter are connected. Note that internal
wiring may not be correct even if the cable has a suitable plug;
· The cable must be connected to the correct serial ports (COM1, COM2, etc)
of PC.

51

3 Getting Started

Getting Started

Power-on Self-Test Set Output Value Use the Front Panel Menu. On/Off Control

3.1 Power-on Self-Test
Before operation, please confirm that you have fully understood the safety instructions.
When you turn the POWER switch on for the first time after purchase, the instrument starts with its factory default settings. Each time thereafter, the instrument starts according to the setting that you selected as outlined in 5.6 Set the Power-on State (PowerOn).

52

Precautions

Getting Started

· Before connecting power cord, be sure to confirm that the power
voltage matches with the supply voltage.
· Before connecting power cord, be sure to switch off the instrument.
Verify that there is no dangerous voltage on the terminals before touching them.
· To avoid fire or electric shock, make sure to use the power cord
supplied by ITECH.
· Be sure to connect the main power socket to the power outlet with
protective grounding. Do not use terminal board without protective grounding.
· Do not use an extended power cord without protective grounding,
otherwise the protection function will fail.
· Be sure to perform related operations and connections to feed en-
ergy back to grid in accordance with related regulations, and meet all necessary conditions.
· Ensure that the input electrodes are either insulated or covered us-
ing the safety covers provided, so that no accidental contact with lethal voltages can occur.
· If you notice strange sounds, unusual odors, fire, or smoke around
or from inside the instrument, flip the POWER switch to the (O) side to turn the instrument off, or remove the power cord plug from the outlet. The detachable power cord may be used as an emergency disconnecting device. Removing the power cord will disconnect AC input power to the unit.

Power Switch Introduction User can adjust the power switch directly to turn on or turn off the instrument. The status of Power switch is as follows.

On

Off

On

Off 53

Getting Started
If the instrument is the cabinet type, the rear panel of the cabinet provides a master power switch. The relationships between the device status and switch status are listed in the following table.

Master switch status
On On Off Off

Desperate switch status On Off On Off

Device status
On Off Off Off

Turning the POWER Switch On / Off
· Turning the POWER Switch On
Check that the power cord is connected properly. Flip the POWER switch to the ( | ) side to turn the instrument on. The front panel display will light up after a few seconds. It may take about 30 seconds or so for the power supply to initialize before it is ready for use.
· Turning the POWER Switch Off
Flip the POWER switch to the ( O ) side to turn the instrument off. After you turn the POWER switch off, wait at least 10 seconds after the fan stops before you turn the POWER switch back on. Turning the instrument on too soon after you turn it off can cause damage to the inrush current limiter circuit, as well as reduce the life of components such as the POWER switch and the internal input fuses.
Self-Test Procedures
A successful self-test indicates that the purchased product meets delivery standards and it is available for normal usage. Normal self-test procedures:
1. Correctly connect the power cord and power on the instrument.
The instrument starts the self-test.
2. After the instrument is self-tested normally, the VFD shows the output voltage, current, power and other information (CV mode).
If an error occurs during the self-test, an error message is displayed. The following table lists the error messages you might see.

54

Error message Eeprom Failure Main FrameInitializeLost Calibration Data Lost
Config Data Lost
NETWORKING…
FIBER MULTI MASTER FIBER EXT UNLOCK
FIBER INNER UNLOCK

Getting Started
Error Description
The EEPROM is damaged.
The system setting data is lost.
The factory calibration data in EEPROM is lost. The latest operation state of the instrument is lost. The parallel operations are abnormal and cannot finish the networking.
Multi-master conflict The outer ring of the fiber is not locked. The inner ring of the fiber is not locked.

Exception Handling
If the instrument cannot start normally, please check and take measures by reference to steps below.
1. In order to facilitate the transportation and protection of the fiber optic cable, the fiber optic cable required for communication between the two single units (one master and one slave) of the 6U model is removed at the factory and packaged separately as an accessory. Before you turn on the power of the device, you need to connect the fiber cable as shown in the figure below, and then perform the power-on operation.

