KORAD KC Series 4-Channel Programmable Power Supply User Manual

Product Introduction

This section provides an overview of the KORAD KC Series 4-Channel Programmable Power Supply, including its specifications, main features, and accessories.

Specifications and Series

Main Features

• Four independent output channels.
• LIST programmable output sequence, supporting 100 consecutive different settings.
• LIST mode and normal mode can be switched automatically with one button.
• Oscilloscope function for simultaneous display of voltage and current on four channels.
• Oscilloscope screen capture via USB access to U disk.
• U disk import and export of output table data, editable by computer in EXCEL.
• Low chopping and low noise.
• High resolution and precision with 5-digit display.
• Remote measurement function.
• External trigger control and switch control.
• Supporting OVP (Over Voltage Protection), OCP (Over Current Protection), and temperature protection.
• Built-in USB/RS232/GPIB/LAN communication interfaces.

Temperature Coefficient

Accessories

• User manual *1
• Power cord *1
• CD *1
• USB cable *1
• RS232 cable *1
• 10A test leads *4

Weight and Dimension

Weight and Dimension (mounting dimension, including the machine feet): 430mm(W)*94mm(H)*450mm(D); KC3405: 18.5kg & KC6403: 19.8kg

Parameters Table

Front Panel Introduction

The front panel features a USB port, a display screen, voltage and current adjustment knobs, direction adjustment controls, function buttons, and number buttons.

The display shows the status of four channels (CH1-CH4), indicating whether they are OFF or in Constant Voltage (CV) mode. It displays set voltage (Vset), actual output voltage, set current (Iset), actual output current, output power, and the status of Over Voltage Protection (OVP) and Over Current Protection (OCP). Buttons for CH1/LIST, CH2/LIST, CH3/LIST, CH4/LIST, USB, and Configure are located below the display.

Key components and their functions:

• CH1 channel indication: Refers to the constant output mode of the channel. When entering the output mode of dynamic LIST, it becomes LIST-1.
• Output voltage indication: Refers to the actual output voltage value of CH1.
• Output current indication: Refers to the actual output current value of CH1.
• Output power indication: Refers to the actual output power value on CH1.
• OVP and OCP setting and switch status: Shows "OFF" when OCP and OVP are off, and indicates the set value when OVP and OCP are ON.
• CH1 set value of voltage and current.
• Output ON/OFF indication, and constant voltage and constant current mode indication of channel output.
• CH1 constant output and button indication of dynamic LIST output.
• CH2 constant output and button indication of dynamic LIST output.
• CH3 constant output and button indication of dynamic LIST output.
• CH4 constant output and button indication of dynamic LIST output.
• USB flash disk insertion indication: When a USB flash disk is inserted, the logo will appear as a USB font.
• System configuration and button indication of function configuration.

Rear Panel Introduction

The rear panel provides connectivity and cooling for the power supply.

Key connections and components on the rear panel:

•   4 channel voltage output terminals: These are the main output terminals for each of the four channels. GND is the earth terminal.
•   External control port: These ports allow for external control and triggering.
  • Common grounding terminal.
  • CH3 remote compensation terminal.
  • CH4 remote compensation terminal.
  • CH3 external trigger.
  • CH4 external trigger.
  • CH1 remote compensation terminal.
  • CH2 remote compensation terminal.
  • CH1 external trigger.
  • CH2 external trigger.
•   AC power input port: Standard AC power connection.
•   Vent: Cooling vents for heat dissipation.
•   USB communication port: For connecting to a computer or USB storage devices.
•   RS232 communication port: Serial communication port.
• LAN: Local Area Network port for network connectivity.
• GPIB: General Purpose Interface Bus port for instrument control.

The rear panel also indicates port discharge status, e.g., "CH1 Port discharge: ON".

Power Output Mode

The power output can operate in two modes: Constant Output Mode and Dynamic LIST Mode.

• Constant Output: This mode provides a stable constant voltage or constant current output.
• Dynamic LIST Output: This mode allows the output to follow a programmed sequence of voltage and current over time.

Constant Mode Output: A graph showing voltage (V) and current (I) remaining constant over time (T).

Dynamic Output Mode: A graph showing voltage (V) and current (I) changing over time (T) according to a defined sequence.

Operation Instructions

This section details the various operational aspects of the KORAD KC Series power supply.

Keyboard Function

The front panel includes various buttons for operation. The main controls include POWER, channel selection buttons (CH1/LIST to CH4/LIST), USB, and Configure. Below these are shortcut buttons.

Quick-action buttons:

• CH1/LIST - CH4/LIST Buttons: Used to enter the LIST editing mode for channels CH1 through CH4.
• USB Button: Activates the data import and export function.
• Configure Button: Accesses the system configuration settings.

U disk data import and export function

This function allows data to be imported from or exported to a USB flash drive.

1. Insert the USB flash drive into the USB interface on the front panel. A USB plug-in symbol will appear on the display.
2. Press the USB button (or F5) to enter USB mode.
3. The file directory box on the left displays files with CSV extension. The right side is divided into import LOAD and export SAVE sections.
4. Use Left/Right keys to switch between the directory box, channel selection, and storage data selection.
5. Use UP/DOWN keys to switch between the SAVE box and LOAD box.
6. Edit file names using the number buttons.
7. To save data from the U disk to the power supply's storage, select the LOAD box, set the data, and press ENTER.
8. To save files to the U disk, select the SAVE box and press ENTER.
9. Pressing and holding the SAVE button (when a U disk is inserted) takes a screenshot and saves it to the U disk.

