AMETEK 4kW Series Power Supplies

Product Information

Specifications:

• Models: 3kW, 4kW

• Part Number: M362000-01

• Date and Revision: January 2011, Revision E

• Contact Information:

  • Telephone: 800 733 5427 (toll free in North America), 858 450 0085 (direct)

  • Fax: 858 458 0267

  • Email: sales@programmablepower.com,
    service@programmablepower.com

  • Web: www.programmablepower.com

About AMETEK:

AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation, and power conditioning applications across diverse industrial segments. From bench-top supplies to rack-mounted industrial power subsystems, AMETEK Programmable Power is the proud manufacturer of Elgar, Sorensen, California Instruments, and Power Ten brand power supplies.

AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices with annualized sales of $2.5 billion. The Company has over 11,000 colleagues working at more than 80 manufacturing facilities and more than 80 sales and service centers in the United States and around the world.

Trademarks:

AMETEK is a registered trademark of AMETEK, Inc. Other trademarks, registered trademarks, and product names are the property of their respective owners and are used herein for identification purposes only.

Notice of Copyright Exclusion for Documentation:

UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC. (AMETEK):

1. MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
2. ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.
3. REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION, WHICH IS POSTED AT WWW.PROGRAMMABLEPOWER.COM.

Product Usage Instructions

1. Safety Instructions:

Before applying power to the system, verify that your product is configured properly for your particular application.

WARNING: Hazardous voltages may be present when covers are removed. Qualified personnel must use extreme caution when servicing this equipment. Circuit boards, test points, and output voltages also may be floating above (below) chassis ground.

WARNING: The equipment used contains ESD sensitive parts. When installing equipment, follow ESD Safety Procedures. Electrostatic discharges might cause damage to the equipment.

2. Installation:

Follow the steps below to install the DLM-E 3kW & 4kW Series Power Supplies:

1. Ensure you have received all the necessary components and accessories mentioned in the package contents.
2. Select a suitable location for the power supply unit that provides proper ventilation and easy access for maintenance.
3. Connect the power supply to a grounded AC power source using the provided power cord.
4. Connect any required external devices or load to the power supply according to your application requirements.
5. Double-check all connections and ensure they are secure.

3. Operation:

To operate the DLM-E 3kW & 4kW Series Power Supplies, follow these steps:

1. Ensure the power supply is properly installed and connected to the power source.
2. Turn on the power supply using the power switch.
3. Set the desired output voltage and current using the control panel or interface provided.
4. Monitor the output parameters on the display or through the interface.
5. Use appropriate safety precautions and follow the specific instructions for your application while using the power supply.

4. Maintenance:

Regular maintenance helps ensure optimal performance and longevity of the DLM-E 3kW & 4kW Series Power Supplies. Follow these guidelines:

1. Periodically inspect the power supply for any physical damages or loose connections.
2. Clean the exterior surfaces using a soft, lint-free cloth.
3. Refer to the user manual for any specific maintenance instructions provided by the manufacturer.

5. Troubleshooting:

If you encounter any issues or problems with the DLM-E 3kW & 4kW Series Power Supplies, refer to the troubleshooting section of the user manual or contact the manufacturer’s customer support for assistance.

FAQs

• Q: Where can I find the English language version of the manual?
  • A: The English language version of the manual can be found onthe manufacturer’s website at www.programmablepower.com.
• Q: How can I contact customer support?
  • A: You can contact customer support by telephone at 800 733 5427 (toll free in North America) or 858 450 0085 (direct), or by email at sales@programmablepower.com or service@programmablepower.com.

DLM-E 3kW & 4kW Series Power Supplies

Operation Manual

This manual covers models:

3kW
DLM5­350E DLM8­350E DLM16­185E DLM32­95E DLM40­75E DLM60­50E DLM80­37E DLM150­20E DLM300­10E DLM600­5E

4kW
DLM5­450E DLM8­450E DLM16­250E DLM22-180E DLM32­125E DLM40­100E DLM60­66E DLM80­50E DLM150­26E DLM300­13E

DLM600­6.6E

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ABOUT AMETEK

AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation and power conditioning applications across diverse industrial segments. From bench top supplies to rack-mounted industrial power subsystems, AMETEK Programmable Power is the proud manufacturer of Elgar, Sorensen, California Instruments and Power Ten brand power supplies.
AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices with annualized sales of $2.5 billion. The Company has over 11,000 colleagues working at more than 80 manufacturing facilities and more than 80 sales and service centers in the United States and around the world.

Trademarks
AMETEK is a registered trademark of AMETEK, I nc.
Other trademarks, registered trademarks, and product names are the property of their respective owners and are used herein for identification purposes only.

Notice of Copyright
DLM-E 3kW & 4kW Series Power Supplies Operation Manual © 2002-2011AMETEK Programmable Power, I nc. All rights reserved.

Exclusion for Documentation
UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC. (“AMETEK”):

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFI CI ENCY OR SUI TABI LI TY OF ANY TECHNI CAL OR OTHER I NFORMATI ON PROVI DED I N I TS MANUALS OR OTHER DOCUMENTATI ON.
(b) ASSUMES NO RESPONSI BI LI TY OR LI ABI LI TY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECI AL, DI RECT, I NDI RECT, CONSEQUENTI AL OR I NCI DENTAL, WHI CH MI GHT ARI SE OUT OF THE USE OF SUCH I NFORMATI ON. THE USE OF ANY SUCH I NFORMATI ON WI LL BE ENTI RELY AT THE USER’S RI SK, AND
(c) REMI NDS YOU THAT I F THI S MANUAL I S I N ANY LANGUAGE OTHER THAN ENGLI SH, ALTHOUGH STEPS HAVE BEEN TAKEN TO MAI NTAI N THE ACCURACY OF THE TRANSLATI ON, THE ACCURACY CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT I S CONTAI NED WI TH THE ENGLI SH LANGUAGE VERSI ON, WHI CH I S POSTED AT WWW.PROGRAMMABLEPOWER.COM.
Date and Revision
January 2011Revision E
Part Number
M362000-01
Contact I nformation Telephone: 800 733 5427 (toll free in North America)
858 450 0085 (direct)

Fax:

858 458 0267

Email:

sales@programmablepower.com service@programmablepower.com

Web:

www.programmablepower.com

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IMPORTANT SAFETY INSTRUCTIONS

Before applying power to the system, verify that your product is configured properly for your particular application.

WARNING

Hazardous voltages may be present when covers are removed. Qualified personnel must use extreme caution when servicing this equipment. Circuit boards, test points, and output voltages also may be floating above (below) chassis ground.

WARNING

The equipment used contains ESD sensitive parts. When installing equipment, follow ESD Safety Procedures. Electrostatic discharges might
cause damage to the equipment.

Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform installation and servicing.
Ensure that the AC power line ground is connected properly to the Power Rack input connector or chassis. Similarly, other power ground lines including those to application and maintenance equipment must be grounded properly for both personnel and equipment safety.
Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable.
In normal operation, the operator does not have access to hazardous voltages within the chassis. However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally generated on the output terminals. The customer/user must ensure that the output power lines are labeled properly as to the safety hazards and that any inadvertent contact with hazardous voltages is eliminated.
Guard against risks of electrical shock during open cover checks by not touching any portion of the electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses during open cover checks to avoid personal injury by any sudden component failure.
Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales organizations can accept any responsibility for personnel, material or inconsequential injury, loss or damage that results from improper use of the equipment and accessories.
SAFETY SYMBOLS

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Product Family: DLM-E 3kW & 4kW Series Pow er Supplies
Warranty Period: Five Years

WARRANTY TERMS

AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the Product stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in material or workmanship within the applicable warranty period stated above, then AMETEK may, at its option: repair or replace the Product; or issue a credit note for the defective Product; or provide the Buyer with replacement parts for the Product.
The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in accordance with the return procedure specified below. AMETEK will, at its expense, deliver the repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under the Purchase Order Agreement or where the Product or any part thereof:
is damaged by misuse, accident, negligence or failure to maintain the same as specified or required by AMETEK;
is damaged by modifications, alterations or attachments thereto which are not authorized by AMETEK;
is installed or operated contrary to the instructions of AMETEK; is opened, modified or disassembled in any way without AMETEK’s consent; or is used in combination with items, articles or materials not authorized by AMETEK.
The Buyer may not assert any claim that the Products are not in conformity with any warranty until the Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement.
PRODUCT RETURN PROCEDURE
Request a Return Material Authorization (RMA) number from the repair facility (must be done in the country in w hich it w as purchased):
In the USA, contact the AMETEK Repair Department prior to the return of the product to AMETEK for repair: Telephone: 800-733-5427, ext. 2295 or ext. 2463 (toll free North America) 858-450-0085, ext. 2295 or ext. 2463 (direct)
Outside the United States, contact the nearest Authorized Service Center (ASC). A full listing can be found either through your local distributor or our website, www.programmablepower.com, by clicking Support and going to the Service Centers tab.
When requesting an RMA, have the following information ready:
Model number Serial number Description of the problem
NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense.
NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to an evaluation fee and applicable freight charges.

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ABOUT THIS MANUAL
This manual has been written expressly for AMETEK’s Sorensen brand DLM­E 3kW and 4kW series of power supplies, which have been designed to meet the 1997 Low Voltage and Electromagnetic Compatibility Directive Requirements of the European Community, except DLM16-185E and DLM22-180E models.
These models have been designed and tested to meet the Electromagnetic Compatibility directive (European Council directive 2004/108/EC, generally referred to as the EMC directive) and to the requirements of the Low Voltage directive (European Councel directive 2006/95/EC, 93/68/EEC, dated 22 July 1993). In addition, these models have been found to be compliant with FCC 47 CFR Part 15, Subpart B, 107(e) Class A, 109(g) Class A.
Since the goal of the Low Voltage Directive is to ensure the safety of the equipment operator, universal graphic symbols (see Safety Notice above) have been used both on the unit itself and in this manual to warn the operator of potentially hazardous situations.

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SECTION 1

FEATURES AND SPECIFICATIONS

1.1 Description
The DLM­E Series 3000 and 4000 watt power supplies are designed to provide highly stable, continuously variable output voltage and current for a broad range of development, system and burn­in applications. Model numbers for this series are designated by the DLM prefix, followed by the output voltage and current ratings. For example, the model number DLM40­100E indicates that the unit is rated at 0­40 VDC and 0­100 amps while a model DLM8­350E is rated at 0­8 VDC and 0­350 amps. The DLM­E Series employs high frequency switching regulator technology to achieve high power density and small package size.
1.2 Operating Modes
The DLM­E Series supply has two basic operating modes: Constant Voltage and Constant Current. In constant voltage mode, the output voltage is regulated at the selected value while the output current varies with the load requirements. In constant current mode, the output current is regulated at the selected value while output the voltage varies with the load requirements.
An automatic crossover system enables the unit to switch operating modes in response to varying load requirements. If, for example, the unit is operating in voltage mode and the load current attempts to increase above the setting of the current control, the unit will switch automatically from voltage mode to current mode. If the load current is subsequently reduced below the setting of the current control the unit will return to voltage mode automatically.
1.3 Pow er Supply Features
· 3 kW and 4 kW models with voltage ranges from 0­5 VDC to 0­600 VDC and current ranges from 0­5A to 0­450A.
· 3 kW models operate with either single or three­phase AC input power without jumpers.
· High input AC power factor, 0.95 typical, with three­phase 208, 400, or 480 VAC inputs.

