HANLEI SD003-DVR Digital Display Potentiometer User Manual

1. Introduction

The HANLEI SD003-DVR is a versatile digital display potentiometer designed to replace traditional low-power single-turn potentiometers. It provides precise digital control and display of resistance values, making it ideal for applications requiring adjustable voltage or speed control, such as with frequency converters, solenoid valves, and governors. This manual provides detailed instructions for its safe and effective use.

2. Safety Information

• Always ensure the input voltage is within the specified range (DC 6-30V) to prevent damage to the device.
• Disconnect power before making any wiring connections or adjustments.
• Handle electrical components with care to avoid electric shock.
• Do not expose the device to moisture, extreme temperatures, or corrosive environments.
• Ensure proper ventilation if used in an enclosed space.

3. Package Contents

Upon opening the package, verify that you have received the following item:

• 1 x HANLEI SD003-DVR Digital Display Potentiometer

4. Specifications

5. Product Overview and Features

The SD003-DVR digital display potentiometer offers enhanced precision and readability compared to traditional analog potentiometers. Its key features include:

• Digital Display: Clear, easy-to-read numerical display of the set value.
• Wide Compatibility: Can replace most commonly used single-turn low-power potentiometers (e.g., RV09, WH148, RK097NS) with the same resistance value.
• Versatile Applications: Suitable for use in frequency converters, solenoid valves, governors, and other control systems.
• Customizable Display: The displayed values can be customized to suit specific application requirements.

The digital potentiometer can replace various traditional potentiometers and is used in applications like frequency converters, solenoid valves, and governors.

6. Setup Instructions

Follow these steps to correctly wire your SD003-DVR digital display potentiometer:

1. Identify Connections: On the back of the device, locate the terminal block. It has markings for 'Potentiometer output 1', 'Potentiometer output 2', 'Power-', and 'Power+'.
2. Power Connection: Connect your DC 6-30V power supply to the 'Power+' (red wire typically) and 'Power-' (blue wire typically) terminals.
3. Potentiometer Output: Connect the device you wish to control (e.g., speed controller, inverter) to either 'Potentiometer output 1' or 'Potentiometer output 2'. Important: Only connect one potentiometer output.

Wiring diagram showing connections for power and potentiometer outputs. Connect only one potentiometer output.

7. Operating Instructions

The SD003-DVR allows for customization of its display parameters. The device features two setting keys, 'A Set key' and 'B Set key', located on the PCB under the back cover.

Location of the 'A Set key' and 'B Set key' on the device's PCB.

7.1. Parameter Setting Procedure

Refer to the table below and the video demonstration for detailed parameter setting.

Reference table for parameter setting, including minimum/maximum display numbers, set values, magnification, and decimal point options.

7.2. Example Demonstration

To set the value from 0000 to 640.0:

1. Set the minimum value (A) to 0000.
2. Set the magnification (B) to 3.2.
3. Bring the decimal point (D) to the third place (e.g., XXX.X).
4. Set C02 (refer to the parameter setting table for C02 details).
5. After parameter setting is complete, the maximum display value can be set to 640, and the minimum number of displays can be set to 0000.

Video demonstrating the digital display potentiometer's functionality, comparison with an ordinary potentiometer, and a step-by-step guide to parameter settings.

8. Maintenance

• Keep the device clean and free from dust and debris. Use a soft, dry cloth for cleaning.
• Avoid using harsh chemicals or abrasive cleaners.
• Store the potentiometer in a dry environment, away from direct sunlight and extreme temperatures.
• Regularly check wiring connections for any signs of wear or damage.

9. Troubleshooting

• Display not working: Check power connections and ensure the input voltage is within DC 6-30V.
• Incorrect display value: Review the parameter setting procedure (Section 7.1) and ensure all settings (A, B, C, D) are correctly configured for your application.
• Standard potentiometer linear error: Be aware that standard potentiometers may have a linear error of more than 5%. This device aims to provide a more accurate digital representation.
• Display range issues: The display range is -1999 to 9999. If the minimum value displayed is less than -1000 or greater than 1000, consider adjusting the C02 or C10 settings (refer to the parameter setting table).
• No control over connected device: Verify that only one potentiometer output is connected and that the wiring to your external device is correct.

10. User Tips

• Understanding Resistance Range: The adjustable range of the potentiometer is 0-100% of its nominal resistance value. For example, if you have a 10K potentiometer, the adjustable range will be 0-10K. The digital display will reflect this percentage or a scaled value based on your parameter settings.
• Fine-tuning: Use the 'A Set key' for precise adjustments of individual digits during parameter setting, and the 'B Set key' for broader changes like magnification.
• Automatic Storage: Remember that decimal point and magnification settings are automatically stored after 2 seconds of inactivity, so ensure your desired setting is active before letting go.

11. Warranty and Support

For any issues or questions regarding your HANLEI SD003-DVR Digital Display Potentiometer, please contact the seller or refer to the product listing for support information. Keep your purchase records for warranty claims.