Applicable Systems
FC-30
FC-51
FC-101
FC-202
FC-302
Symptoms
Safe stop function has been activated.
Possible Causes
- Safety input activated
- STO (Safe Torque Off) triggered
- Safety relay command
Troubleshooting Steps
- Step 1: Check safety input signal
Safety input status normal - Step 2: Verify safety relay operation
Relay functioning correctly - Step 3: Clear safety command to resume
Safety command cleared
How to Reset
Reset by clearing safety command and cycling power.
Source: Danfoss VLT FC-302 Operating Guide, Danfoss A/S
Category: PLC & VFD