WK811 PWM DC Motor Speed Regulator Instruction Manual

1. Introduction

The WK811 is a Pulse Width Modulation (PWM) DC motor speed regulator designed for precise control of DC motors, including DC servo motors, PM DC motors, and DC spindle motors. This regulator provides stable and efficient speed control for various applications.

Key Features:

• Wide input voltage range: 110V-220VAC.
• Adjustable output voltage: DC0-220V.
• High output rated current: 8A.
• Maximum excitation current: 1A.
• Equipped with a 4K7 potentiometer for speed control.
• Compact design for easy integration.

2. Safety Precautions

To ensure safe and reliable operation, please observe the following precautions:

• Wiring Matching: Connect power and motor wires strictly according to the nameplate. Ensure that the phase sequence, voltage, and current do not exceed the specified standards. Ensure firm grounding.
• Environmental Protection: Keep the device away from dust, oil stains, and accumulated water. Operate within the rated temperature range and ensure adequate ventilation and heat dissipation. Regularly clean any filter screens.
• Adaptation Protection: For outdoor or corrosive environments, use a protective controller and ensure cables are waterproof-sealed to prevent foreign objects from entering the housing.
• Initial Power-On: If the device has been stored in an environment with significant temperature fluctuations, allow it to sit for at least 12 hours to equalize with the ambient temperature before powering on. This prevents condensation which could damage the unit.

3. Technical Specifications

Electrical Parameters (Model: WK811)

Environmental Conditions:

4. Setup and Wiring

Proper installation and wiring are crucial for the safe and effective operation of the WK811 speed regulator. Refer to the diagrams and instructions below.

Physical Installation:

• Mount the speed regulator in a location that allows for good ventilation.
• If installing multiple units, ensure a minimum distance of 5cm between them for optimal heat dissipation.
• Ensure the unit is securely mounted to prevent vibration.

Terminal Connections:

The WK811 features clearly labeled terminals for power input, motor connection, excitation, and speed control. Always ensure power is disconnected before making any wiring changes.

• POWER INPUT: Connect your 110V-220VAC power supply here. Ensure correct polarity and secure connections.
• MOTOR: Connect the DC motor leads to these terminals.
• EXCITATION: Connect excitation windings if your motor requires them, following motor specifications.
• SPEED: Connect the external 4K7 potentiometer for speed adjustment.

Always ensure the grounding terminal is firmly connected to the system's protective ground.

5. Operation

Parameter Setting:

Before initial startup, adapt the rated parameters of your motor (power, speed, and rated current) to the speed regulator. Adjust any necessary protection values (e.g., overcurrent, overheating, undervoltage) according to your motor's specifications and application requirements.

Start-up Procedure:

1. Verify all wiring connections are secure and correct.
2. Ensure the potentiometer is set to its minimum speed position.
3. Apply power to the speed regulator.
4. Slowly increase the speed using the potentiometer to the desired operating speed.
5. Avoid frequent starting, stopping, or reversing the motor, as this can reduce the lifespan of both the motor and the regulator.
6. Utilize soft start and soft stop functions if available to prevent sudden jolts.
7. Do not overload the motor or operate it at excessive speeds beyond its rated capabilities.

6. Maintenance

Regular maintenance helps ensure the longevity and optimal performance of your WK811 speed regulator.

• Power Disconnection: Always disconnect power and allow the unit to discharge completely before performing any maintenance or inspection.
• Avoid Live Work: Never plug or unplug wiring, or remove the cover plate while the unit is powered on.
• Terminal Inspection: Regularly check all wiring terminals for any signs of looseness, corrosion, or burning. Tighten connections as needed.
• Cleaning: Keep the unit free from dust and debris. If equipped with filter screens, clean them regularly to ensure proper ventilation.

7. Troubleshooting

If the speed regulator encounters an issue, follow these steps to diagnose and resolve the problem:

• Alarm Shutdown: If the unit shuts down due to an alarm, first disconnect power.
• Troubleshooting Steps:
  1. Inspect all wiring connections for correctness and security.
  2. Check the motor for any faults or damage.
  3. Verify the load connected to the motor is within specifications.
• Resetting: After troubleshooting and resolving the issue, power off the unit completely, then power it back on to reset the system. Do not attempt to operate the unit if a fault persists.

Status Indicators (General Guidance):

While specific indicator behavior may vary, many motor controllers use LEDs to signal status and faults:

• Green LED: Typically indicates power is ON.
• Red LED: Often indicates a fault. The blinking pattern may signal specific issues (e.g., 1 blink for overcurrent, 2 for overvoltage, 7 for position tracking error). Refer to the specific model's detailed manual for precise fault codes if available.

8. User Tips

• Always ensure the motor's power rating is within the recommended range (10W-800W) for the WK811 to prevent damage and ensure optimal performance.
• For applications requiring precise speed control, consider calibrating the potentiometer's range to match your specific motor's operational requirements.
• Regularly check the ambient temperature around the regulator, especially during continuous operation, to ensure it stays within the 0°C to +50°C range.

9. Warranty and Support

For detailed warranty information and technical support, please refer to the official product documentation or contact the manufacturer directly.

A comprehensive user manual in PDF format may be available for further reference:

View User Manual (PDF)