KORAD KWR Series Wide Range Programmable DC Power Supply User Manual

KORAD KWR Series Wide Range Programmable DC Power Supply

Product Features

• 0-30V/0-60V, 0-30A/0-15A, 300W wide range output
• 5-digit current and voltage display with high accuracy
• The voltage output slope can be set
• Convenient fast recall
• The OCP & OVP parameters can be set
• Various control interfaces: LAN, USB, RS232 & USB
• Supporting the stand-alone dynamic output mode
• External trigger and external switch interface

Product Series

• KWR102 0-30V 0-30A 300W
• KWR103 0-60V 0-15A 300W

FUSE

• To ensure fire protection, replace the fuse only with the specified type and rating.
• Disconnect the power cord before fuse replacement.
• Make sure the cause of the fuse blowout is confirmed before fuse replacement.

Front Panel Description

• OVP function and External trigger function
• OCP function and Remote compensation function
• Key lock function and Buzzer setting function
• ON/OFF output and Dynamic output function
• RS485 ID setting function
• Voltage and current priority function
• Ml-MS quick recall/storage function and Dynamic output function
• Press: turn off the flashing while setting
  • Press and hold: set the slope and press again to exit the setting. And the unit is V/100uS.
• Front output terminal: the max output current of the secondary terminal is 10A. And the output of the power supply will be automatically cut off if the current exceeds 10A.

Rear Panel Description

Operating Instruction

1. Ml-MS quick recall/storage function

2. Ml-MS quick recall function
   Instruction: Short press Ml-MS keys to quickly recall the contents stored in 1-5.

3. Ml-MS quick storage function
   Instruction: Adjust the stored voltage and current value and long press the M key to store the current value in the memory of the selected M key.

4. OVP function

5. Set the OVP value
   Instruction: Short press OVP to activate the OVP value setting function, adjust the OVP value to be set through the knob and the VSET key, and short press the OVP to save and exit.

6. Turn on/ off the OVP function
   Instruction: When the OVP is at the OFF state, short press the OVP key and then short press the ON/OFF key to enable this function. When the OVP is at the ON state, short press the OVP key and then short press the ON/OFF key to disenable this function.

7. OCP function

8. Set the OCP value
   Instruction: Short-press the OCP to activate the OCP value setting function, adjust the OCP value to be set through the knob and the ISET key, and short- press the OCP to save and exit.

9. Turn on/ off the OCP function
   Instruction: When the OCP is in the OFF state, short press the OCP key and then short press the ON/OFF key to enable this function. When the OCP is at the ON state, short press the OCP key and then short press the ON/OFF key to disenable this function.

10. External trigger function
    Instruction: Long press the OVP key until there is a decimal point shown in the right corner of the last digital I code of the voltage display digital I tube, meaning that the external trigger function is activated. At this time, the power output can be turned on by shorting two rear interfaces of TRIG.

11. Remote compensation function
    Instruction: Long press the OCP key until there is a decimal point shown in the right corner of the last digital code of the current display digital tube, meaning that the remote compensation function is activated. At this time, the rear SEN SE terminal can be used as the voltage compensation terminal.

12. Key lock function
    Instruction: Long press the LOCK key that can be locked when the LOCK lamp is lit, and repeat this action to unlock the key.

13. Bozzer setting function
    Instruction: Short press the LOCK key to turn on or off the buzzer.

14. RS485 IB setting function
    Instruction: Long press the VSET to activate the RS485 ID setting function, turn the knob until the required ID occurs, and long press the VSET to save and exit.

15. Voltage and current slope setting function
    Instruction: Long press the knob to activate the voltage and current slope setting function, turn the knob to increase or decrease the value, select the voltage and current slope through VSET and ISET, and long press the knob to exit the setting function, with unit/ l00us.

16. Dynamic output function

17. Dynamic setting function
    Instruction:

  *  **Step 1:** Long press the ON/OFF to activate the dynamic setting function. At this time, Ml-MS key indicators are all off and Ml-MS show digits 1-5. Set the dynamic steps with the Ml-MS digit combination.
  *  **Step 2:** When Ml-MS indicators are all off, Step 0 starts. At this time, the voltage is displayed as a dynamic cycle number and the current is displayed as a dynamic step. Change the value through the knob, and switch to the different item through VSET and ISET.
  *  **Step 3:** Press Ml. At this time, Step 1 starts when the M1 indicator is lit. Set the value of the first step. Change the voltage/ current value through the knob and switch to the different item through VSET and ISET, press the knob to switch to the required voltage slope and time. Change the value through the knob, and switch to the different item through VSET and ISET.
  *  **Step 4:** Press Ml to close Ml and press M2 to set the value required in Step 2, with the setting method the same as that used in Step 2. The Ml-MS key combination is required when the Step number is greater than 5. For example, MS+Ml is used in the Step 6. MS+M4+M3 is used in Step 12.
  *  **Step 5:** Long press ON/OFF after setting to save the set value and exit the setting function.
2.  **Dynamic Setting Recall**  

Instruction: Short press MS and turn the knob to increase, so that the dynamic function can be recalled. Turn on ON/OFF for output.

