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KUAIQU SPPS-D Series Programmable Adjustable Regulated Bench DC Power Supply

KUAIQU Programmable Adjustable Regulated Bench DC Power Supply User Manual

Model: SPPS-D Series

Brand: KUAIQU

1. Introduction

This manual provides detailed instructions for the safe and efficient operation of your KUAIQU Programmable Adjustable Regulated Bench DC Power Supply. Please read this manual thoroughly before use and keep it for future reference.

The KUAIQU SPPS-D series DC power supply is a high-precision, 4-digit color display device designed for various applications including electronics repair, communication equipment maintenance, battery charging, and educational purposes. It features programmable output, memory storage for common settings, and multiple safety protections.

KUAIQU DC Power Supply with various voltage options and accessories
Figure 1: KUAIQU DC Power Supply and included accessories.

2. Safety Information

Always observe the following safety precautions to prevent personal injury or damage to the device:

  • Ensure the power supply is connected to a properly grounded outlet.
  • Do not operate the device in wet or damp conditions.
  • Do not open the casing; there are no user-serviceable parts inside. Refer servicing to qualified personnel.
  • Verify correct voltage and current settings before connecting to any load.
  • Avoid short-circuiting the output terminals.
  • Use appropriate output cables and connectors.
  • This power supply can be set to high voltage. Understand your usage scenario and consult technical guidance if unsure.
Diagram showing various safety protections: Over Voltage, Over Current, Over Heat, Short Circuit, Overload, Grounding Protection.
Figure 2: Built-in safety protections of the DC Power Supply.

3. Key Features

  • High Precision Output: 4-digit color LED display with 0.01V and 0.001A resolution.
  • Wide Voltage Range: Adjustable output voltage up to 1000V (model dependent).
  • Memory Storage: Four sets of data storage (M1-M4) for frequently used voltage and current combinations.
  • Encoder Adjustment Knob: For quick and precise adjustment of voltage and current.
  • Output Control Switch: Controls the power output to protect connected loads.
  • Lock Button: Prevents accidental changes to settings.
  • Multi-Protection: Over-voltage, over-current, over-heat, short-circuit, overload, and grounding protection.
  • Intelligent Cooling: Temperature-controlled fan activates at 122℉/50℃ to ensure longevity.
  • Programmable Interface: Connects to a computer via USB or RS232 for precise control.

4. Setup Instructions

4.1 Unpacking and Inspection

Carefully remove the power supply and all accessories from the packaging. Inspect for any signs of damage during transit. The package should include:

  • 1 x DC Power Supply Unit
  • 1 x Power Cable
  • 1 x USB Cable (for computer connection)
  • 1 x User Manual
  • 1 x Output Cable (with alligator clips)

4.2 Connecting Power

  1. Ensure the power supply's main power switch is in the OFF position.
  2. Connect the provided power cable to the AC inlet on the rear panel of the power supply.
  3. Plug the other end of the power cable into a suitable grounded AC power outlet (110V or 220V, depending on your model).
Rear view of the DC Power Supply showing power input and cooling fan.
Figure 3: Rear panel with power inlet and cooling fan.

4.3 Connecting Output Load

  1. Ensure the power supply is turned OFF and the output is disabled (OFF state on the display).
  2. Connect the red output cable to the red (+) terminal and the black output cable to the black (-) terminal on the front panel.
  3. Connect the other end of the output cables to your load, ensuring correct polarity.
  4. For grounding, connect the green GND terminal to the ground of your setup if required.
Front panel overview of the DC Power Supply with labeled controls and output terminals.
Figure 4: Front panel with output terminals.

5. Operating Instructions

5.1 Power On/Off

Flip the main power switch on the rear panel to turn the device ON or OFF.

5.2 Adjusting Voltage and Current

  1. Turn the power supply ON.
  2. The display will show the current output voltage, current, and power.
  3. To adjust the voltage or current, press the encoder adjustment knob to select the digit you wish to change.
  4. Rotate the knob to increase or decrease the value of the selected digit.
  5. Repeat steps 3 and 4 for all digits until the desired voltage and current are set.
Detailed view of the encoder adjustment knob and lock button, showing how to press and rotate for precise adjustments.
Figure 5: Encoder Adjustment Knob operation.

5.3 Output Enable/Disable

Press the OUTPUT button to enable or disable the power output. When disabled, the display will show "OFF". Always disable output before connecting or disconnecting loads.

5.4 Lock Function

Press the LOCK button to lock the current settings. This prevents accidental changes to voltage and current parameters during operation. Press again to unlock.

Image showing the Output Enable/Disable button and Panel Lock button on the DC Power Supply.
Figure 6: Output and Lock button functions.

5.5 Memory Storage (M1-M4)

The power supply has four memory presets (M1, M2, M3, M4) to store and recall frequently used voltage and current settings.

  1. Set the desired voltage and current using the encoder knob.
  2. Press and hold one of the memory buttons (M1-M4) until the display indicates the settings are saved.
  3. To recall a saved setting, simply press the corresponding memory button (M1-M4) briefly.
Image illustrating the four memory storage presets (M1-M4) for different applications like circuit repair, battery charging, LED testing, and lab teaching.
Figure 7: Memory storage functions (M1-M4).