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Features and Specifications

DLM-E 3kW & 4kW Series Power Supplies

• High input AC power factor, 0.98 typical, with single­phase input.
  · Front panel controls for Enable/Standby and Local/Remote modes of operation.
  · Simultaneous digital display of both DC voltage and current.
  · Front panel preview switch allows voltage, current, and OVP to be preset from local or remote control.
  · Local lockout feature with front panel indicator is selectable by rear panel switch.
  · No internal jumpers or switches to change programming and monitor ranges.
  · Current sharing parallel port and simple cable interface allows several units to be connected in parallel to provide increased power and current.
  · Voltage and current controls with ten turn potentiometers permit high resolution setting of the output voltage and current from zero to the rated output.
  · Automatic mode crossover into current or voltage mode, with mode indication.
  · High frequency switching technology allows high power density, providing increased power output in a small package.
  · Remote sensing to compensate for losses in power leads.
  · Fast response time for programming or load changes.
  · Adjustable Over­Voltage Protection (OVP) with preview
  · External DC shutdown (positive or negative logic selectable).
  · Remote voltage, current, and OVP programming with selectable programming range.
  · External indicator signals for remote monitoring of OVP status, local/remote programming status, thermal shutdown, and output voltage and current.
  · Installation Category III, Pollution degree 2. For Indoor Use Only.
  · CE Approvals to EN61010-1 1993 CE Mark tested to: EN61326
  EN61010-1:1993 (FCC) 47 CFR Part 15, Subpart B, 107 (e), Class A, 109 (g) Class A
  · Optional IEEE-488 interface for complete remote programming and readback capability with M9E option.
  · M85 slave option allows programming of up to 31 power supplies from one GPIB address.

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DLM-E 3kW & 4kW Series Power Supplies

Features and Specifications

1.4 Specifications
1 .4 .1 3 k W DLM ­E Ele c t ric a l Spe c ific a t ions1

Model

5­350 8­350 16­185 32­95 40­75 60­50 80­37 150­20 300­10 600­5

Output Ratings: Output Voltage Output Current Output Power

0­5V 0­8V 0­16V 0­32V 0­40V 0­60V 0­80V 0­150V 0­300V 0­600V 0­350A 0­350A 0­185A 0­95A 0­75A 0­50A 0­37A 0­20A 0­10A 0­5A 1750W 2800W 2960W 3040W 3000W 3000W 2960W 3000W 3000W 3000W

Line Regulation:2

Voltage (0.05% of Vmax+2mV) 5 mV 6 mV 10 mV 18 mV 22 mV 32 mV 42 mV 77 mV 152 mV 302 mV

Current (0.1% of Imax)

350 mA 350 mA 185 mA 95 mA 75 mA 50 mA 37 mA 20 mA 10 mA 5 mA

Load Regulation:3

Voltage (0.05% of Vmax+2mV) 5 mV 6 mV 10 mV 18 mV 22 mV 32mV 42 mV 77 mV 152 mV 302 mV

Current (0.1% of Imax)

350 mA 350 mA 185 mA 95 mA 75 mA 50 mA 37 mA 20 mA 10 mA 5 mA

Meter Accuracy:

Voltage (0.5% Vmax+1count) 0.04V 0.05V 0.09V 0.3V 0.3V 0.4V 0.5V 0.9V 3V

4V

Current (1.0% Imax+1count) 4A

4A

3A

0.8A 0.7A 0.5A 0.4A 0.3A 0.09A 0.05A

Preview Accuracy Voltage (0.5% Vmax+1 count) 0.04V Current (1.0% Imax+1 count) 6A

0.05V 5A

0.09V 3A

OVP Adjustment Range (6% to 110% Vmax)

0.3­5.5V

0.4­8.8V

0.8­ 17.6V

0.3V 0.3V 0.4V 0.5V 0.9V 1.1A 0.9A 0.6A 0.5A 0.3A

1.6­35V 2­44V

3­66V

4­88V

7.5­ 165V

3V

4V

0.11A 0.06A

15­330V 30­660V

Output Noise and Ripple (V) RMS p­p (20 Hz­20 MHz)
Stability:5, 6 Voltage (0.05% of Vmax) Current (0.05% of Imax)

12 mV 12 mV 10 mV 10 mV 10 mV 15 mV 15 mV 30 mV 60 mV 100 mV 100 mV4 100 mV4 100 mV4 100 mV4 100 mV4 100 mV 120 mV 200 mV 300 mV 500 mV
3 mV 4 mV 8 mV 16 mV 20 mV 30 mV 40 mV 75 mV 150 mV 300 mV 175 mA 175 mA 93 mA 48 mA 38 mA 25 mA 19 mA 10 mA 5 mA 2.5 mA

Temperature Coefficient:7 Voltage (0.02% of Vmax) Current (0.03% of Imax)

1 mV 1.6 mV 3.2 mV 6 mV 8 mV 12 mV 16 mV 30 mV 60 mV 120 mV 105 mA 105 mA 55 mA 30 mA 23 mA 15 mA 12 mA 6 mA 3 mA 1.5 mA

Maximum Remote Sense Line Drop Compensation per line8

2V

2V

2V

5V

5V

5V

5V

5V

5V

5V

1. Specifications are warranted over a temperature range of 0­50°C with default local sensing. From 50­70°C, derate output 2% per °C. From 40­70°C, derate output 2% per °C below 190 VAC with single or three­phase inputs.
   2. For input voltage variation over the AC input voltage range, with constant rated load.
   3. For 0­100% load variation, with constant nominal line voltage.
   4. Typical P­P noise and ripple is 50 mV.
   5. Maximum drift over 8 hours with constant line, load, and temperature, after 15 minute warm­up (30 minute warm­up for 5V, 8V, and 16V models).
   6. Current accuracy for 5V, 8V, and 16V models is 1% typical.
   7. Change in output per °C change in ambient temperature, with constant line and load.
   8. Line drop subtracts from the maximum available output voltage at full rated power.

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Features and Specifications

DLM-E 3kW & 4kW Series Power Supplies

1 .4 .2 4 k W DLM ­E Ele c t ric a l Spe c ific a t ions9

Model

5­450 8­450 16­250 22-180 32­125 40­100 60­66 80­50 150­26 300­13 600­6.6

Output Ratings: Output Voltage Output Current Output Power

0­5V 0­8V 0­16V 0-22V 0­32V 0­40V 0­60V 0­80V 0­150V 0­300V 0­600V 0­450A 0­450A 0­250A 0-180A 0­125A 0­100A 0­66A 0­50A 0­26A 0­13A 0­6.6A 2250W 3600W 4000W 4000W 4000W 4000W 3960W 4000W 3900W 3900W 3960W

Line Regulation:10 Voltage (0.05% of Vmax+2mV) Current (0.1% of Imax)

5 mV 6 mV 10 mV 13 mV 18 mV 22 mV 32 mV 42 mV 77 mV 152 mV 302 mV 450 mA 450 mA 250 mA 180mA 125 mA 100 mA 66 mA 50 mA 26 mA 13 mA 7 mA

Load Regulation:11 Voltage (0.05% of Vmax+2mV) Current (0.1% of Imax)

5 mV 6 mV 10 mV 13 mV 18 mV 22 mV 32mV 42 mV 77 mV 152 mV 302 mV 450 mA 450 mA 250 mA 180mA 125 mA 100 mA 66 mA 50 mA 26 mA 13 mA 7 mA

Meter Accuracy:

Voltage (0.5% Vmax+1count) 0.04V 0.05V 0.09V 0.2V 0.3V 0.3V 0.4V 0.5V 0.9V 1.6V 3.1V

Current (0.75% Imax+1count) 5A

5A

3A

3A

1A

0.9A 0.6A 0.5A 0.3A 0.11A 0.06A

Preview Accuracy Voltage (0.5% Vmax+1 count) 0.04V Current (1.0% Imax+1 count) 6A

OVP Adjustment Range

0.3­

(6% to 110% Vmax)

5.5V

0.05V 0.09V 0.2V 0.3V 0.3V 0.4V 0.5V 0.9V

6A

4A

3A

1.4A 1.1A 0.8A 0.6A 0.4A

0.4­ 8.8V

0.8­ 17.6V

1.124.2V

1.6­35V 2­44V

3­66V

4­88V

7.5­ 165V

3V 0.14A
15­ 330V

4V 0.08A
30­ 660V

Output Noise and Ripple (V) RMS p­p (20 Hz­20 MHz)

12 mV 100 mV12

12 mV 100 mV12

10 mV 100 mV12

10 mV 100 mV12

10 mV 100 mV12

Stability:13, 14 Voltage (0.05% of Vmax) Current (0.05% of Imax)

3 mV 4 mV 8 mV 11 mV 16 mV 225 mA 225 mA 125 mA 90 mA 63 mA

Temperature Coefficient:15 Voltage (0.02% of Vmax) Current (0.03% of Imax)

1 mV 1.6 mV 3.2 mV 4.4 mV 6 mV 135 mA 135 mA 75 mA 54 mA 38 mA

Maximum Remote Sense Line Drop Compensation per line16

2V

2V

2V

2V

5V

10 mV 100 mV12
20 mV 50 mA
8 mV 30 mA
5V

15 mV 100 mV

15 mV 120 mV

30 mV 100 mV

60 mV 150 mV

100 mV 300 mV

30 mV 40 mV 75 mV 150 mV 300 mV 33 mA 25 mA 13 mA 6.5 mA 3.3 mA

12 mV 16 mV 30 mV 60 mV 120 mV 19.8 mA 15 mA 7.8 mA 3.9 mA 2.0 mA

5V

5V

5V

5V

5V

9. Specifications are warranted over a temperature range of 0­50°C with default local sensing. From 50­70°C, derate output 2% per °C. From 40­70°C, derate output 2% per °C below 190 VAC with single or three­phase inputs.
   10. For input voltage variation over the AC input voltage range, with constant rated load.
   11. For 0­100% load variation, with constant nominal line voltage.
   12. Typical P­P noise and ripple is 50 mV.
   13. Maximum drift over 8 hours with constant line, load, and temperature, after 15 minute warm­up (30 minute warm­up for 5V, 8V, and 16V models).
   14. Current accuracy for 5V, 8V, and 16V models is 1% typical.
   15. Change in output per °C change in ambient temperature, with constant line and load.
   16. Line drop subtracts from the maximum available output voltage at full rated power.

