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Figure 6-27 Inverter response to a bit pattern test
A filter in the inverter suppresses brief signals as a result of the bit pattern test or contact
bounce.
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Figure 6-28 Filter to suppress brief signals
The filter extends the response time of the safety function by the debounce time.
Parameter
Description
p9650
F-DI changeover tolerance time (factory setting: 500 ms)
Tolerance time to change over the fail-safe digital input for the basic functions.
p9651
STO debounce time (factory setting: 1 ms)
Debounce time of the fail-safe digital input for the basic functions.
Debounce times for standard and safety functions
The debounce time p0724 for "standard" digital inputs has no influence on the fail-safe input
signals. Conversely, the same applies: The F-DI debounce time does not affect the signals of
the "standard" inputs.
If you use an input as a standard input, set the debounce time using parameter p0724 .
If you use an input as a fail-safe input, set the debounce time as described above.
6.15.2.5
Setting the forced checking procedure (test stop)
Requirement
You are online with STARTER or Startdrive online.
Advanced commissioning
6.15 Safe Torque Off (STO) safety function
SINAMICS G120C converter
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
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