The interface shows sections for file directory, data import (LOAD), and data export (SAVE), with options for channel selection.

Set and modify the LIST value

This allows users to create and edit sequences for dynamic output.

Modifying the existing content

1. Use the CH1/List - CH4/List buttons to enter the LIST list.
2. Press the TAB key to switch the cursor between Group and LIST items.
3. Use the knob or UP/DOWN buttons to select the directory line to be modified.
4. Press the OK button; the red voltage table indicates that voltage values can be modified.
5. Use Left/Right keys to cycle through voltage, current, and time tables.
6. Modify the required content using the numeric keypad.
7. Press OK/ENTER to confirm changes.
8. Press the SAV button to save the changes.

Clear the existing values

1. Use the knob or UP/DOWN button to select the directory line to be cleared.
2. Press ESC to clear the current line and subsequent lines.
3. Press the SAV button to save the changes.

The LIST DATA table displays Cycles, Group, Voltage (V), Current (A), and Time (S) for each step in the sequence.

Oscilloscope Function

This function allows visualization of voltage and current waveforms.

1. Press the oscilloscope button on the main interface to enter the oscilloscope function.
2. On the oscilloscope interface, CH1-CH4 status (OFF/CV) and Scan/Move options are displayed.
3. The interface shows voltage and current readings for each channel, along with a time axis.

The oscilloscope interface displays channel status (e.g., CH1:OFF), scan/move controls, voltage and current readings, and a time axis.

Use of Keyboard

The keyboard provides controls for various functions:

• Direction control keys: Used to switch the selected target or adjust data values (increment/decrement).
• TAB: Switches to the next editing project.
• CH1-CH4: Channel selection keys for operating specific channels.
• VSET, ISET: Buttons for selecting voltage or current settings.
• Number setting keyboard: For inputting numerical values.
• Back or operation cancel button: To cancel an operation.
• Data adjustment knob: Used for fine-tuning values.
• Stop button: To stop oscilloscope display and other operations.
• Oscilloscope function switching buttons: Buttons related to oscilloscope features.
• Over-current protection setting button (OCP): To configure OCP.
• Over-voltage protection setting button (OVP): To configure OVP.
• Storage button: For saving data.
• Lock and unlock button: To lock or unlock the keyboard.
• Output ON or OFF button: To control the power output.
• Confirmation button: To confirm settings.

Set constant voltage, constant current and output

This procedure describes how to set the output parameters.

1. In static mode, press the CH1-CH4 keys to select the channel to be modified.
2. Press the VSET/ISET keys to select voltage or current for modification.
3. Input the data parameters directly using the numeric keypad, or adjust using the knob.
4. After setting, press the ON/OFF button to enable constant output.

Static storage/recall function

This function allows saving and recalling preset values.

• Static storage: Save the current preset value in storage spaces 0-9. This can be done for all four channels simultaneously or for individual channels.
• Saving all channels: In static mode, ensure no channel is selected (press ESC if one is selected), then press SAV followed by numbers 0-9 to save to the corresponding storage space.
• Saving a single channel: Select the channel using CH1-CH4 keys, then press SAV followed by numbers 0-9 to save the selected channel's value.
• Recall function: Recall preset values from storage spaces 0-9 for all channels or a single channel.
• Recalling all channels: In static mode, ensure no channel is selected, then press and hold numbers 0-9 to recall data from the current storage space.
• Recalling a single channel: Select the channel using CH1-CH4 keys, then press and hold numbers 0-9 to recall the saved value for that specific channel.

OVP Function

Over Voltage Protection (OVP) settings.

• OVP ON/OFF: Use CH1-CH4 keys to select the OVP channel, then use the OVP button to toggle OVP status (OFF or ON). When ON, the OVP voltage display is active.
• Setting the OVP voltage: Select the OVP channel using CH1-CH4 keys. Use the OVP button to switch to voltage display status. Adjust the OVP value using the Left/Right + UP/DOWN knobs, or enter directly via the number keys and ENTER.

OCP Function

Over Current Protection (OCP) settings.

• OCP ON/OFF: Use CH1-CH4 keys to select the OCP channel, then use the OCP button to toggle OCP status (OFF or ON). When ON, the OCP current display is active.
• Setting the OCP current: Select the OCP channel using CH1-CH4 keys. Use the OCP button to switch to current display status. Adjust the OCP value using the Left/Right + UP/DOWN knob, or enter directly via the number buttons.

Switch between static mode and LIST mode

Users can switch between static and LIST modes using the CH1-CH4 buttons.

LIST selection

Use buttons F1-F4 to enter the LIST list. Select the desired LIST using the rotary knob or UP/DOWN buttons. Press F1-F4 again to return.

System Configuration

This section describes how to access and modify system settings.

1. Press the Configure button to enter the configuration interface.
2. Use the TAB key to switch to the item you need to modify.
3. Use the numeric keyboard to modify input fields, and UP/DOWN keys or the knob to select fields.
4. Press Configure again to save and exit the configuration interface.

The configuration interface allows setting parameters such as Serial number, IP Address, NetMask, Gate Way, IP port, BEEP status, Remote Compensation and External Trigger/Switch settings for each channel, GPIB Address, and Storage Time.

Keyboard LOCK Function

To lock the keyboard, press and hold the LOCK button. To unlock, press and hold the LOCK button again.