Cause : RESOLVER ERROR comes when an error has been detected on the resolver signals. This fault can affect the drive’s ability to accurately control the motor based on its position and speed.

RESOLVER ERROR fault in a Parker AC30 drive indicates a problem with the resolver, which is a type of feedback device used to measure the position and speed of the motor shaft.

Possible Causes and Solutions:

1. Faulty Resolver:

   • Cause: The resolver itself may be malfunctioning or damaged, leading to incorrect position or speed feedback.
   • Solution:
     • Inspect and test the resolver: Check the resolver for physical damage or signs of malfunction. Test it according to the manufacturer’s specifications and replace it if necessary.

2. Incorrect Wiring or Connections:

   • Cause: Issues with the wiring or connections between the resolver and the drive can disrupt signal transmission.
   • Solution:
     • Check wiring and connections: Ensure that all connections are secure and correctly wired according to the drive and resolver documentation. Repair or replace any damaged wiring.

3. Resolver Calibration Issues:

   • Cause: The resolver may need calibration or adjustment to function correctly.
   • Solution:
     • Calibrate the resolver: Follow the manufacturer's instructions for calibrating the resolver to ensure it provides accurate position and speed feedback.

4. Signal Interference:

   • Cause: Electrical noise or interference can affect the resolver’s signal and lead to errors.
   • Solution:
     • Mitigate interference: Use shielded cables and ensure proper grounding to reduce electrical noise. Verify that there are no external sources of interference affecting the resolver signal.

5. Drive Configuration Errors:

   • Cause: Incorrect configuration settings related to the resolver in the drive can lead to errors.
   • Solution:
     • Review drive settings: Check the drive’s configuration settings related to the resolver. Ensure that they are correctly set according to the resolver’s specifications and application requirements.

6. Faulty Drive Components:

   • Cause: Internal faults in the drive’s resolver interface or signal processing components can cause resolver errors.
   • Solution:
     • Inspect the drive: If external causes have been ruled out, check the drive’s internal components related to resolver signal processing.