8504

Category: Alarm

Cause

1. Ambient temperature too high
2. Operation after repeatedly resetting an overload alarm by switching off the power
3. Excessive load, or regenerative processing capacity exceeded during operation
4. Inappropriate servo unit mounting orientation or spacing from other servo units
5. Servo unit fault

Corrective action

1. Measure ambient temperature with a thermometer; improve servo unit installation conditions and reduce ambient temperature.
2. Use the alarm history display (Fn000) to confirm overload alarms; change the alarm reset method.
3. Use cumulative load ratio Un009) to check the operating load and regenerative load ratio (Un00A) to check regenerative processing capacity. Reconsider load and operating conditions.
4. Check the servo unit installation and install it according to servo unit installation standards.
5. The servo unit may be faulty. Replace the servo unit.