UNI-T UTP3000C Series Programmable DC Power Supplies User Manual

UNI-T UTP3000C Series Programmable DC Power Supplies

Specifications

• Model: UTP3000C Series
• Power Supplies: Programmable DC Power Supplies
• Display: 4-bit display
• Output: 3-way output
• Features: Voltage and current overload protection, convenient operation panel, one key storage recall
• Applications: Aging test, electronics circuit behavior test, automated system test
• Suitable for: Education fields, special trade schools, universities, colleges, research labs

Product Usage Instructions

• Instructions on how to set voltage and current values and output them.
• Instructions on how to enter series and parallel modes, and enable/disable output.
• Instructions on how to recall stored values and output them.
• Instructions on how to set over current protection and enable/disable it.
• Instructions on how to set over-voltage protection and enable/disable it.

FAQ

• Q: What are the main features of the UTP3000C Series Programmable DC Power Supplies?
• A: The main features include high precision 4-bit display, 3-way output, voltage and current overload protection, a convenient operation panel, and one key storage recall.
• Q: In which applications can the UTP3000C Series be used?
• A: The UTP3000C Series can be used in aging tests, electronics circuit behavior tests, and automated system tests of different environments.

Safety Overview

• This section discusses the UTP3000C series safety instructions and storage conditions.
• Please read the information below carefully before using the device.

Safety Symbols

These symbols will be presented in the manual or the device.

• Caution
• Risk of Electric Shock
• Ground Terminal

Safety Guide

General

• Do not cover the air inlet and fan outlet.
• Avoid physical impact or improper usage of the device.
• Perform ESD protection for the device
• Do not open the device if you are not a specialist.

AC Input

• AC Voltage Input: 100V/120V/220V/230V, 50/60Hz
• Connect the ground wire to avoid electric shock

Fuses
The fuse models of the device are:

• Make sure the correct fuse is used before powering on.
• Replace all broken fuses with fuses of correct specification and rated value.
• Do not connect the device to the power socket before replacing any fuses to prevent electric shock.
• Find out the reason for the broken fuse before replacing it.

Profile
UTP3000C Series Programmable DC Power Suppliesare high precision 4-bit display devices with 3-way output. It is built with voltage and current overload protection, a convenient operation panel, and one key storage recall. It can be used in aging tests, electronics circuit behavior tests, and automated system tests of different environments. This device is suitable for use in education fields such as special trade schools, universities, colleges, and research labs.

Main Features

• Precise 4-bit voltage & current display
• Settable voltage & current overload protection
• 5 sets of storage recall
• Power-off memory
• Software calibration
• Keyboard lock
• Low operation noise
• Out-of-range temperature protection
• USB and RS232 interface

Front Panel

Rear Panel

Function

Voltage and Current Settings and Output

1. Press, the displayed voltage of CH1 flashes, during which turn the voltage adjustment knob to set the value; Press again to switch from voltage to current, during which turn the current adjustment knob to set the value; keep pressing to switch between voltage and current. When the displayed voltage or current is flashing, press the voltage or current knobto adjust the resolution.
2. After setting the voltage and current values, press to output them. The ON light will also be on; Press again to stop the output and the ON light will be out.

Series and Parallel Settings

1. Series settings:
   Press for 3s to enter into series mode and the SER light will be on. Then CH1 operation is shielded, and CH2 will act as the main control; Press to enable/disable output. The connection method of the series terminal is as below,

2. Parallel Operations:
   Press for 3s to enter into parallel mode and PARA light will be on.
   Then CH1 operation is shielded, and CH2 will act as the main control;
   Press to enable/disable output. The connection method of the parallel terminal is as below,

3. Recall and Output
   No matter under what condition, you can have storage values called by pressing any key from M1 to M5.

4. Over Current Protection Setting
   Press for 3s to enter into Over Current Protection (OCP) setting and the OCP SET light will flash; Press CH1/2 to select the channel, and turn the current knob to adjust the value; Press again for 3s, and the device exists setting and OCP SET light will be off; Then the set current value will be displayed.
   Short press to turn on OCP and OCP light will be on. When the current is larger than the value set in OCP, output will be disabled; Press again to turn off OCP.

5. Over Voltage Protection Setting
   Press 3s to enter into Over Voltage Protection (OVP) setting and the OVP SET light will flash; Press CH1/2 to select the channel, and turn the voltage adjustment knob to adjust the value; Press again for 3s, and the device exists setting and OVP light will be off. Then the set voltage value will be displayed.
   Short press to turn on the OVPandOVP light will be on. When the voltage is larger than the value set in OVP, the output will be disabled. Press again to turn off OVP.

6. Key Lock
   After pressing the voltage knob for 3s, keys are locked; press it again for 3s, keys are unlocked.

7. Turning on/off Buzzer
   After pressing the current knob for 3s, the buzzer will be turned off; Press it again for 3s, the buzzer will be turned on again.