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DLM-E 3kW & 4kW Series Power Supplies

Features and Specifications

1.4.3 Additional Specifications

AC Input:

Output Power 3 kW19 3 kW19
4 kW
4 kW
4 kW

Nominal Input Voltage
230 VAC Single­Phase
208 VAC Three­Phase
208 VAC Three­Phase
380/400/415 VAC Three­Phase
480 VAC Three­Phase

Input Option
Std
Std
Std
M1
M2

Input Range (47­63 Hz) 180­264 VAC L­L
180­264 VAC L­L
180­264 VAC L­L
345­455 VAC L­L
432­528 VAC L­L

Input Current Maximum17 21A RMS
12A RMS
15A RMS
8.5A RMS
6.5A RMS

17. Maximum input current measured at low AC line and maximum output power. 18. Power factor measured at nominal line, maximum output power. 19. The 3 kW DLM­E is designed to operate without derating to the output power level with either
    a single­phase or three­phase AC input voltage without any internal jumper changes.

Input Power Factor18 0.98
0.95
0.95
0.95
0.95

Efficiency: 5 and 8 VDC models ­ 82% typical, 16­600 VDC models ­ 87% typical Altitude: 2000M (6562 Ft.) Operating Temperature Range: 0 to 50°C Storage Temperature Range: ­40 to +85°C Humidity Range: 0 to 80% Non­condensing Time Delay from power on until output is stable: 10 seconds maximum Voltage Mode Transient Response Time: 1 ms recovery to 1% band for 30% step load change from 70% to 100% or 100% to 70% Remote Start/Stop and Interlock: TTL compatible input, Contact Closure, 5­24 VDC. Switching Frequency: Nominal 32 kHz (64 kHz output ripple) Float Voltage: Negative output terminal may be biased to 150 VDC relative to chassis.
For models 16V, 22V output terminal may be biased to 600 VDC relative to chassis. Remote Analog Programming (Full Scale Input): Scales are selectable through rear panel.

Parameter Voltage Current OVP

Resistance 5 k 5 k 5 k

Voltage 5V, 10V 5V, 10V 5V, 10V

Analog Programming Accuracy: 1% of rated output for voltage programming, 5% of rated output for resistance programming, 2% of rated output voltage for OVP.

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Features and Specifications

DLM-E 3kW & 4kW Series Power Supplies

1.4.4 Mechanical Specifications

Unit Dimensions

Height 87.6 mm (3.5 in)

Width 482.6 mm (19 in)

Depth 508 mm (20 in)

Weight 18.2 kg (40 lbs.)

Output Connector (Models DLM5­XXX through DLM80­XX) Connector type: Nickel­plated copper bus bars
Approximate dimensions: 1″ wide x 0.25″ thick
Distance between positive and negative bus bar main mount in holes: 2.5″
Load wiring mounting holes: Two 0.312″ diameter holes for securing high current output cables. Four 0.201″ diameter holes for securing lower current cables and sense leads.
Remote Sensing: Two pin screw­clamp removable mating connector housing is supplied with each unit for remote sensing. Accommodates sense lead wire 16­22 AWG.
Output Connector (Models DLM150­XX through DLM600­XX) Connector type: Four­position terminal block (two positive and two negative connections) #6­32 plated Phillips head SEMS screws accommodate up to #12 AWG.
Approximate dimensions: Terminal center spacing of 0.437″
Safety: Three-sided plastic cover provided with wire exit cutouts.
Remote Sensing: Two pin screw­clamp removable mating connector housing is supplied with each unit for remote sensing. Accommodates sense lead wire 16­22 AWG.
Input Connector AC Input: 3­position fuse block with screw clamp connectors.
Ground: 10­32 safety ground stud on chassis located below fuse block.
Note 1: Screw clamp connectors accommodate up to AWG #6.
Note 2: Power cables not supplied.
Note 3: A clamp­on EMI filter is supplied with each power supply to allow compliance with the Electromagnetic Compatibility Directive requirements of the European Community. See Section 2 for proper installation.

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

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SECTION 2

INSTALLATION

2.1 Introduction
This section provides recommendations and procedures for inspecting, testing, and installing the DLM­E Series power supply.
1. Read and follow safety recommendations (Section 2.2)
2. Perform an initial physical inspection of the supply (Section 2.3)
3. Become familiar with Controls, Indicators and Rear Panel layout (Section 2.4)
4. Install the supply, ensuring adequate ventilation (Section 2.5)
5. Connect the AC input power (Section 2.6)
6. Perform initial function tests for voltage mode operation, current mode operation, and front panel controls (Section 2.7)
7. Connect the load (Section 2.8)
Instructions for Local Programming Mode operation (Constant Voltage and Constant Current) are given in Section 3 Basic Operation. Remote Programming operation, monitoring, and programmable functions are described in Section 4 Advanced Operation.
2.2 Safety
Please review the following points for both personal and equipment safety while using the DLM­E Series power supplies.
2 .2 .1 H igh Ene rgy/H igh V olt a ge Wa rning
Exercise caution when using and servicing power supplies. High energy levels can be stored at the output voltage terminals on all power supplies in normal operation. In addition, potentially lethal voltages exist in the power circuit and the output connector of power supplies that are

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rated at 40V and over. Filter capacitors store potentially dangerous energy for some time after power is removed.
Use extreme caution when biasing the output relative to the chassis due to potentially high voltage levels at the output terminals. The output of the DLM­E Series supplies may be biased up to a maximum voltage relative to the chassis as specified in Section 1 under Additional Specifications.
2.2.2 AC Source Grounding
Ensure the power supply is connected to an appropriately rated AC outlet with the recommended AC input wiring as set out in Section 2.6 AC Input Power Connection. There is a potential shock hazard if the power supply chassis and cover are not connected to a power return via the safety ground on the chassis. The third wire in a single phase AC input connector and the fourth wire in a three phase AC input connector must be connected to an electrical ground at the power outlet. Any disconnection of this ground will cause a potential shock hazard to operating personnel.
This power supply is equipped with an AC line filter to reduce electromagnetic interference and must be connected to a properly grounded receptacle, or a shock hazard will exist.
2.2.3 EMI Provisions
A clamp­on EMI suppression filter core is included with each unit to allow compliance with the Electromagnetic Compatibility Directive requirement of the European Community. This filter is to be installed so that all of the AC input wires and ground wire that connect to the unit at the AC input fuse block and chassis are clamped inside the filter before operating. See Figure 2­1.

Figure 2­1. EMI Suppression Filter
2.2.4 Operating and Servicing Precautions
Exceeding a model’s maximum rated input voltage may cause permanent damage to the unit. The power supply must not be operated where flammable gases or fumes exist.

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Always disconnect power, remove external voltage sources, and allow time for internal circuits to discharge before making internal adjustments or replacing components. When performing internal adjustments or servicing the unit, ensure another person with first aid and resuscitation certification is present. Repairs must be made by experienced technical personnel only.
Be sure to isolate the power supply from the input line with an isolation transformer when using grounded test equipment, such as an oscilloscope, in the power circuit as these are referenced to the AC input line.
WARNING! Removal of the front panel filter and cover allows access to moving parts and potentially hazardous voltages. Ensure that the power is turned off prior to removal of the filter for maintenance or cleaning.
2.2.5 Parts and Modifications
Do not use substitute parts or make any unauthorized modifications to the power supply to ensure that its safety features are not degraded. Contact customer service engineers for service and repair help.
2.3 Initial Inspection
Upon first receiving your DLM­E Series power supply, perform a quick physical check, paying particular attention to front panel controls and indicators as well as rear panel connectors and terminals. The front and rear panel diagrams are located in Section 2.4.
2.3.1 Physical Check
After unpacking, perform an initial inspection to ensure the unit and parts shipped with it have not been damaged in transit. The package should contain the power supply, a manual, a remote sense connector, a 25­pin sub­D mating connector for J3, and an EMI filter core.
1. Inspect for dents to the cover and chassis; for scratches and cracks on the front and rear panels; and for any broken controls, connectors, or displays.
2. Turn front panel controls from stop to stop. Rotation should be smooth. 3. Test the action of the POWER switch. Switching action should be positive. 4. If internal damage is suspected, remove the cover and check for printed circuit board
and/or component damage. Reinstall cover.
If damage has occurred, save all packing materials and notify the carrier immediately. Refer to the terms of the warranty. Direct any repair problems to the manufacturer.
Note: Section 2.7 Initial Functional Tests contains electrical and operational tests you can perform to ensure the unit is in proper working order after shipment. Run these tests after applying AC input power but before connecting the load to the power supply.
2.4 Controls, Connectors, and Indicators
Refer to Figure 2­2 or Figure 2-3 (depending on the model) and the descriptions below.

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2.4.1 Front Panel User Controls and Indicators
1. CURRENT knob: 10 turn adjustment sets the output current.
2. VOLTAGE knob: 10 turn adjustment sets the output voltage.
3. OVP SET potentiometer: 20 turn trim pot recessed behind front panel sets the over voltage trip limit.
4. POWER switch: Two­position switch enables or disables the supply.
5. ENABLE/STANDBY switch: Two­position switch allows the unit to be placed in an active (enabled) or inactive (standby) mode. The front panel displays are still active in the STANDBY mode.
6. LOCAL/REMOTE switch: Two­position switch selects if the front panel VOLTAGE, CURRENT and OVP controls (local) or the analog programming inputs from the rear panel J3 connector (remote) will determine the output settings for the supply.
7. PREVIEW switches: Two momentary push button switches. While in the STANDBY mode, the V&I button will display the output voltage and current settings prior to power being applied to the load. The OVP button will display the over voltage shutdown set point. Local or remote signal preview settings are selectable with the LOCAL/REMOTE mode switch position.
8. VOLTAGE DISPLAY: 3½ digit green LED display normally indicates DC output voltage of supply. Indicates preset output voltage setting when the V&I PREVIEW button is pushed and indicates the OVP setting when the OVP PREVIEW button is pushed.
9. VOLTAGE MODE indicator: Green LED lights when in the constant­voltage mode of operation. When in the constant voltage mode, the output voltage will regulate to the set value and the current value will vary with the load.
10. CURRENT MODE indicator: Green LED lights when in the constant­current mode of operation. When in the constant current mode, the output current will regulate to the set value and the output voltage will vary with the load.
11. CURRENT DISPLAY: 3½ digit green LED display normally indicates DC output current of supply. Push the V&I PREVIEW button to display preset output current setting.
12. ON (AC Input Power ON) indicator: Yellow LED lights when power switch is on and AC is applied. (Note: this LED does NOT indicate DC output status.)
13. S/D (Shutdown) indicator: Red LED lights when the unit has been shutdown remotely.
14. REM (Remote) indicator: Green LED lights when unit is in remote programming mode.
15. OVP (Over Voltage Protection) indicator: Red LED lights when an over voltage shutdown has occurred.