2. Check whether the power cord is correctly connected and confirm whether the instrument is powered.
3. Check whether the power in On. The power switch is under “|” On status.

55

Getting Started
4. Check whether the power voltage matches with the supply voltage. Please refer to 2.4 Connecting the Power Cord to select proper AC input.
5. After multiple units are connected in parallel and powered on, the error related to the fiber-optic is indicated. Please refer to the following steps for troubleshooting.
· FIBER MULTI MASTER: Multiple units (with panel) are connected in par-
allel, please confirm whether multiple Masters are set. Select SystemParallel menu to reset. There can only be one single unit as the Master, and the other single units must be set to Slave. After the setting is completed, power off and restart each single unit.
· FIBER EXT UNLOCK: Multiple units (with panel) are connected in paral-
lel, check whether the cable connection of the fiber outer ring (TX and RX) is closed. Then confirm that whether the SystemParallel menu is set. There can only be one single unit as the Master, and the other single units must be set to Slave. After the setting is completed, power off and restart each single unit.
· FIBER INNER UNLOCK: Only one master unit (with panel) and the rest
is slave unit (without panel) connected in parallel, firstly, confirm whether the cable connection of the fiber inner ring (F-TX and F-RX) is closed. Then confirm that whether the SystemParallel menu is set. If yes, please restore the setting to Single mode, then power off and restart. Then consult ITECH technical support engineers for the parallel setting method in this case.
6. If the instrument still does not start, contact ITECH technical support engineer.

3.2 Set Output Value

The voltage value, current value, power value can all be programmed. The user can set different output parameters within the range of specifications according to the need to satisfy a range of test requirement.
After selecting the operation mode, the interface displays the setting value under the selected operation mode and the cursor blinks to prompt. The user can use the following methods to set the values.
· Directly use the number keys to set the value. · Rotate the knob to set the data in the cursor position. Rotate the knob clock-
wise to increase the set value and anticlockwise to decrease the set value. Once the data in the cursor position increases to ten, the value will add one

56

Getting Started
to the front position automatically. and once the data in the cursor position decreases to zero, the value will minus one from the front position automatically. This provides convenience for the user to set. The knob can works with the left or right keys. Use the left or right keys to move the cursor position.
After entering the menu interface, the knob can also be used to scroll pages to view menu items.
3.3 Use the Front Panel Menu.
The front panel provides multiple menu keys and the user can access the instrument menu by using the front panel keys, including Config menu, System menu, Protect menu and Function menu. And the user can change the related system setting in the menu. Each menu is briefly described as follows.
· The user can set the parameters related to electrical properties in the
Config menu, including the current operation mode, slope, output delay time, internal resistance.
· The user can set the function related to instrument system in the System
menu, including the key beeper, Sense function, power-on state, trigger source, communication method, data logger method, digital I/O function setting, parallel function, system information and so on.
· The user can set the parameters related to instrument protection function in
the Protect menu, including OCP /OVP/OPP /UCP/UVP.
· Function menu includes output list, batterycharging test function and so on.
The user press the complex keys to enter into the menu interface. The menu is divided according to the function item and the corresponding operation is set in the lowest level menu item. For example, the key beeper is set in SystemBeep. Set the Beep item to off or on. Please refer to 1.7 Configuration Menu Function, 1.8 System Menu Function and the corresponding chapters for detailed menu description.
After entering the menu interface, the screen displays the optional menu. Rotate the knob or press left or right keys to view the menu items. When the number in front of the menu item is blinking, indicates this item is selected currently. Press [Enter] key to enter the selected menu item and press [Esc] to exit the menu.