5.6 V/A Switch

Press the V/A button to switch between displaying voltage and current values on the main output display.

6. PC Software Control

The KUAIQU DC Power Supply can be controlled via a computer using RS-232, RS-485, or USB communication standards. This allows for precise programming and monitoring.

6.1 Connection and Driver Installation

  1. Connect the DC power supply to your PC using the provided USB cable or an optional RS-232/RS-485 cable (purchased separately).
  2. Place the PC and DC power supply in the startup state.
  3. Install the necessary driver programs and the upper computer software on your computer. Refer to the WORD document provided with the product for detailed installation methods.
  4. Alternatively, download the software and related materials from: https://nice-power.com.cn/Download
  5. Open the installed upper computer software to use it.
Diagram showing online control instructions for DC power supply, including connection types (RS-485, RS-232, USB) and software download link.
Figure 8: Online control instructions and software download.

6.2 Software Interface Overview

The software interface allows for model selection, current/voltage adjustment, output control, and programmed output testing.

Screenshot of the DC Power Supply software interface, labeling controls for model selection, voltage/current adjustment, output control, and programmed output test.
Figure 9: Software interface for programmed output test.

6.3 Modifying Fixed Settings for Commonly Used Values

You can modify commonly used values directly within the software. Note that temporary settings are directly editable in the upper computer window bar, but these parameters are not saved after closing the software.

Diagram showing the method for modifying fixed settings for commonly used values within the DC Power Supply software, including editing INT.ini file.
Figure 10: Modifying commonly used values in software.

6.4 Communication Port Interface Definition

Understanding the pin assignments for RS232, USB, and RS485 ports is crucial for proper connection.

Table defining pin assignments for RS232, USB, and RS485 communication ports.
Figure 11: Communication Port Interface Definition.

7. Maintenance

  • Cleaning: Use a soft, dry cloth to clean the exterior of the power supply. Do not use abrasive cleaners or solvents.
  • Ventilation: Ensure the ventilation openings on the sides and rear of the unit are not obstructed. The intelligent temperature-controlled fan will automatically activate to cool the unit when needed, prolonging its lifespan.
  • Storage: Store the power supply in a cool, dry place away from direct sunlight and extreme temperatures.
Image showing the intelligent temperature-controlled fan for cooling the power supply.
Figure 12: Intelligent temperature-controlled fan.

8. Troubleshooting

If you encounter issues with your power supply, refer to the following common problems and solutions:

  • No Power:
    • Check if the power cable is securely connected to both the unit and the AC outlet.
    • Ensure the main power switch on the rear panel is ON.
    • Verify the AC outlet is functioning correctly.
  • No Output Voltage/Current:
    • Ensure the OUTPUT button is enabled (not showing "OFF" on the display).
    • Check if the output cables are correctly connected to the load and the power supply terminals.
    • Verify that the voltage and current settings are not set to zero.
  • Settings Cannot Be Changed:
    • Check if the LOCK button is engaged. Press it to unlock the controls.
  • Overload/Protection Triggered:
    • The power supply has multiple protections (over-voltage, over-current, over-heat, short-circuit, overload). If a protection is triggered, the output may shut down. Disconnect the load, check for faults, and then re-enable the output.
    • Reduce the load or adjust settings to be within the device's limits.
  • Software Connection Issues:
    • Ensure the correct drivers are installed.
    • Verify the USB/RS232/RS485 cable is properly connected.
    • Check the communication port settings in the software.

If the problem persists, contact customer support for assistance.

9. Specifications

Feature Specification
Brand Name KUAIQU
Type Programmable Adjustable Regulated Bench DC Power Supply
Output Type SINGLE
Rated Capacity 40-1000VA
Output Power >500W
Output Voltage Range 30V, 60V, 120V, 200V, 300V, 400V, 600V, 800V, 1000V (model dependent)
Output Current Range 0-1A, 0-3A, 0-5A, 0-10A (model dependent)
Voltage Resolution 0.01V
Current Resolution 0.001A
Display 4-digit Color LED
Input Voltage 110V (90-132VAC) or 220V (180-264VAC)
Dimensions (L x W x H) 285.0mm x 120mm x 130mm
Origin Mainland China
Certification CE, FCC, RoHS
Customization Yes
High-concerned chemical None
Diagram showing the product dimensions: 285.0mm length, 120mm width, 130mm height.
Figure 13: Product dimensions.
Video 1: Demonstration of the DC Power Supply's features and operation.

10. User Tips

  • Battery Charging: When charging batteries (e.g., LiFePO4, lead acid), always connect the positive and negative poles of the DC power supply to the corresponding poles of the battery. Disconnect the battery promptly when the charging current is ≤ 50mA to prevent overcharging. Ensure the DC power supply's current and voltage settings match the battery's parameters.
  • High Voltage Use: For applications requiring high voltage, it is recommended to understand the specific usage scenario and consult technical documentation or support to ensure safe and correct operation.

11. Warranty and Support

Your KUAIQU DC Power Supply comes with a 12-month repair service from the date of purchase. If you have any questions, encounter issues, or require technical assistance, please do not hesitate to contact our customer support. We aim to reply within 24 hours.

For further information or support, please visit the official website or contact the seller directly.

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