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Figure 2­2. DLM­E Controls, Connectors, and Indicators (5V­80V models)

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Figure 2-3. DLM­E Controls, Connectors, and Indicators (150V­600V models)

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16. OTEMP (Over Temperature) indicator: Red LED lights when an over temperature shutdown has occurred.
    17. LOCK (Lockout) indicator: Green LED lights when in Lockout mode. Activated by connection through rear panel DIP switch. Can only be activated when the front panel LOCAL/REMOTE switch is in the REMOTE position. Once the Lock function has been activated, it disables LOCAL control for all output control functions except the AC power switch, which remains under front panel control.
    The following indicators will be illuminated only when the optional GPIB controller is installed:
    18. ERR (Error) indicator: Red LED lights to signal a GPIB programming error has occurred.
    19. SRQ (Service Request) indicator: Green LED lights to signal GPIB service request by the supply.
    20. ADDR (Address) indicator: Green LED lights when the unit is addressed by a remote controller.
    2.4.2 Rear Panel
    Refer to Figure 2­2 or Figure 2-3 (depending on the model) and the descriptions below.
    1. Positive Output (+). Bus bar for 5V through 80V models. TB2­1 and 2 for 150V through 600V models.
    2. Negative Output (­). Bus bar for 5V through 80V models. TB2­3 and 4 for 150V through 600V models.
    3. Output connector location for 150V through 600V models.
    4. Programming and Monitor Connector, J3. I/O connector for input programming and analog output monitoring signals as well as status indication and remote shutdown signals. See Table 4­1 for individual pin descriptions.
    5. DIP Switch S1. Eight­position right angle slide DIP switch. Controls full scale settings for Voltage, Current and OVP programming range, Voltage and Current Output Monitor range, Remote On­Off logic selection, Master/Slave operation and Lockout operating mode selections. See Table 4­2 for Rear Panel DIP switch functions and settings.
    6. Parallel Port connectors, J12 and J13. Used in conjunction with S1 setting to control multiple units in parallel mode with current sharing. See Table 4­2 for Rear Panel DIP switch functions and settings and Table 4­3 for parallel port connector function and pinout.
    7. Sense connector, J11. Remote sense lead connection for local and remote load voltage sensing on all models. Connections shown are for local sensing on all models.
    8. AC Input chassis safety ground stud.
    9. AC Input Connector/fuse block with removable safety cover.
    10. Area for optional GPIB assembly.

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2.5 Location, Mounting, and Ventilation
The DLM­E system supply is designed for use in rack mounted applications. Ensure that sufficient space is allowed for cooling air to reach the ventilation inlets on the front of the unit, and for fan exhaust air to exit from the rear of the unit.
2.5.1 Unit Dimensions

Dimension Standard Metric

Height 3.5 in 87.6 mm

Width 19 in 482.6 mm

Depth 20 in 508 mm

Weight 40 lbs 18.2 kg

2.5.2 Rack Mounting
The supply is designed to fit in a standard 19″ equipment rack. Use adjustable support angles such as Hammond RASA22WH2, or a support bar such as Hammond RASB19WH2. Bolt holes in the chassis sides are provided for rack mount slides such as the ZERO #C300S18 slides.
Be sure to provide adequate support for the rear of the unit while not obstructing the exhaust outlets at the rear of the unit.

CAUTION! Rack mounting bolts must not extend more than 3/16″ into the side of the power supply.

2.5.3 Ventilation

The DLM­E system supply is fan­cooled, so it requires unobstructed space on the front ventilation inlets and space at the rear for the ventilation exhaust. The following temperature ranges apply for the best results when operating or storing the unit.

Operating Ambient Temperature1 0 to 50° C with no derating.

Storage Temperature Range ­40 to +85° C

1. From 50 to 70° C, derate 2% per °C. From 40 to 70°C, derate 2% per °C below 190 VAC with single or three­phase inputs.

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2.6 AC Input Pow er Connection
Before you can use the DLM­E system supply, you must determine your AC input power requirements and connect an appropriate cable or line cord to the input connector. The power supply is shipped with an input connector cover which you need to remove to make the input power connections.
WARNING! A device to disconnect the DLM­E supply from the energy supply source is required. This switch or circuit breaker must be close to the DLM­E supply, within easy reach of the operator, and clearly labeled as the disconnection device for the DLM­E supply.

2.6.1 AC Input Pow er Requirements
The specifications for input voltage, current, and frequency are listed below.

Output Power 3 kW3 3 kW3
4 kW
4 kW
4 kW

Nominal Input Voltage
230 VAC Single­Phase
208 VAC Three­Phase
208 VAC Three­Phase
380/400/415 VAC Three­Phase
480 VAC Three­Phase

Input Option

Input Range (47­63 Hz)

Input Current Maximum 2

Std 180­264 VAC L­L 20A RMS

Std 180­264 VAC L­L 12A RMS

Std 180­264 VAC L­L 15A RMS

M1 345­455 VAC L­L 8.5A RMS

M2 432­528 VAC L­L 6.5A RMS

AC Input Terminals
L1­L34 (F1­F3)
L1­L2­L3 (F1­F2­F3)
L1­L2­L3 (F1­F2­F3)
L1­L2­L3 (F1­F2­F3)
L1­L2­L3 (F1­F2­F3)

2. Maximum input current measured at low AC line and maximum output power. 3. The 3 kW DLM­E is designed to operate without derating to the output power level with either
   a single­phase or three­phase AC input voltage without any internal jumper changes. 4. Single-phase AC inputs use L1 and L3 only. Improper connections will result in no output.

2.6.2 Input Line Impedance
The maximum input line impedance for operation at full rated output is 0.1 ohm. Higher source impedance can be tolerated by raising the input line voltage or by reducing the power.

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2.7 Initial Functional Tests
Before connecting the unit to an AC outlet, make sure that the POWER switch is in the Off position, (down) and that the voltage and current control knobs are turned fully counter­ clockwise. The two smaller switches directly to the right of the POWER switch should be depressed up to put the unit in the ENABLE and LOCAL position. Check that the J3 mating connector on the rear of the unit has no jumpers installed on it and that the rear panel DIP switch, S1, settings are all in the UP (1) position. (This is the default configuration as shipped from the factory). Connect the unit to the proper AC power source and turn the POWER switch on. After a 1­2 second power­on delay, the front panel meters should light up with both displays reading zero. The S/D (shutdown) indicator will blink momentarily and then the ON and VOLT MODE indicators should be illuminated.
To check voltage mode operation, proceed as follows:
· Connect a DVM, rated better than 0.5% accuracy, to the rear output terminals, observing correct polarity.
· Rotate the CURRENT control ½ turn clockwise. Slowly rotate the VOLTAGE control clockwise and observe both the internal and external meters. The control range should be from zero to the maximum rated output. Compare the test meter reading with the front panel voltmeter reading. Check that the green VOLTAGE MODE indicator is ON.
· Set the POWER switch to OFF. Note that the internal fans will continue to run for about 10 seconds.
To check current mode operation, proceed as follows:
· Rotate the VOLTAGE and CURRENT controls fully counterclockwise.
· Rotate the VOLTAGE control ½ turn clockwise.
· Connect a high current DC ammeter or current shunt across the rear output terminals, observing correct polarity. Select cables of sufficient current carrying capacity and an ammeter range compatible with the unit’s rated current output. The ammeter/shunt should have an accuracy of better than 0.5%.
· Set the POWER switch to ON.
· Rotate the CURRENT control slowly clockwise. The control range should be from zero to the maximum rated output. Compare the test meter reading with the reading on the front panel ammeter. Check that the green CURRENT MODE indicator is ON.
· Set the POWER switch to OFF. Note that the internal fans will continue to run for about 10 seconds.
2.8 Load Connection
Reliable performance of the DLM­E power supply can be obtained if certain basic precautions are taken when connecting it in a system. To obtain a stable, low noise output, careful attention should be paid to factors such as conductor ratings, system grounding techniques and the way in which the load and remote sensing connections are made.

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2.8.1 Load Conductor Ratings

As a minimum, load wiring must have a current capacity greater than the output current rating of the power supply. This ensures that the wiring will not be damaged even if the load is shorted. The table below shows the maximum current rating, based on 450 amps per square centimeter, for various gauges of wire rated for 105 degrees C operation.
Operation at the maximum current rating results in approximately a 30­degree temperature rise for a wire operating in free air. Where load wiring must operate in areas with elevated ambient temperatures or bundled with other wiring, larger gauges or higher temperature­rated wiring should be used.
To overcome impedance and coupling effects, which can degrade the power supply performance, the use of leads of the largest gauge and shortest length possible is recommended.

AWG 16 14 12 10 8 6 4 2

Maximum Current 7 11 18 23 39 67
106 170

AWG 1 1/0 2/0 3/0 4/0
250 MCM 300 MCM

Maximum Current 209 270 330 350 408 425 480

2.8.2 Noise and Impedance Effects
To minimize noise pickup or radiation from load circuits, load wires and remote sense wires should be twisted-pair with minimum lead length. Shielding of the sense leads may be necessary in high noise environments. Even if noise is not a concern, the load and remote sense wires should be twisted-pairs to reduce coupling between them, which could impact the stability of the power supply. If connectors are utilized for the power and sense leads, be careful not to introduce coupling between the leads. Ensure that the connector terminals for the sense leads are in adjacent locations, and minimize the physical loop area of the untwisted portions. Ideally, the sense leads should be separated from the power leads and should have their own connector.
Twisting the load wires provides an additional benefit in reducing the parasitic inductance of the cable. This improves the dynamic response characteristics at the load by maintaining a low source impedance at high frequencies. Also, with long load wires, the resultant inductance and resistance could produce high frequency voltage spikes at the load due to current variations in the load itself. The impedance introduced between the output of the power supply and the load could make the ripple/noise at the load worse than the specifications of the power supply (which are valid when measured at the rear panel bus bars). Additional filtering with bypass capacitors at the load terminals may be required to bypass the high frequency load currents.

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2.8.3 Making the Connections
Load connections to the power supply are made at the positive and negative output terminals (or bus bars) at the rear of the power supply. See Figure 2­2. The power supply provides three load wiring mounting holes on each bus bar terminal, as specified in the following table. The small holes can be used for local sense lines.

Load Wiring Mounting Holes One (1) per terminal One (1) per terminal Two (2) per terminal

Diameter 0.312″

6­32 Screw 0.201″ on 0.5″ centers

Hardware Size 1/4″ (5/16″ for 8V and 16V models) 0.32″ OD (for 150V­600V models)

10 or smaller

CAUTION! When making connections to the bus bars, provide support when tightening hardware to prevent bending bus bars. Ensure that the mounting hardware at each terminal and wiring assembly is placed to avoid touching the other terminal and shorting the power supply output. Heavy connecting cables must have some form of strain relief to avoid loosening the connections or bending the bus bars.
CAUTION! If unit is not installed in a rack, care should be taken to protect personnel from contact with output bus bars.
2.8.4 Connecting Single Loads
Figure 2­4 and Figure 2­5 show recommended load and sensing connections for a single load. Local sense lines shown are default J11 connections. Refer to Section 3.3.1 Connecting Remote Sense Lines for more information about the sense line shield.