57

3.4 On/Off Control

Getting Started

· The [On/Off] key is used to turn the output/input on or off under
normal circumstances. Even if the instrument is in control by PC or the keyboard is locked, the [On/Off] is still valid.
· The [On/Off] key light is off and turning the output off does not
place the instrument in a safe state. Hazardous voltages may be present on all output and guard terminals. Putting the equipment into an output-off state does not guarantee that the outputs are powered off if a hardware or software fault occurs. See the cautions about connecting the test lines before connecting test lines.

Controlled by the [On/Off] key
You can press the [On/Off] key on the front panel to control the output status of the power supply. If the [On/Off] key light is on, indicates that the output is turned on. If the [On/Off] key light is off, indicates that the output is turned off. When the output of the power supply is on, the operating status flag (CV/CC/ CW) on the VFD will be illuminated.

It is recommended that you turn on the [On/Off] after the power supply is connected to the DUT. If the power supply has no output after the output is turned on, check the voltage and current setting value, set the voltage and current to a non-zero value, and then turn on the output.
Controlled by remote command
When communicating remotely, the [On/Off] switch of the power supply or load can be controlled by using the corresponding SCPI command, as detailed in the programming guide. For example, for IT6000C series, use OUTP 1 to turn on the power output; for IT8000 series, use INP 1 to turn on the load input.
Controlled by Digital IO pins
The Digital IO pin, which comes standard with this series of instruments, supports external level/pulse signal control output, and in combination with external circuitry, enables DC emergency stop control of the output. Refer to the following use case.
Case:

58

Getting Started
Pin 5 of Digital IO, with the function of INTERLOCK, can disable the output of DC side by inputting low level (0V) to pin 5 in the default Not-Invert, INH- Living setting, at which time the [On/Off] key light is on and there is no actual output. Restoring a high level (5V) on pin 5 restores the output on the DC side.
1. Go to the SystemDigital PortIO5. INH-Living Not-Invert menu. 2. Select the Not-Invert and INH-Living items, and press [Enter] to confirm. 3. Connect Pin5 (positive) and Pin8 (negative) of Digital IO to the external sig-
nal control circuit.
At this time, 5V is output between Pin5 and Pin8. 4. After connecting the DUT, turn on [On/Off]. 5. Input 0V to Pin5 (positive) and Pin8 (negative), or directly short Pin5 and
Pin8.
At this point, output is disabled. 6. Input 5V to Pin5 (positive) and Pin8 (negative), or disconnect the short wire
between Pin5 and Pin8.
At this point, output is restored.

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4 Power Supply Function

Power Supply Function

This chapter describes the functions and features of the power supply. Divided into the following sections:

Set the Output Voltage Set the Output Current Set the Output Power Config Menu for Power Supply Protection Function for Power Supply Function Menu for Power Supply

4.1 Set the Output Voltage
In CV priority (default) mode, press [V-set], the interface displays “Vs=0.00V” (Setting value of voltage). In CC priority mode, press [V-set], the interface displays “Vh=0.00V” (Upper limit of voltage), and press [V-set] again, the interface displays “Vl=0.00V” (Lower limit of voltage).
The voltage setting range is from 0V to the maximum rated output voltage. When [V-set] key is pressed, the key light is lit and the output voltage value can be set. Press numeric keys or rotate the knob to adjust the value in the voltage setting area indicated by the cursor. This value takes effect when you press [Enter].

4.2 Set the Output Current
In CV priority (default) mode, press [I-set], the interface displays “I+=0.00A” (Upper limit of current) , and press [I-set] again, the interface displays “I-= 0.00 A” (Lower limit of current). In CC priority mode, press [I-set], the interface displays “Is=0.00A” (Setting value of current).
The range of current settings is between the data ranges defined in the specifications. When [I-set] key is pressed, the key light is lit and the output current value can be set. Press numeric keys or rotate the knob to adjust the value in the current setting area indicated by the cursor. This value takes effect when you press [Enter].

