company news about Common Problems and Solutions of Electric Dynamometer

Common Problems and Solutions of Electric Dynamometer

Electric dynamometers (also known as dynamometers) are primarily used for testing engine power. They can also be used as loading devices for transmission equipment such as gearboxes and reducers to test their transmitted power. The following problems often arise in practical applications, and their corresponding professional solutions are as follows:

1. Full-scale calibration abnormality

If the positive full-scale range cannot be calibrated, replace resistor R16 (10kΩ). (For example, if the +5N·m range can only be adjusted to +4.5N·m, increase the value of R16.) If the negative full-scale range is abnormal, replace resistor R15 (10kΩ) (reduce the value). If there is deviation in both directions, replace resistor R20.

2. After the controller is started, the torque value is displayed but cannot be adjusted

Replace 3 chips on the main board, check if the circuit is broken or replace a qualified auxiliary board; if the abnormality persists, check for sensor failure.

3. Speed signal missing or abnormal

Check whether the speed gear is damaged.

4. Communication failure

First, refer to the "Electric Dynamometer Technical Specifications V1.0" to select the correct serial port. Then check whether the communication cable is damaged or the serial port is faulty. Use a serial port debugging tool to verify the serial port functionality. Refer to the device manual for specific debugging commands.

5. Measurement data deviation

If a variable frequency power supply is used, anti-interference measures such as grounding and filter installation must be taken to ensure that the power supply system is reliably grounded. In addition, eccentric clamping of the fixture will also cause data deviation, and the clamping accuracy needs to be calibrated.