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Figure 2­4. Single Load with Local Sensing (Default) (Local sense lines shown are default J11 to busbar connections)

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Figure 2­5. Single Load with Remote Sensing (Local sense lines shown are default J11 to busbar connections)
2.8.5 Connecting Multiple Loads
Proper connection of distributed loads is an important aspect of power supply applications. Two common methods of connection are the parallel power distribution method and the radial distribution method.
Proper connection of distributed loads is an important aspect of power supply application. A common mistake is to connect leads from the power supply to one load, from that load to the next load, and so on for each load in the system. In this parallel power distribution method, the voltage at each load depends on the current drawn by the other loads and DC ground loops are developed. Except for low current applications, this method should not be used.
The preferred way to distribute power is by the radial distribution method in which power is connected to each load individually from a single pair of terminals designated as the positive and negative distribution terminals. The pair of terminals may be the power supply output terminals, the terminals of one of the loads or a distinct set of terminals specially established for distribution. Connecting the sense leads to these terminals will compensate for losses and minimize the effect of one load upon another.
Figure 2­6 and Figure 2­7 show recommended load and sensing connections for multiple loads. Local sense lines shown are default J11 connections. Refer to Section 3.3.1 Connecting Remote Sense Lines for more information about grounding the sense line shield.

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Figure 2­6. Multiple Loads with Local Sensing (Local sense lines shown are default J11 to busbar connections)

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Figure 2­7. Multiple Loads with Remote Sensing (Local sense lines shown are default J11 to busbar connections)

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BASIC OPERATION

3.1 Introduction
Once the power supply installation is complete and both the AC input power and the load have been connected (see Section 2 Installation), the DLM­E Series power supply is in its default configuration and is ready to operate in local programming mode.
This section covers Constant Voltage and Constant Current Mode operation as controlled by local programming (Section 3.2). Remote sensing for voltage mode operation is described and illustrated in Section 3.3.
Remote Programming operation, monitoring, and programmable functions are described in Section 4 Advanced Operation.
3.2 Standard Operation
The DLM­E Series power supply has two basic operating modes: Constant Voltage Mode and Constant Current Mode, and two control modes: Local Programming Mode (default setting) and Remote Programming Mode. Both operating modes are available regardless of which control mode is used.
This section deals with power supply operation using the Local Programming in both Constant Voltage and Constant Current Modes. Remote Programming Mode as well as monitoring and programmable functions information is found in Section 4 Advanced Operation. Also see Section 3.3 for remote sense operations.
3.2.1 Operating Modes and Automatic Crossover
Whether controlled by local or remote programming, the power supply has two basic operating modes: Constant Voltage Mode and Constant Current Mode. The mode in which the power supply operates at any given time depends on the combination of:
· the output voltage setting VSET and · the output current limit setting ISET and · the resistance of the attached load RL .

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Figure 3­1 provides a graphical representation of the relationships between these variables.
Constant Voltage Mode Operation
The power supply will operate in constant voltage mode whenever the load current I L is less than the current limit setting ISET , or: IL < ISET (Note: IL = VSET / RL)
In constant voltage mode, the power supply maintains the output voltage at the selected value (VSET) while the load current IL varies with the load requirements.
Constant Current Mode Operation
The power supply will operate in constant current mode whenever the load resistance is low enough that the load current IL is greater than the current limit setting ISET , or: IL > ISET
In constant current mode, the power supply maintains the output current at the selected value (ISET) while the load voltage varies with the load requirements.

Figure 3­1. Operating Modes
Automatic Mode Crossover
This feature allows the power supply to automatically switch operating modes in response to changing load requirements. If, for instance, the power supply was operating in Constant Voltage Mode (IL < ISET), and the load changed so that the load current (IL) became greater than the current limit setting (ISET), the power supply would automatically switch into Constant Current Mode. If the additional load was subsequently removed so that the load current was again less than the current limit setting, the supply would automatically return to Constant Voltage Mode.

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3.2.2 Local Programming Mode Operation
Units are shipped from the factory configured for local programming mode operation. In local programming mode:
· Output voltage and current limit settings are adjusted with the front panel controls.
· The sense point of the supply is at the output terminals.
· The front panel OVP potentiometer determines the OVP set point. See Section 4.4 Using Over Voltage Protection (OVP) for the adjustment procedure.
Local Mode Default Configuration
Figure 3­2 shows the default factory settings for switch S1. These controls are used to select among the various options for programming, sensing, and monitoring. See Section 4.2 Configuring for Remote Programming, Sensing, and Monitoring.
S1 Switch Settings S1-1 OPEN S1-2 OPEN S1-3 OPEN S1-4 OPEN S1-5 OPEN S1-6 OPEN S1-7 OPEN S1-8 OPEN
Figure 3­2. Local Mode Default Configuration
Setting Output Voltage and Current Limit
After installing the power supply and connecting the load as described in Section 2 Installation, set the required output voltage and current limit according to the following front panel procedure:
1. Turn both the voltage and current controls fully counter­clockwise.
2. Press the ENABLE/STANDBY switch to the STANDBY position to disable the power supply output.
3. Press the LOCAL/REMOTE switch to the LOCAL position for front panel operation.
4. Turn the POWER switch ON.
5. Press and hold the V&I PREVIEW button to display the voltage and current control settings on the voltmeter and ammeter displays.

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6. Adjust the voltage control to the required voltage (this will be the maximum compliance voltage for applications using current mode operation).
   7. Adjust the current control to the required current limit setting.
   8. Release the V&I PREVIEW button.
   9. Press the ENABLE/STANDBY switch to the ENABLE position to apply power to the load.
   10. The output Voltmeter and Ammeter will now display the actual values being supplied to the load.
   3.3 Using Remote Sensing
   Remote sensing is used during voltage mode operation to shift the power supply’s regulation point from its output terminals (default sense point) to the load or distribution terminals by using a separate pair of wires to monitor the load voltage. Remote sensing allows the power supply to compensate for voltage losses in the load lines which would otherwise degrade the regulation of the supply. The sense line connection points are located on the rear panel J11 connector. Section 4.2 Configuring for Remote Programming, Sensing, and Monitoring has more information about making J3 connector changes.
   CAUTION! Do not use remote sensing with multiple supplies connected in series or in parallel.

3.3.1 Connecting Remote Sense Lines
The DLM­E Series units are shipped with the rear panel J11 Sense connector jumpered for local sensing of the output voltage. With local sensing, the output voltage is regulated at the output. This method does not compensate for voltage losses in the load lines, so it is recommended only for low current applications or applications for which load regulation is not essential.
To connect remote sense lines, refer to Figure 3­3 and to the following procedure:
1. Ensure the power supply is turned OFF. Allow several minutes to elapse to dissipate stored energy before altering J11 connector pin connections.
2. Remove the local sense jumpers connecting J11 pin 1 (positive sense) and pin 3 (negative sense or return sense) to the local bus bar or connector.
3. Connect the positive sense lead from the load to J11 pin 1 and the negative lead to J11 pin 3. Use shielded­twisted pair wiring of 22 AWG or larger for sense lines.
4. Ground the sense line shield, at one point only, to the power supply’s return output connection at the load, or, to the power supply’s return output at its output terminal, or to the power supply’s chassis.

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5. The optimal point for the shield ground must be determined by experiment, but the most common connection point is at the power supply’s return output connection at the load.
   6. Turn the power supply ON.
   Notes:
   1. If the power supply is operated with remote sense lines connected and with either of the positive or negative load lines not connected, the power supply shutdown circuit will be activated, causing the output voltage and current to fall to zero.
   2. If the power supply is operated without remote sense lines or local sense jumpers in place, the supply will continue to work, but supply regulation will be degraded and/or erratic.

Figure 3­3. J11 Sense Connector

Rear Panel J11 Sense Connector Terminals and Functions

Terminal J11-1 J11-2 J11-3

Name Positive Sense (+SNS) N/C Return Sense (­SNS)

Function
Remote positive sense connection. Default connection to (+) bus bar or output connector.
No connection.
Remote negative sense connection. Default connection to (­) bus bar or output connector.

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SECTION 4

ADVANCED OPERATION

4.1 Introduction
The DLM­E Series power supplies offer the following standard features: · Remote Programming of Output Voltage and Current Limit with 0­5V, 0­10V or 0­5k ohms (Section 4.3) · Overvoltage Protection (OVP) with front panel control or 0­5, 0­10V or 0­5k ohms programming (Section 4.4) · Programmable Shutdown with DC, or TTL compatible signals and contact closure (Section 4.5) · Fault Signal, TTL compatible, 10 mA source. (Section 4.9) · Remote Monitoring of Status Indicators for thermal shutdown, OVP status, remote/local programming mode, and voltage/current mode operation (Section 4.6) · Calibrated Readback Signals for output voltage and output current with selectable 0­5V or 0­10V scales (Section 4.6) · Multiple Supply Configurations such as series, parallel, and split supply (Section 4.7) · Remote Voltage Sensing (Section 3.3) · Output Voltage Biasing (Section 4.7)
Accessing these features may require that you use one or more of the following procedures: · Using the front panel REMOTE/LOCAL programming switch. · Reconfiguring the rear panel J3 connector. · Making connections to the J3 connector. · Resetting rear panel DIP switch S1.

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Section 4.2 Configuring for Remote Programming, Sensing, and Monitoring provides a reference to the function and location of these controls, and procedures for making any required changes.

4.2 Configuring for Remote Programming, Sensing,
and Monitoring
This section lists front panel switch, J11 connector, and rear panel DIP switch functions for the DLM­E Series supplies. Subsequently, it provides a location diagram (Section 4.2.2), in addition to procedures for resetting the jumpers and switches (Section 4.2.3), and for reconfiguring or making connections to the J3 connector (Section 4.2.4).
You will find remote programming procedures and diagrams covered in more detail in Section 4.3, remote sensing in Section 3.3, and remote monitoring of readback signals and status indicators in Section 4.6.

4.2.1 Programming, Monitoring, and Control Functions

Front Panel REMOTE/LOCAL Switch
You can use the REMOTE/LOCAL Programming switch for remote programming. When set to REMOTE programming, control of OUTPUT VOLTAGE, CURRENT LIMIT and OVP is passed to external voltage or current sources which are connected to the J3 connector. Resetting the switch to LOCAL position returns the supply to local (front panel) control. See Section 4.3 for more information about using this switch.

External J3 Connector (see Figure 4­1)
The factory default configuration for the J3 connector is with no jumpers or other connections. The external J3 connector provides user access to the following functions:

• Remote programming of output voltage or current limit, and for OVP · Remote monitoring of the following readback signals and status indicators

Readback Signals Voltage Monitor Current Monitor

Status Indicators Overtemperature shutdown OVP status Remote/Local programming mode Volt/Curr operating mode

• Remote programming of the shutdown function using DC or TTL compatible signals

WARNING! Use extreme caution when biasing the output relative to the chassis due to potentially high voltage levels at the output and J3 terminals.

