F20.11
STO – switching delay
SEW Eurodrive · MOVIDRIVE system
What does F20.11 mean?
A switching delay has been detected between the two Safe Torque Off (STO) channels. This indicates a potential malfunction within the safety circuit, which compromises the safety integrity of the drive and risks uncontrolled motor movement if not resolved.
Complete Troubleshooting Guide
- 1
Check the wiring and connections for both STO channels to ensure integrity and correct installation.
- 2
Verify the functionality of safety relays or other components within the STO circuit.
- 3
Consult the safety manual for specific STO diagnostics and troubleshooting procedures.