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Power Supply Function
For the bi-directional power supply, you can set the direction of the current (output / input), that is, control the positive or negative current value by pressing the [+/-] key.
4.3 Set the Output Power
Press [P-set], the interface displays “P+=0.00W” (Upper limit of power) , and press [P-set] again, the interface displays “P- = 0.00W” (Lower limit of power) . The range of power settings is between the data ranges defined in the specifications. When [P-set] key is pressed, the key light is lit and the output power value can be set. Press numeric keys or rotate the knob to adjust the value in the power setting area indicated by the cursor. This value takes effect when you press [Enter].
For the bi-directional power supply, you can set the direction of the power (output / input), that is, control the positive or negative power value by pressing the [+/-] key.
4.4 Config Menu for Power Supply
In this chapter, the setting items under the configuration menu are described in detail.
4.4.1 Set the CC/CV Priority Mode
CV Priority In CV priority mode, the output is controlled by a constant- voltage feedback loop, which maintains the output voltage at its programmed setting as long as the load current remains within the positive or negative current limit settings. CV priority mode is best suited for use with resistive or high impedance loads, and loads that are sensitive to voltage overshoots. Do not use CV priority mode with low-impedance sources such as batteries, power supplies, or large charged capacitors.

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Power Supply Function
In CV priority mode, the output voltage should be programmed to the desired value. A positive and negative current limit value should also be set. The current limit should always be set to a value that is greater than the actual input current requirement of the external load. The following figure shows the CV priority operating locus of the output. The area in the white quadrants shows the output as a source (sourcing power). The area in the shaded quadrants shows the output as a load (sinking power).

In sink mode, there is a minimum operating voltage. The minimum operating voltage specification data corresponding to different voltage models are as follows.

Voltage Level

Sink Current Minimum Operat- MOV/Vmax ing Voltage (MOV) %

80V 300V 500V 800V 1500V 2250V

-Imax -Imax -Imax -Imax -Imax -Imax

0.8V 1.8V 2.5V 4V 7.5V 11.25V

1% 0.6% 0.5% 0.5% 0.5% 0.5%

*The data in the above table is the actual measurement of Main Version V00.006.011 and above. For other version of the firmware, contact ITECH technical support.

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Power Supply Function
The heavy solid line illustrates the locus of possible operating points as a function of output. As shown by the horizontal portion of the line, the output voltage remains regulated at its programmed setting as long as the load current remains within the positive or negative current limit setting. A CV status flag indicates that the output voltage is being regulated and the output current is within its limit settings.
Note that when the output current reaches either the positive or negative current limit, the unit no longer operates in constant voltage mode and the output voltage is no longer held constant. Instead, the unit will now regulate the output current at its current limit setting.
As shown by the vertical portions of the shaded quadrants, the output voltage may continue to increase in the positive direction or decrease in the negative direction as current is forced into or pulled out of the unit. When the output voltage exceeds the over-voltage protection setting, the output will shut down.

CC Priority

In CC priority mode, the output is controlled by a bi-polar constant current feedback loop, which maintains the output source or sink current at its programmed setting. The output current remains at its programmed setting, provided the load voltage remains within the voltage limit setting. CC priority mode is best suited for use with batteries, power supplies, large charged capacitors, and loads that are sensitive to current overshoots. It minimizes current overshoots during programming, turn-on, and turn-off transitions and seamlessly transitions between positive and negative currents.
In CC priority mode, the output current should be programmed to the desired positive or negative value. A positive voltage limit range should also be set. The voltage upper limit should always be set to a value that is greater than the actual input voltage requirement of the external load. The following figure shows the CC priority operating locus of the output. The area in the white quadrants shows the output as a source (sourcing power). The area in the shaded quadrants shows the output as a load (sinking power).

63

Power Supply Function

In sink mode, there is a minimum operating voltage. The minimum operating voltage specification data corresponding to different voltage models are as follows.

