It helps operators isolate whether the 701 alarm is caused by a faulty fan or a controller-side issue. Steps to Modify Parameter 8901 (Fan Alarm Shielding)
A new fan cost is negligible compared to a new servo drive. Conclusion
Active monitoring; 701 alarm triggers an immediate emergency stop. 1 (Modified)
Once you set 8901 = 1, consider adjusting two companion parameters to complete the upgrade:
The standard setting. If the control unit's upper fan motor fails or slows down, the CNC triggers , which usually freezes the machine to prevent overheating. Bit 0 (Value = 1):