Remote Control

COM setting: set computer COM port setting as below:

• Baud Rate: 9600
• Calibration Bit: None
• Data Bit: 8
• Stop Bit: 1

RS232 Interface Definition

Communication protocol V2.0

Order Format: VSET＜X＞:＜NR2＞

1. VSET: Order Parameter
2. X: Channel
3. :Separator
4. NR2: Parameter

Order Description

1. LOCK＜NR2＞
   Function Description: Lock power supply operation panel
   Example: LOCK1
   Lock power supply operation panel
   Example: LOCK0
   Unlock the power supply operation panel

2. ISET＜X＞: ＜NR2＞
   Function Description: Set current value
   Example: ISET1:2.225
   Set current value as 2.225A

3. ISET＜X＞?
   Function Description: Read the set current value
   Example: ISET1?
   Returns current value

4. VSET＜X＞ : ＜NR2＞
   Function Description: Set voltage value
   Example: VSET1:20.50
   Set voltage value as 20.50V

5. VSET＜X＞?
   Function Description: Read voltage value
   Example: VSET1?
   Return set voltage value

6. IOUT＜X＞?
   Function Description: Read the current output value
   Example: IOUT1?
   Read the set current value

7. VOUT＜X＞
   Function Description: Read voltage output value
   Example: VOUT1?
   Read the set voltage value

8. OUT＜Boolean＞
   Function Description: Turn on/off the power supply output
   Boolean: 0 off; 1 on
   Example: OUT1 Turn on the power supply output

9. BEEP＜Boolean＞
   Function Description: Turn on/off the buzzer
   Example: BEEP1 Turn on the buzzer

10. STATUS?
    Function Description: Read power supply output status
    Contents 8 bits in the following format
    Bit Item Description
    0 CH1 0=CC mode, 1=CV mode
    1 CH2 0=CC mode, 1=CV mode
    2,3,4,5 N/A
    6 Output 0=Off, 1=On
    7 N/A N/A

11. IDN?
    Function Description: Return to device model & factory information
    Example: IDN?
    Contents UNI-T P33XC V2.0 (manufacturer, model name)

12. RCL＜NR1＞
    Function Description: Storage recall by pressing keys from M1-M5

13. SAV＜NR1＞
    Function Description: Storage setting
    Example: SAV1 Stores the panel setting in memory number 1

14. TRACK＜NR1＞
    Function Description: Set series & parallel output
    NR1:0=independent output; 1=series output; 2=parallel output
    Example: TRACK1

15. OCP＜Boolean＞
    Function Description: Turn on over current protection
    Boolean: 0 OFF, 1 ON
    Example: OCP1 Turn on OCP

16. OVP＜Boolean＞
    Function Description: Turn on over-voltage protection
    Boolean: 0 OFF, 1 ON
    Example: OVP1 Turn on OVP

17. OCPSTE: ＜X＞ : ＜NR2＞
    Function Description: Set OCP value
    Example: OCPSTE1: 5.100

18. OVPSTE: ＜X＞ : ＜NR2＞
    Function Description: Set OVP value
    Example: OVPSTE1: 31.00

Technical Index

Note: The measurements below are taken in an environment of 25℃ and after preheating equipment for 5 minutes.

Loading Effect
Voltage| ≤0.01%+3mV| ≤0.01%+5mV
Current| ≤0.1%+5mA| ≤0.1%+10mA
Power Supply Effect
Voltage| ≤0.01%+3mV| ≤0.01%+3mV
Current| ≤0.1%+3mA| ≤0.1%+3mA
Resolution Setting
Voltage| 10mV| 10mV
Current| 1mA| 1mA
Precision Setting (25℃±5℃)
Voltage| ≤0.5%+20mV| ≤0.5%+20mV
Current| ≤0.5%+5mA| ≤0.5%+10mA
Ripple (20-20M)
Voltage| ≤1mVrms| ≤2mVrms
Current| ≤3mArms| ≤3mArms
Output Temperature Coefficient
Voltage| ≤150ppm| ≤150ppm
Current| ≤150ppm| ≤150ppm
Read-back Resolution
Voltage| 10mV| 10mV
---|---|---
Current| 1mA| 1mA
Read-back Temperature Coefficient
Voltage| ≤150ppm| ≤150ppm
Current| ≤150ppm| ≤150ppm
Voltage Rise Delay

Voltage Rise Delay

| ≤100ms

(10% Rated load)

| ≤100ms

(10% Rated load)

Parallel Load Effect
Voltage| ≤0.1%+0.1V
Series Load Effect
Voltage| ≤0.1%+0.1V
CH3 Output Parameter
Voltage Range| 5V
Current Range| 3A
Voltage Precision| ±50mV
Loading Effect| ±50mV
Accessories
User manual, Wire, PC software CD(only for models with interface)
Weight & Size(mm)
252(W)×135(H)×370(D); UTP3303C×6.5kg, UTP3305C×9.1kg

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