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Figure 4­1. J3 Connector

Pin No.

Function

1

Remote Output Enable 1 = Enable, 0 = Disable

2 Remote Shutdown Return (­)

3 Remote OVP Programming Input

4

Remote Programming Indicator 1 = Remote, 0 = Local

5

Operating Mode Indicator 1 = Volt mode, 0 = Current mode

6 Status Indicator Return (­)

7 Current Monitor Output

N/C ­ for all models , except
8 16V, 22V models ­ Fault signal, Active High, 10mA current source

9 Voltage Programming Input

10 Current Programming Input 11 N/C 12 Programming/Monitor Return (­) 13 N/C

Pin No.

Function

14

Remote Shutdown Input (+). Positive or negative true logic selection with S1

15 +5 VDC Aux. Output

16

1 mA current source for OVP Programming

17

OVP Status Indicator 1 = OVP Shutdown, 0 = Normal

18

Overtemp Shutdown Indicator 1 = OTP Shutdown, 0 = Normal

19 DC Voltage Monitor Output

20 Remote/Local Voltage Control Select

21

1 mA current source for Voltage Programming

22

1 mA current source for Current Programming

23 Remote/Local Current Control Select

24 N/C

25 N/C

Table 4­1. J3 Connector ­ Program, Control, and Monitor Description (D­subminiature 25­Pin Female)

4.2.2 Rear Panel DIP Sw itch
Switch S1 is located on the main printed circuit board and is able to be changed through the rear panel of the power supply. The J3 connector is located on the unit’s rear panel. See Section 4.2.3 Resetting Rear Panel DIP Switch Settings and Section 4.2.4 Making J3 Connections.

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Figure 4­2. Locating Jumpers, Switch, and Connector

Switch Position

Function

S1-1

Voltage Programming Input Range

S1-2

Current Programming Input Range

S1-3

OVP Programming Input Range

S1-4

Voltage Monitor Output Range

S1-5

Current Monitor Output Range

S1-6

Remote Shutdown Activation

S1-7

Master/Slave Parallel Output Enable

S1-8

Front Panel Lockout

• Factory default position

Open Position (Up) *
0­5 VDC 0­5 VDC 0­5 VDC 0­5 VDC 0­5 VDC Active High Signal Single or Master Normal

Closed Position (Down)
0­10 VDC 0­10 VDC 0­10 VDC 0­10 VDC 0­10 VDC Active Low Signal
Slave Lockout Mode

Table 4­2. Rear Panel S1 DIP Switch Functions and Settings

4.2.3 Resetting Rear Panel DIP Sw itch Settings
Some applications require the default factory settings of the rear panel 8­position DIP switch, S1. If the switch requires resetting, read Section 2.2, and follow the procedures in this section. Always turn off the front panel power switch before moving any DIP switch settings.
4.2.4 Making J3 Connections
The default factory configuration of the J3 connector has no jumpers. Other applications will require placing pin­to­pin connections or making connections to external devices such as voltage sources, or resistances. Read Section 2.2 Safety, and follow the procedures in this section whenever the rear panel connector, J3, is to be reconfigured. Always turn off the front panel power switch before soldering to the J3 connector, and only solder with the mating connector removed from the supply.

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Making the Connection
To make pin­to­pin connections:
1. Unsolder any unnecessary pin­to­pin jumpers as required by the application. 2. Solder new connections using any appropriate single bus wire such as AWG 20 to 24.
To connect external source leads, resistance leads, or monitoring lines:
3. Unsolder any unnecessary jumpers as required by the application. 4. Solder leads to the specified pin using the recommended wiring and/or grounding point
for the application. Pin, wiring, and grounding specifications for particular applications can be found in Section 4. Advanced Operation except for remote sensing specifications which are in Section 3.3 Using Remote Sensing.
NOTE When the front panel LOCAL/REMOTE Switch is moved to REMOTE operation, voltage, current, and OVP programming functions must be remotely programmed. For clarity, only the connections for the function being described are shown in the following figures.

4.3 Remote Programming of Output Voltage and Current Limit
Remote programming allows control of the power supply’s output voltage and/or current limit to shift from local operation at the front panel voltage and current controls to external analog input sources. As a programming source is varied, the power supply’s output varies proportionally over its output range.
The analog programming signals are connected to the rear panel J3 connector. To provide the lowest noise performance, shielded­twisted pair wiring is recommended for making connections from external circuits to the J3 connector. Use the shortest leads possible. Ground the shield to pin 12 on the J3 connector or to the chassis via one of the J3 connector screws.
CAUTION! The remote programming input is internally referenced to the supply’s negative output. Do not connect remote programming input lines (J3 pins 9 & 10) to the supply’s positive output.
Remote Programming Options
The following table summarizes access options for programming output voltage and current limit with the input scales supported for the DLM­E Series supply. Refer to Section 4.3.1 for a procedure and a connection diagram for programming output voltage and current limit using the REMOTE/LOCAL switch. Subsequent sections provide short procedures and diagram the J3

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connector configurations and connections required for remote programming of output voltage and/or current limit without using the REMOTE/LOCAL switch.

Remote Programming Options Programming with the REMOTE/LOCAL Switch
Programming without the REMOTE/LOCAL Switch (Jumper J3 Connector)

Control of …
Output Voltage Current Limit Over Voltage Setting
Output Voltage and/or Current Limit

• These scales may be used in any combination

Programming Scales * 0­5V, 0­10V, 0­5K
0­5V, 0­10V, 0­5K Local control

4.3.1

Programming Output Voltage and Current Limit w ith the REM OT E/LOCAL Sw it c h

The front panel REMOTE/LOCAL Programming switch will allow you to switch back and forth between remote and local operation when programming output voltage and current limit with external voltage and/or current sources.

For programming output voltage and current limit using the REMOTE/LOCAL switch:

1. Connect a programming source between pins 9 (voltage programming input/positive) and 12 (return).
2. Connect a programming source between pins 10 (current limit programming input/positive) and 12 (return).
3. Connect a programming source between pins 3 (OVP programming input/positive) and 12 (return).
4. Connect a TTL high signal to Pin 1 (remote output enable). An external source must be referenced to Pin 6 (common). Pin 15 (+5V) may be used as a source.
5. Set the front panel REMOTE/LOCAL switch to REM.

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Figure 4­3. Programming Output Voltage, Current Limit and OVP with REM/LOC Switch

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4.3.2 Programming Output Voltage
Programming Output Voltage with a 0­5 VDC or 0­10 VDC Source
1. Set S1-1, the rear panel DIP Switch, UP, in the open position for 0­5 VDC programming range.
2. Set S1-1, the rear panel DIP Switch, DOWN, in the closed position for 0­10 VDC programming range.
3. Connect the external programming source between pins 9 (voltage programming input/positive) and 12 (return). Varying the programming voltage from 0 to maximum will cause the output to vary from 0 to 100% of the model rating. Adjust the programming signal to zero.
4. Turn the power supply ON.
5. Set the front panel LOCAL/REMOTE switch to the REMOTE position and adjust the external programming source voltage. By pressing the V&I PREVIEW button and observing the front panel voltmeter reading, the external control can be adjusted to the desired setting.

S1 Switch Settings
S1-1 OPEN = 0­5V S1-1 CLOSED = 0­10V

Figure 4­4. Programming Output Voltage with a 0­5 VDC or 0­10 VDC Source

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Programming Output Voltage with Resistance
1. Set S1-1, the rear panel DIP Switch, UP, in the open position for 0­5k ohm programming range.
2. Connect pins 9 (voltage programming input/positive) and 21 (1mA current source for voltage control) to the counter­clockwise end of the potentiometer and connect the tap and clockwise end of the potentiometer to pin 12 (return). Adjusting the resistance from 0 to maximum will vary the output voltage from 0 to 100% of the model rating. Adjust the programming signal to zero.
3. Turn the power supply ON.
4. Set the front panel LOCAL/REMOTE switch to the REMOTE position and adjust the external programming resistance. By pressing the V&I PREVIEW button and observing the front panel voltmeter reading, the external control can be adjusted to the desired setting.

S1 Switch Settings S1-1 OPEN = 0­5K

Figure 4­5. Programming Output Voltage with a 0­5k Ohm Resistance

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4.3.3 Programming Output Current Limit
Programming Output Current Limit with a 0­5 VDC or 0­10 VDC Source
1. Set S1-2, the rear panel DIP Switch, UP, in the open position for 0­5 VDC programming range.
2. Set S1-2, the rear panel DIP Switch, Down, in the closed position for 0­10 VDC programming range.
3. Connect the external programming source between pins 10 (current programming input/positive) and 12 (return). Varying the programming voltage from 0 to maximum will cause the output to vary from 0 to 100% of the model rating. Adjust the programming signal to zero.
4. Turn the power supply ON.
5. Set the front panel LOCAL/REMOTE switch to the REMOTE position and adjust the external programming voltage source. By pressing the V&I PREVIEW button and observing the front panel ammeter reading, the external control can be adjusted to the desired setting.
S1 Switch Settings
S1-2 OPEN = 0­5V S1-2 CLOSED = 0­10V

Figure 4­6. Programming Output Current Limit with a 0­5 VDC or 0­10 VDC Source

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Programming Output Current Limit with a 0­5k Ohm Resistance
1. Set S1-2, the rear panel DIP Switch, UP, in the open position for 0­5k ohm programming range.
2. Connect pins 10 (current programming input/positive) and 22 (1mA current source for current control) to the counter­clockwise end of the potentiometer and connect the tap and clockwise end of the potentiometer to pin 12 (return). Adjusting the resistance from zero to maximum will vary the output voltage from 0 to 100% of the model rating. Adjust the programming signal to zero.
3. Turn the power supply ON.
4. Set the front panel LOCAL/REMOTE switch to the REMOTE position and adjust the external programming resistance. By pressing the V&I PREVIEW button and observing the front panel ammeter reading, the external control can be adjusted to the desired setting.