Voltage Level

Sink Current Minimum Operat- MOV/Vmax ing Voltage (MOV) %

80V 300V 500V 800V 1500V 2250V

-Imax -Imax -Imax -Imax -Imax -Imax

0.8V 1.8V 2.5V 4V 7.5V 11.25V

1% 0.6% 0.5% 0.5% 0.5% 0.5%

*The data in the above table is the actual measurement of Main Version V00.006.011 and above. For other version of the firmware, contact ITECH technical support.
The heavy solid line illustrates the locus of possible operating points as a function of output. As shown by the vertical portion of the line, the output current remains regulated at its programmed setting as long as the output voltage remains within its limit setting. A CC (constant current) status flag indicates that the output current is being regulated and the output voltage is within its limit settings.
Note that when the output voltage reaches the upper limit, the unit no longer operates in constant current mode and the output current is no longer held

64

How to Set

Power Supply Function
constant. Instead, the unit will now regulate the output voltage at its voltage limit setting.
As shown by the horizontal portion of the shaded quadrants, when the unit is sinking power, the output current may continue to increase in the negative direction as more current is forced into the unit. This can happen when the instrument is connected to an external device such as a battery, and its output voltage is higher than the voltage limit setting of the instrument. Once the current exceeds the built-in negative over-current limit, the output will shut down. In such a case, it is important to set the voltage limit properly in order prevent this protection shutdown.
The procedures to set the output priority mode are as follows. 1. Press the composite keys [Shift]+[V-set] (Config) on the front panel to enter
the configuration menu. 2. Select Mode and press [Enter] to enter into the setting interface. 3. Select CC or CV, and press [Enter].
Enter the setting interface of the loop response speed. 4. Select High or Low, and press [Enter].
At this point, return to the Config menu settings interface. 5. Press the down arrow key to set the voltage/current rise time. When finished,
press [Enter]. 6. Set the other Config menu items in the same way. 7. Set the output voltage and current value.
· CV priority
a. Press the [V-set] key on the front panel to set the output voltage value Vs.
b. Press the [I-set] key on the front panel to set the current upper limit I +. Press [I-set] again to set the current lower limit I-, i.e. the negative current limit value.
· CC priority
a. Press the [I-set] key on the front panel to set the output current value Is.
b. Press the [V-set] key on the front panel to set the voltage upper limit Vh, and press [V-set] again to set the voltage lower limit Vl.

4.4.2 Set the Internal Resistance
The IT6000C series power supply provides internal resistance setting (CV priority mode only). The procedures are shown as below.

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Power Supply Function
1. Press the composite keys [Shift]+[V-set] (Config) on the front panel to enter the configuration menu.
2. Press the up/down key or rotate the knob to select Output Res and press [Enter] to confirm.
3. Set the internal resistance value and press [Enter] to confirm.

4.4.3 CR Function in Sink Mode

This series of instruments supports CR testing in sink mode, and the sink current capability of CR is controlled by the Is setting value in CC priority mode. The usage of this function is as follows:

1. Press the composite keys [Shift]+[V-set] (Config) on the front panel to enter the configuration menu.

2. Select Mode and press [Enter].

3. Select CC and press [Enter].

Enter the setting interface of the loop response speed.

4. Select High or Low, and press [Enter].

At this point, return to the Config menu settings interface.

5. Press the down arrow key to set the current rise and fall time.

6. Press the down arrow key to select Sink Res and press [Enter].

7. Select On and press [Enter].

8. Set the Sink Res value and press [Enter].

Setting range: 0~7500. If set to 0, the function is equivalent to that Sink Res is selected as OFF.

The following takes the setting of 10 as an example to introduce the actual test results.

9. Set the voltage and current.

a. Press the [I-set] key on the front panel to set the output current value Is. Take 5A as an example.

b. Press the [V-set] key on the front panel to set the voltage upper limit Vh= 20V, and press [V-set] again to set the voltage lower limit Vl=0V.

c. Set the DUT (power supply) to output 80V, 10A.

