Advanced Commissioning - Siemens SINAMICS G110M Operating Instructions Manual

Advanced commissioning

6.8 Safe Torque Off (STO) safety function
a control module, the inverter responds to these test signals.
A signal change during a bit pattern test usually lasts:
– On test: 1 ms
– Off test: 4 ms
If the safety-related input signals too many signal changes within a certain time, then the
inverter responds with a fault.
Figure 6-58
An adjustable signal filter in the inverter suppresses temporary signal changes using bit
pattern test or contact bounce.
The filter increases the inverter response time. The inverter only selects its safety function
after the debounce time has elapsed.
Figure 6-59
246
Inverter response to a bit pattern test
Filter for suppressing temporary signal changes
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 06/2016, FW V4.7.6, A5E31298649B AG