S1 Switch Settings S1-2 OPEN = 0­5K

Figure 4­7. Programming Output Current Limit with a 0­5k Ohm Resistance

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4.3.4 Remote Programming Only the Output Voltage or Current Limit
The front panel REMOTE/LOCAL switch allows you to switch back and forth between remote and local programming signals for all three programming inputs of Voltage, Current, and OVP. When operation is desired for programming only the output voltage and/or current limit without the other, or to leave the OVP control on the front panel, follow the procedures below:
Remote Programming of the Output Voltage Only
For remote programming of output voltage only:
1. Turn off power to the supply.
2. Connect a programming source to remote programming connector J3 between pins 9 (voltage programming input/positive) and 12 (return).
3. Connect a jumper between remote programming connector pins J3-20 and J3-21 for external control of output voltage.
4. Adjust the external programming signal to zero.
5. Switch the ENABLE/STANDBY switch to STANDBY.
6. Turn the power supply ON.
7. Set the front panel LOCAL/REMOTE switch to the LOCAL position and adjust the external programming signal. By pressing the V&I PREVIEW button and observing the front panel voltmeter reading, the external control can be adjusted to the desired setting.
8. Adjust the current and OVP controls to the desired settings with the front panel controls
9. Switch the ENABLE/STANDBY switch to ENABLE.
10. The output voltage is now remotely programmed with local control of the current limit and OVP settings.
S1 Switch Settings
S1-1 OPEN = 0­5V S1-1 CLOSED = 0­10V

Figure 4­8. Programming Output Voltage Remotely, Local Control of Current Limit/OVP

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Remote Programming of the Current Limit Only
CAUTION! Always remove J3 mating connector from supply before soldering.

For remote programming of current limit only: 1. Turn off power to the supply.
2. Connect a programming source between pins 10 (current limit programming input/positive) and 12 (return).
3. Connect a jumper between remote programming connector pins J3-22 and J3-23 for external control of the current limit.
4. Adjust the external programming signal to zero.
5. Switch the ENABLE/STANDBY switch to STANDBY.
6. Turn the power supply ON.
7. Set the front panel LOCAL/REMOTE switch to the LOCAL position and adjust the external programming signal. By pressing the V&I PREVIEW button and observing the front panel ammeter reading, the external control can be adjusted to the desired setting.
8. Adjust the voltage and OVP controls to the desired settings with the front panel controls.
9. Switch the ENABLE/STANDBY switch to ENABLE.
10. The current limit setting is now remotely programmed with local control of the output voltage and OVP settings.
S1 Switch Settings
S1-2 OPEN = 0­5V S1-2 CLOSED = 0­10V

Figure 4­9. Programming Output Current Remotely, Local Control of Voltage Limit/OVP

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4.4 Using Over Voltage Protection (OVP)
The OVP circuit allows for protection of the load in the event of a remote programming error, an incorrect voltage control adjustment, or a power supply failure. The protection circuit monitors the output voltage and will reduce the output current and voltage to zero whenever a preset voltage limit is exceeded. The preset voltage limit, also called the set point or trip level, can be set either in local programming mode from the front panel or by remote programming through the J3 connector on the rear panel.
The red OVP LED on the front panel will light up when the OVP circuit has been activated.
4.4.1 Front Panel OVP Operation
In local programming mode, the OVP set point can be checked at any time by pressing the OVP PREVIEW switch: The OVP set point is the value displayed on the digital voltmeter.
To set the trip level from the front panel: 1. Adjust the power supply output to zero volts.
2. Press the OVP PREVIEW switch to observe the OVP set point on the voltmeter display.
3. Turn the OVP SET potentiometer until the desired set point is reached. Release the OVP CHECK switch.
4. Increase the power supply output voltage to check that the power supply shuts off the output at the selected set point.
4.4.2 Resetting the OVP Circuit
To reset the OVP circuit after it has been activated: 1. Reduce the power supply’s output voltage setting to below the OVP set point.
2. Press the ENABLE/STANDBY switch to the STANDBY position.
3. Return the ENABLE/STANDBY switch to the ENABLE position and resume normal operation. or
1. Reduce the power supply’s output voltage setting to below the OVP set point.
2. Turn the power supply OFF using the POWER switch, then turn it back ON again.

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4.4.3 Programming OVP w ith an External Voltage Source
CAUTION! Always remove J3 mating connector from supply before soldering.

Programming OVP with a 0­5 VDC or 0­10 VDC Source
1. Set S1-3, the rear panel DIP Switch, UP, in the open position for 0­5 VDC programming range.
2. Set S1-3, the rear panel DIP Switch, DOWN, in the closed position for 0­10 VDC programming range.
3. Connect the external programming source between pins 3 (OVP programming input/positive) and 12 (return). Varying the programming voltage from zero to maximum will cause the OVP setting to vary from approximately 0 to 110% of the model rating.
4. Turn the power supply ON and adjust the external voltage programming to zero.
5. Set the front panel LOCAL/REMOTE switch to the REMOTE position and adjust the external OVP programming source voltage. By pressing the OVP PREVIEW button and looking at the front panel voltmeter setting, the external control can be adjusted to the desired value.
6. Slowly increase the external output voltage programming signal until the red OVP LED lights and the power supply shuts down.
S1 Switch Settings
S1-3 OPEN = 0­5V S1-3 CLOSED = 0­10V

Figure 4­10. Remote Programming of OVP with a 0­5 VDC or 0­10 VDC External Voltage Source

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Programming OVP with a 0­5k Ohm Resistance
1. Set S1-3, the rear panel DIP Switch, UP, in the open position for 0­5 k ohm programming range.
2. Connect the external programming source between pins 3 (OVP programming input/positive) and 12 (return). Varying the programming voltage from zero to maximum will cause the OVP setting to vary from approximately 0 to 110% of the model rating.
3. Connect pins 3 (OVP programming input/positive) and 16 (1mA current source for OVP control) of J3 to the counter­clockwise end of the potentiometer and connect the tap and clockwise end of the potentiometer to pin 12 (return). Adjusting the resistance from zero to maximum will vary the output voltage from approximately 0 to 110% of the model rating.
4. Turn the power supply ON and adjust the external voltage programming input to zero.
5. Set the front panel LOCAL/REMOTE switch to the REMOTE position and adjust the external OVP programming source voltage. By pressing the OVP PREVIEW button and looking at the front panel voltmeter setting, the external control can be adjusted to the desired value.
6. Slowly increase the external output voltage programming signal until the red OVP LED lights and the power supply shuts down.
S1 Switch Settings
S1-3 OPEN = 0­5K

Figure 4­11. Remote Programming of OVP with a 0­5k ohm Resistance

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4.5 Using the Shutdow n Function
The Shutdown function is used to disable or enable the supply’s output voltage and current. It can be used to allow adjustments to be made to either the load or the power supply without shutting off the entire supply. This function may be activated from the front panel at any time by using the STANDBY switch. It can also be activated via remote programming, using positive or negative logic, with a TTL compatible input or higher DC signal.

4.5.1 STANDBY Sw itch
The STANDBY switch is a two­position rocker switch located on the power supply’s front panel. See the front panel diagram in Section 2. When in the STANDBY position, the shutdown circuit is activated, and the output voltage and current are programmed to zero. Pushing the switch to the ENABLE position allows normal power supply operation to resume.

4.5.2 Programming the Shutdow n Function
The Shutdown circuit uses a 5­24 VDC input to disable or enable the power supply output. Connections for the input signals are made on connector J3. Rear panel DIP switch S1-6, determines whether positive or negative logic for the signal is used. The input lines for the Shutdown circuit are optically isolated and can therefore be used by input sources with a voltage differential of up to +/­ 150 VDC.
External Wiring
Use 20 to 24 AWG wiring when making connections to the J3 connector. Keep wiring as short as possible.
TTL Shutdown
To activate the Shutdown function using a DC input:
1. Turn off the power supply.
2. Connect the signal source to J3 pin 14 (Remote Shutdown Input/positive) and J3 pin 2 (Return for Shutdown Input) on the J3 connector on the rear panel. See Figure 4­12.
3. Set internal switch SW1-6 to select the desired circuit logic as defined in the following table.

Switch S1-6 Setting UP/Open = Positive Logic DOWN/Closed = Negative Logic

Signal Level
High Low
High Low

Output Condition
OFF ON
ON OFF

The red S/D (Shutdown) LED on the front panel lights up when the Shutdown circuit is activated.

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Figure 4­12. Using Shutdown with a DC Input (Positive Logic)

4.5.3 Shutdow n Application ­ Contact Closure
An external relay, whether normally open or normally closed, may be used to activate the Shutdown circuit. Either positive or negative logic may be used.
To activate the Shutdown function using an external relay:
1. Turn off the power supply.
2. Connect one side of the external relay to pin 15 (+5 VDC Auxiliary Output) on connector J3. Connect the other side of the relay to J3-pin 14 (Remote Shutdown Input). Also connect pin 2 (Shutdown Return) to pin 6 (Status Indicator Return). See Figure 4­13 through Figure 4­16.
3. Set rear panel DIP switch S1 to select the desired circuit logic as defined in the following table.

Relay Normally Open Relay

Switch S1-6 Setting UP­Open (Positive Logic) DOWN­Closed (Negative Logic)

Normally Closed Relay

UP­Open (Positive Logic) DOWN­Closed (Negative Logic)

Relay Coil State Energized De-energized Energized De-energized Energized De- energized Energized De-energized

Output OFF ON ON OFF ON OFF OFF ON

The red S/D (Shutdown) LED on the front panel lights up when the Shutdown circuit is activated.

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Figure 4­13. Using Shutdown with Contact Closure of a Normally OPEN Relay (S1-6 Up)

Figure 4­14. Using Shutdown with Contact Closure of a Normally OPEN Relay (S1-6 Down)

Figure 4­15. Using Shutdown with Contact Closure of a Normally CLOSED Relay (S1-6 Up)

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Figure 4­16. Using Shutdown with Contact Closure of Normally CLOSED Relay (S1-6 Down)

4.6 Remote Monitoring

4.6.1 Readback Signals
Calibrated readback signals for remote monitoring of the output voltage and current are available via connections at the J3 connector on the rear panel. Rear panel DIP switch S1 settings allow you to select either a 0­5 VDC or a 0­10 VDC range for the output. See Section 4.2 Configuring for Remote Programming, Sensing, and Monitoring for more information about making these connections.
The following table shows the required pin connections and switch settings for remote monitoring of readback signals with 0­5 VDC or 0­10 VDC outputs. Use shielded­twisted pair wiring (20 to 24 AWG) and ground the shield to J3 connector pin 6 or to the chassis via one of the J3 connector screws. The readback signal represents 0 to 100% of the model­rated output.

Readback Signal
Voltage Monitor

J3 Connections Signal (+) Return (­)

Pin 19

Pin 12

Current Monitor

Pin 7

Pin 12

Switch S1 Settings Switch # Setting

S1­4

UP DOWN

S1­5

UP DOWN

Output Signal: Range
0­5 VDC 0­10 VDC
0­5 VDC 0­10 VDC

CAUTION! Always remove J3 mating connector from supply before soldering.

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4.6.2 Status Indicators
Status indicators for thermal shutdown, OVP circuit, programming mode, and operating mode are available via connections on the J3 connector on the rear panel.
The following table shows the indicator signals, the J3 connector pin at which they are available, an approximation of the signal magnitude, and the source impedance through which the signal is fed. Use 20 to 24 AWG wiring.