At this time, 10 in sink mode (according to the formula I=U/R, sink current is 80÷10=8A), due to the limitation of Is=5A in CC priority mode, the actual sink current is 5A, and the instrument is working In CC mode. If Sink Res is set to 20, the sink current is 4A, which is within the limit of Is, so the instrument works in CR mode at this time.

66

4.4.4 Set the Output-On/Output-Off Delay

Power Supply Function

You can set the output-on/output-off delay time within the range from 0 seconds to 60 seconds.
· On Delay: Indicates from the time that a command to turn on the output is re-
ceived until the output actually turns on.
· Off Delay: Indicates from the time that a command to turn off the output is re-
ceived until the output actually turns off.
The procedures to set the output delay time are as follows. 1. Press the composite keys [Shift]+[V-set] (Config) on the front panel to enter
the configuration menu. 2. Press the up/down key or rotate the knob to select On Delay or Off Delay,
and press [Enter] to confirm. 3. Set the output-on/output-off delay time and press [Enter] to confirm.

4.5 Protection Function for Power Supply

The IT6000C series power supply provides the general protection functions such as overvoltage, overcurrent, overpower, undercurrent and undervoltage protection. The corresponding protection parameters can be configured in the Protect menu. In addition, the power supply also provides over temperature protection and Sense reverse connection protection.
The descriptions of Protect menu are listed in the table below.

Protect

Protection function menu for the power supply

OVP Overvoltage protection

Off

Turn the OVP function off. (Def)

On

Turn the OVP function on.

Level

OVP limit

Delay

Protection delay time, see Protection Delay.

OCP Overcurrent protection

Off

Turn the OCP function off. (Def)

On

Turn the OCP function on.

Level

OCP limit

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Power Supply Function

OPP UCP
UVP

Delay

Protection delay time, see Protection Delay.

Overpower protection

Off

Turn the OPP function off. (Def)

On

Turn the OPP function on.

Level Delay

OPP limit
Protection delay time, see Protection Delay.

Undercurrent protection

Off

Turn the UCP function off. (Def)

On

Turn the UCP function on.

Warm-up

Indicates the instrument warm-up time. This time is set to prevent the instrument from triggering protection when the current is rising. Because this transient condition should not be considered as an undercurrent fault and there is no need to trigger protection.

Level

UCP limit

Delay

Protection delay time, see Protection Delay.

Undervoltage protection

Off

Turn the UVP function off. (Def)

On

Turn the UVP function on.

Warm-up

Indicates the instrument warm-up time. This time is set to prevent the instrument from triggering protection when the voltage is rising. Because this transient

68

Level Delay

Power Supply Function
condition should not be considered as an undervoltage fault and there is no need to trigger protection.
UVP limit
Protection delay time, see Protection Delay.

Protection Delay
You can specify an OCP/OVP/OPP/UCP/UVP delay to prevent momentary output settings and status changes from tripping the protection. In most cases these momentary conditions would not be considered an protection fault, and having an OCP/OVP/OPP/UCP/UVP condition disable the output when they occur would be a nuisance. Specifying an protection delay (Delay) can ignore these momentary changes during the specified delay period. Once the delay time has expired and the protection limit condition persists, the output will shut down.
Protection Prompt
When the instrument enters the protection state, the buzzer sounds (if Beep menu item is set as default state On), the VFD status indicators Prot and Off are lit, and [On/Off] is turned off.
Although [On/Off] is turned off, there may be dangerous voltage at the output electrodes. Do not touch the wiring cable or the electrode terminals.
When protection is generated, the VFD screen displays the following information:
· The first row shows the meter voltage and the meter current value. · The left side of the second row shows the specific protection information
(such as overvoltage protection OVP), the right side shows the duration of the protection (hour: minute: second) and the number of protection information in the message queue and the total number of protection information.

