8538

Category: Alarm

Cause

1. Poor encoder connection port contact or incorrect connector wiring
2. Broken or short-circuited encoder cable, or use of a cable exceeding the specified impedance; corrosion caused by temperature, humidity, or gas; short circuits caused by water droplets or cutting oil; poor connector contact caused by vibration
3. Malfunction caused by noise interference.
4. Servo unit fault

Corrective action

1. Check the encoder cable condition; use an encoder cable meeting specifications.
2. Check the operating environment; improve it and replace the cable. If this still does not improve the condition, replace the servo unit.
3. Wire the encoder peripheral connections correctly (separate the encoder cable from the servo motor main circuit cable, ground properly, etc.).
4. Connect the servo motor to another servo unit and turn on control power. If no alarm occurs, the servo unit may be faulty. Replace the servo unit.