11. Voltage and current priority function
    Instruction: Long press ISET to activate the voltage and current priority setting function. Turn the knob to set Oas voltage priority and set 1 as current priority, and long press ISET to save and exit.

12. Communication with PC
    Please refer to the communication protocol file.

The External Size of the Power Supply

Characteristics of the Voltage Output

• The KWR power supplies are regulated DC power supplies with a high voltage and current output. These operate in CC or CV mode within a wide operating range limited only by the output power.
• The operating area of each power supply is determined by the rated output power as well as the voltage and current rating.
• When the power supply is configured so that the total output (current * voltage output) is less than the rated power output, the power supply functions as a typical constant current, constant voltage power supply.
• If however, the power supply is configured such that the total output (current* voltage output) exceeds the rated power output, the effective output is limited to the power limit of the unit. In this case, the output current and voltage then depend purely on the load value.
• Below is a comparison of the operating areas of each power supply.

Specifications

Note: the specifications below are tested under the conditions of temperature 25°C ± 5°C and the warm-up for 5 minutes.

Note: Specifications are subject to change without notice.

Communications

COM setting
Set up the COM port inside the PC according to the following list.

• Baud rate: 9600/19200/38400/57600/115200 (the factory baud rate of the power supply: 115200)
• Parity bit: None
• Data bit: 8
• Stop bit: 1
• Data flow control: None

RS485 communication commands add the address after the command letters. Take ID equalling 5 for example:

• ISET05:10.5
  Set the current to 10.5A

• ISET05?
  Query the current setting value of the current

• VSET05:12.5
  Set the voltage to 12.5V

• VSET05?
  Query the current setting value of the voltage

• IOUT05?
  Query the current output value of the current

• VOUT05?
  Query the current output value of the voltage

• ВЕЕР05:
  BEEP:1 Turn on the buzzer, BEEP:0 turn off the buzzer

• OUT05:
  OUT:1 turn on the output, OUT:0 turn off the output

• OUT05?
  Returning the output status of the machine, 0 is output OFF while 1 is output ON.

• STATUS05?
  Query the device status BIT0:CC/CV, BIT1: output, BIT2:V/C priority, BIT4:the buzzer, BIT5: LOCK, BIT6:OVP status, BIT7:OCP status.

• *IDN05?
  Query the serial No. of the device

• RCL05:5
  Recall MS as the current value (the value is 1- 5)

• RCL05:6
  Recall LIST dynamic value

• SAV05:5
  The current value is stored in MS (the value is 1- 5)

• OCP05:12.5
  Set the OCP current value to be 12.5A

• OCP05: ON/OFF
  open/close OCP

• OCP05?
  Query the OCP current value

• OVP05:15.5
  Set the OVP voltage value to be 12.5A

• OVP05: ON/OFF
  open/close OVP

• OVP05?
  Query the OVP voltage value

• VSLOPE05:31.5
  Set the output voltage slope to 31.5V/l00uS

• VSLOPE05?
  Query the output voltage slope

• ISLOPE05:1.5
  Set the slope of the output current to be 1.5A/100uS

• ISLOPE05?
  Query the set output current slope
  LIST0500:25, 6
  Set the times of repetitions of LIST to 25 and LIST sets 6 dynamic values

• LIST0500?
  Query the times of repetitions of LIST and the number of
  dynamic values

• LIST0502:25.6, 2.5, 6.5, 5.8
  Set the second dynamic value of LIST: voltage to be 25.6V, current 2.SA, slope 6.SV/l00uS and time 5.8sQuery the voltage, current, slope and time of the second dynamic value of LIST

• LIST0502?
  Query the voltage, current, slope and time of the second dynamic value of the LIST

• EXIT05:
  EXITl: 0 turn off the external trigger, EXIT 1:1 turn on the external trigger

• EXIT05?
  Query the status of the external trigger

• COMPO5:
  COMPl:0 turn off the external compensation, COMP 1:1 turn on the external compensation

• COMP05?
  Query the status of the external compensation
  LOCK05:
  LOCK:0 unlock the buttons, LOCK:1 lock the buttons

• VASTEP05:1, 30, 0.1, 1
  Starting voltage 1V, ending voltage 30V, each step 0.1V and the interval 1s

• VASTOP0S
  Voltage stops automatically

• VSTEP05:1
  Set the step voltage to 1 V

• VUP05
  The step voltage set by the voltage increase

• VDOWN05
  The step voltage set by the voltage decrease

• IASTEP0S:1, 3, 0.1, 1
  Staring current 1A, ending current 3A, each step 0.1A and interval 1s

• IASTOP05
  Current stops automatically

• ISTEP05:1
  Set the step current lA

• IUP05
  The step current set by the current increase

• IDOWN05
  The step current set by the current decrease

• PRIORITY05:1
  Set the priority of voltage and current, O is voltage priority while 1 is current priority.

Contact Information

DONGGUAN KORAD TECHNOLOGY CO., LTD.

• Address: F9, Building D2, Kechuang Center, Songshan Lake Intelligent Valley, No. 7 Yanhe North Road, Liaobu Town, Dongguan City, Guangdong Province.
• Tel: +86-769-81111584
• Fax: +86-769-81111804
• E-mail: krissy@koradtechnology.com
• www.koradtechnology.com
• www.korad.com.cn.

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