Indicator Signal / Alternate State
Overtemperature Shutdown / Normal Operation
OVP Circuit Activated / OVP Circuit Not Activated
Remote Programming Mode / Local Programming Mode
Voltage Mode Operation / Current Mode Operation

J3 Connections Signal (+) Return (­)

Pin 18 Pin 18

Pin 6 Pin 6

Pin 17 Pin 17

Pin 6 Pin 6

Pin 4 Pin 4

Pin 6 Pin 6

Pin 5 Pin 5

Pin 6 Pin 6

Signal Voltage
+5V 0V
+5V 0V
+5V 0V
+5V 0V

Source Impedance
1k ohms 1k ohms
1k ohms 1k ohms
1k ohms 1k ohms
1k ohms 1k ohms

4.7 Using Multiple Supplies
DLM­E Series power supplies of the SAME MODEL may be operated with outputs in series or in parallel to obtain increased load voltage or increased current. Split supply operation allows two positive or a positive and a negative output to be obtained. The power supply output may be biased up to a maximum of 150 VDC with respect to the chassis.

WARNING! Use extreme caution when biasing the output relative to the chassis due to potentially high voltage levels at the output and J3 terminals.
Do not attempt to bias program/monitor signal lines on the J3 connector relative to the power supplies positive output. The signal returns on the J3 program/monitor connector are at the same potential as the power supply return bus bar in a standard unit. Using the Isolated Programming Interface option allows control from a programming source biased relative to the supply’s output. Contact factory for additional details.
4.7.1 Configuring Multiple Supplies for Series Operation
Series operation will obtain a higher voltage from a single output using two or more supplies. Connect the negative (­) output terminal of one supply to the positive (+) output terminal of the next supply. See Figure 4­17. The total voltage available is the sum of the maximum voltages of each supply (add voltmeter readings). The maximum allowable current for a series string of power supplies is the model rated output current of a single supply in the string.
Note: The maximum allowable sum of the output voltages is 300 VDC. This is limited by the voltage rating of certain internal components. See Section 1 for maximum voltage rating.

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CAUTION! Remote sensing must not be used during series operation.

CAUTION! The remote programming input is internally referenced to the supply’s negative output. Do not connect any remote programming input lines on the J3 connector to the supply’s positive output.

Figure 4­17. Series Operation of Multiple Supplies (Local sense lines shown are default J11 to busbar connections)
4.7.2 Configuring Multiple Supplies for Split Supply Operation
Split supply operation uses two power supplies to obtain two positive voltages with a common ground, or to obtain a positive­negative supply.
To obtain two positive voltages, connect the negative output terminals of both supplies together. The positive output terminals will provide the required voltages with respect to the common connection. See Figure 4­18.
To obtain a positive­negative supply, connect the negative output terminal of one supply to the positive output terminal of the second supply. The positive output terminal of the first supply then provides a positive voltage relative to the common connection while the negative output terminal of the second supply provides a negative voltage. The current limits can be set independently. The maximum current available in split supply operation is equal to the model­ rated output of the supplies used. See Figure 4­19.

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CAUTION! To prevent possible damage to the supply, do not connect the remote program return line of the negative supply to the common connection.

Figure 4­18. Split Supply Operation of Multiple Supplies (Two Positive Voltages) (Local sense lines shown are from J11 to busbars)

Figure 4­19. Split Supply Operation of Multiple Supplies (Positive­Negative Supply) (Local sense lines shown are from J11 to busbars)

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4.7.3 Configuring Multiple Supplies for Parallel Operation
Parallel operation is used to obtain a higher current output supply using up to five units. The DLM­E supplies are designed to be easily paralleled with current sharing between units with the use of a simple cable between supplies. See Figure 4­20.
Notes:
1. Set the rear panel switch S1­7 down on the Slave unit(s) only. This allows for full control of the output voltage, current, and OVP trip level through one Master supply.
2. To control the slaves, plug the Master/Slave cable into J12 of the Master supply and into J13 of the first Slave supply.
3. Plug an identical cable into J12 on this slave and connect to J13 on any subsequent Slave supplies as required until all supplies in the Master/Slave set have a cable plugged into either J12 or J13 or both.
4. Ensure that all of the outputs of the positive terminals (+) and negative terminals (­) are also connected in parallel. Refer to Section 2.8 for a discussion on the proper method for connecting to the load.
5. The total current available is the sum of the maximum currents of each supply. Each supply will read back the portion of current that it is supplying to the load and these must be added together to get the total load current.
CAUTION! To prevent internal damage, ensure that the Master/Slave Parallel Output Enable switch S1­7 is Up on the Master supply and Down on all Slaves. There can be only one Master supply!

Pin Number 1 2 3 4 5 6

Function Parallel OVP Control Parallel Current Command Parallel Command Return (­) Parallel Voltage Control Parallel Output Command Programming/Monitor Return (­)

Voltage Level 0­5 V 0­7V 0V 0­5V 5V 0V

Table 4­3. J12, J13 Connectors­Parallel Port Function and Pinout

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Figure 4­20. Parallel Operation of Multiple Supplies (Local sense lines shown are from J11 to busbars)
4.8 Front Panel Lockout
The front panel lockout mode enables a user to disable the front panel controls when the unit is being programmed exclusively through the J3 remote input connector. To activate the front panel lockouts, push the front panel LOCAL/REMOTE switch to the REMOTE position with the S1 rear panel Dip switch S1­8 in the down or closed position. Once the lock function has been activated, it disables local control for all output control functions, except the AC power switch, which remains under front panel control and lights the front panel LOCK LED.
4.9 Fault Alarm Signal
Active high state in converter indicates over temperature, over voltage protection (OVP), or internal shutdown. The Fault signal is the summary of protection. Circuits return J3-6 (Status Indicator Return). This terminal goes to low state when the converter is operating under normal conditions.

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SECTION 5

MAINTENANCE AND TROUBLESHOOTING

5.1 Periodic Service
This section provides periodic maintenance, calibration and troubleshooting information. Except for periodic cleaning and calibration, no routine service is required. Whenever a unit is removed from service, it should be cleaned, using denatured or isopropyl alcohol or an equivalent solvent on the metal surfaces, and a weak solution of soap and water for the front panel. Low pressure compressed air may be used to blow dust from in and around components on the printed circuit boards.
5.2 Troubleshooting
Units requiring repair during their warranty period should be returned to the manufacturer for service. Unauthorized repairs performed during the warranty period may void the warranty. Please refer to the Warranty page in this manual for terms and contact information.
CAUTION! Potentially lethal voltage exists in the power circuit and the output of high voltage models. Filter capacitors store potentially dangerous energy for some time after power is removed. Only experienced technical personnel should make repairs. Be sure to isolate the power supply from the input line with an isolation transformer when using grounded test equipment such as an oscilloscope in the power circuit.
5.2.1 Preliminary Checks
If the power supply displays any unusual or erratic shut the power supply off immediately and disconnect it from the AC power source. Check all loads, programming and monitoring connections and circuits. Check the AC input for correct voltage and frequency. Correct any problems found and retest the system. If no problems are found or the unit fails to operate correctly upon re­testing proceed with internal troubleshooting as described below.

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5.2.2 Troubleshooting at the Operation Level
Use the checks in Table 5­1 to ensure the DLM­E Series power supply is configured and connected for default operation at the front panel. If you need any further troubleshooting, call customer service.

Symptom No output and the display is blank No output but the display lights
Output not adjustable
Output voltage fluctuating or regulation poor
Output oscillating

Check Is input voltage within specified range? Power switch ON? Internal circuit? OVP LED lit? Front panel S/D LED lit? OTEMP LED lit? Current limit set to zero? Voltage control set to zero? REM LED lit? Is front panel ON LED lit?
Internal circuit. Is unit in current limit mode? (Green Current Mode LED lit.)
Is unit in REMOTE mode? (Green REM LED lit.) Is unit in LOCK mode? (Green LOCK LED lit.) Is unit at maximum voltage or current limit? Is unit at current limit?
Is input voltage within specified range? Are sense lines connected? Is unit under remote analog control? Internal circuit. Internal circuit.

Further Checks and Corrections Connect to appropriate voltage source. See Section 2.6. Turn on power. See your service technician. See Section 2.4.1. See Section 2.4.1. See Section 2.4.1. See Section 3.2.2. See Section 3.2.2. See Section 4.3. Connect unit to AC supply in specified range. See Section 2.4.1. See your service technician. Turn current knob clockwise to increase current limit. Reduce load if current is at maximum. See Section 3.2.1. See Section 4.3.
See Section 4.8.
Reduce load for lower voltage or current requirement. Increase current limit setting or reduce load. See Section 3.2.1. Connect to appropriate AC voltage source. See Section 2.6. See Section 2.8 and Section 3.3. Ensure program source is stable.
See your service technician. See your service technician.

Table 5­1. User Diagnostics

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5.3 Calibration
Calibration of the output voltage, current, or OVP is accomplished using multiturn trimpots. Table 5­2 gives the location, function, and effect of each potentiometer.
Calibration is performed at the factory during testing. Recalibration should be performed annually and following major repairs. With the cover in place, calibration should be done through access holes in the cover or front panel. See Figure 5­1.

Figure 5­1. Potentiometer Locations

Location Function

Adjustment Procedure

Top Cover Output Voltage

Clockwise rotation increases output voltage setting

Top Cover Output Current

Clockwise rotation increases output current setting

Top Cover Front Panel Voltmeter

Clockwise rotation increases voltage meter reading

Top Cover Front Panel Current Meter Clockwise rotation increases current meter reading

Front Panel OVP

Clockwise rotation increases OVP shutdown setting

Table 5­2. Potentiometer Adjustment Procedures

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5.4 Ordering Parts
Do not substitute parts without first checking with the manufacturer’s Service Department. Parts may be ordered from the factory , using the following information:
AMETEK Programmable Power 9250 Brown Deer Road San Diego, CA 92121-2294 Toll free in North America: 1-800-733-5427 Direct: 858-450-0085 Fax: 858-458-0267 E-mail: sales@programmablepower.com www.programmablepower.com
Note: When ordering parts please include the model number and serial number of the unit with your order.

5.5 Fuse Ratings
Table 5­3 provides a listing of Fuse Ratings.

Reference Designator

Fuse Type

F1, 2, 3 (Rear Panel) Fast Acting, AC

F1, 2, 3 (Rear Panel) Fast Acting, AC

F1, 2, 3 (Rear Panel) Fast Acting, AC

F1 (Inside Chassis)

Fast Acting, DC

F5, 6

Slow Blow, AC

F7

Fast Acting, DC

Rating F, 25A, 600V F, 10A, 600V F, 8A, 600V F, 15A, 600V 2A, 250V 0.5A, 125V

Size 13/32″ x 1½ 13/32″ x 1½ 13/32″ x 1½ 13/32″ x 1½ 5 x 20 mm Leaded PCB

Option Std M1 M2 — — —

Table 5­3. Fuse Ratings

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References

• AMETEK Programmable Power | AC & DC Supplies, eLoads, and Test Systems
• Manual-Hub.com – Free PDF manuals!

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