69

Power Supply Function
Users can turn the page through the knob to view all the protection information.
Clear the Protection
After the instrument triggers protection and generates a protection message, you need to troubleshoot the possible cause. When the protection is resolved, the VFD will still prompt the protection information. You can manually clear the protection information record through the following methods.
· Input a pulse signal to pin 1 of the rear panel P-IO to clear the protection
information. For details, see 5.11.1 IO1. Ps-Clear, Not-Invert.
· Press the [Esc] or [Enter] key on the front panel to manually clear the pro-
tection information.
· Connected to the host computer, the PC sends a PROTection:CLEar com-
mand to the instrument to clear the protection information. After the protection is cleared, you need to press the [On/Off] key on the front panel or send the OUTPut ON command to the instrument to reopen [On/Off].
4.5.1 Set Over-Voltage Protection (OVP)
Users can enable the OVP function and set the protection limit Level and protection delay time Delay. When the voltage (i.e., the Meter value) is greater than this protection limit and the delay time is exceeded, the power supply will enter the OVP state.
Possible Cause
Many reasons can cause OVP, the details are as follows:
· The set protection limit Level is lower than the voltage Meter value. · The external (AC input) inputs a higher voltage. · The power supply outputs a high voltage due to a fault.
Please avoid inputting a external voltage higher than 120% rated value, or the instrument will be damaged.

70

How to Set

Power Supply Function
The operation steps to set OVP are as follows. 1. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to en-
ter the protection menu. 2. Press the up/down key or rotate the knob to select

OVP (Off) and press
[Enter]. 3. Press the left/right key or rotate the knob to select On and press [Enter] to
enter the setting interface. 4. Set the protection limit Level and the delay time Delay in sequence, and
press [Enter] to confirm. The VFD screen returns to the Protect menu and the OVP setting (take 150V, 1S as an example) is displayed as follows: PROTECT 1.OVP 150V, 1S

4.5.2 Set Over-Current Protection (OCP)

Users can enable the OCP function and set the protection limit Level and protection delay time Delay. When the current (i.e., the Meter value) is greater than this protection limit and the delay time is exceeded, the power supply will enter the OCP state.

Possible Cause
Many reasons can cause OCP, the details are as follows:
· The set protection limit Level is lower than the current Meter value. · The external (AC input) inputs a higher current. · The power supply outputs a high current due to a fault.

How to Set

The operation steps to set OCP are as follows.
1. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to enter the protection menu.
2. Press the up/down key or rotate the knob to select 2. OCP (Off) and press [Enter].
3. Press the left/right key or rotate the knob to select On and press [Enter] to enter the setting interface.

71

Power Supply Function
4. Set the protection limit Level and the delay time Delay in sequence, and press [Enter] to confirm.

For bi-directional power supplies, Level can be set to a positive or negative value, i.e. the same protection limit is set for the output or input current.
The VFD screen returns to the Protect menu and the OCP setting (take 10A, 1S as an example) is displayed as follows: PROTECT 2.OCP 10A, 1.000S

4.5.3 Set Over-Power Protection (OPP)

Users can enable the OPP function and set the protection limit Level and protection delay time Delay. When the power (i.e., the Meter value) is greater than this protection limit and the delay time is exceeded, the power supply will enter the OPP state.

Possible Cause
Many reasons can cause OPP, the details are as follows:
· The set protection limit Level is lower than the power Meter value. · The power supply outputs a high power due to a fault.

How to Set

The operation steps to set OPP are as follows.
1. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to enter the protection menu.
2. Press the up/down key or rotate the knob to select 3. OPP (Off) and press [Enter].
3. Press the left/right key or rotate the knob to select On and press [Enter] to enter the setting interface.
4. Set the protection limit Level and the delay time Delay in sequence, and press [Enter] to confirm.

