Siemens SINAMICS PERFECT HARMONY GH180 - Page 460

Fault display Type Enable Potential causes and corrective actions
Modulator watchdog 󹪞t F Fixed Cause
Modulator detected that the CPU stopped communicating with it.
Action
1. Reset drive control power.
2. Check for proper grounding practices.
3. Replace DCR.
Loss of drive enable F SOP Cause
Modulator detected loss of drive enable.
Action
1. Reset drive control power.
2. Check for proper grounding practices.
Troubleshooting Faults and Alarms
11.7 Drive Faults and Alarms Modulator Related
NXGPro+ Control Manual
458 Operating Manual, A5E50491925A