72

Power Supply Function

For bi-directional power supplies, Level can be set to a positive or negative value, i.e. the same protection limit is set for the output or input power.
The VFD screen returns to the Protect menu and the OPP setting (take 150W, 1S as an example) is displayed as follows: PROTECT 3.OPP 150W, 1.000S

4.5.4 Set Under-Current Protection (UCP)

Users can enable the UCP function and set the instrument warm-up time Warm-up, protection limit Level and protection delay time Delay. When the current (i.e., the Meter value) is lower than this protection limit and the warm-up time, delay time are exceeded, the power supply will enter the UCP state.

Possible Cause
Many reasons can cause UCP, the details are as follows:
· The set protection limit Level is greater than the current Meter value. · The external (AC input) inputs a lower current. · The power supply outputs a low current due to a fault.

How to Set

The operation steps to set UCP are as follows.
1. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to enter the protection menu.
2. Press the up/down key or rotate the knob to select 4. UCP (Off) and press [Enter].
3. Press the left/right key or rotate the knob to select On and press [Enter] to enter the setting interface.
4. Set the warm-up time Warm-up, protection limit Level and delay time Delay in sequence, and then press [Enter] to confirm.

For bi-directional power supplies, Level can be set to a positive or negative value, i.e. the same protection limit is set for the output or input current.

73

Power Supply Function
The VFD screen returns to the Protect menu and the UCP setting (take 10S, 0.1A, 1S as an example) is displayed as follows: PROTECT 4.UCP 10S, 0.1A, 1.000S

4.5.5 Set Under-Voltage Protection (UVP)

Users can enable the UVP function and set the instrument warm-up time Warm-up, protection limit Level and protection delay time Delay. When the voltage (i.e., the Meter value) is lower than this protection limit and the warm-up time, delay time are exceeded, the power supply will enter the UVP state.

Possible Cause
Many reasons can cause UVP, the details are as follows:
· The set protection limit Level is greater than the voltage Meter value. · The external (AC input) inputs a lower voltage. · The power supply outputs a low voltage due to a fault.

How to Set

The operation steps to set UVP are as follows.
1. Press the composite keys [Shift]+[Recall] (Protect) on the front panel to enter the protection menu.
2. Press the up/down key or rotate the knob to select 5. UVP (Off) and press [Enter].
3. Press the left/right key or rotate the knob to select On and press [Enter] to enter the setting interface.
4. Set the warm-up time Warm-up, protection limit Level and delay time Delay in sequence, and then press [Enter] to confirm.
The VFD screen returns to the Protect menu and the UVP setting (take 10S, 1V, 1S as an example) is displayed as follows: PROTECT 5.UVP 10S, 1V, 1.000S

4.5.6 Over-Temperature Protection (OTP)
When internal temperature of instrument is higher than about 90 °C, the instrument is under temperature protection. At this time, the instrument will

74

Power Supply Function
automatically be OFF and VFD status indicator Prot lights up and the screen prompts OTP.

Possible Cause
To prevent damaging heat build-up and ensure specified performance, make sure there is adequate ventilation and air flow around the instrument to ensure proper cooling. Do not cover the ventilation holes on the rear panel, sides, or bottom of the instrument. Even with proper ventilation, the instrument can overheat in the following situations.
· If the ambient temperature is too high. · If you use the instrument to test for long periods.

How to Set

The OTP limit does not need to be set, and the internal device of the instrument automatically detects and determines whether to enter the OTP state.
If an over-temperature condition occurs, power off the instrument and allow it to cool for at least 30 minutes. After the internal temperature of the instrument has cooled down, power it on again.

When you return power to the instrument, verify that the cooling fan is running. If not, please contact ITECH Technical Support. Leaving the instrument powered on with an inoperative cooling fan may result in damage to the instrument.

4.5.7 Sense Reverse Protection
The instrument defaults to provide sense reverse protection. The premise is that the Sense switch is turned on. When the output state is ON and the difference between output terminal voltage and se