Response Times - Siemens SINAMICS S120 Function Manual

3.4

Response times

The Basic Functions are executed in the monitoring clock cycle (p9780). PROFIsafe
telegrams are evaluated in the PROFIsafe scan cycle, which corresponds to twice the
monitoring clock cycle (PROFIsafe scan cycle = 2 × r9780).
Controlling Basic Functions via terminals on the Control Unit and Motor Module
The following table lists the response times from the control via terminals until the response
actually occurs.
Table 3- 1 Response times for control via terminals on the Control Unit and the Motor Module
Function
STO
SBC
SS1 (time controlled)
Selection (up until braking is initiated)
The following tables list the response times, when selecting the STO and SS1 functions,
between detecting a new selection at the Control Unit and initiating the particular brake
response.
Controlling Basic Functions via Profisafe
The following table lists the response times from receiving the PROFIsafe telegram at the
Control Unit up to initiating the particular response.
Table 3- 2 Response times when controlling via PROFIsafe
Function
STO
SBC
SS1 (time controlled)
Selection - up until STO is initiated
SS1 (time controlled) selection
- up until SBC is initiated
SS1 (time controlled)
Selection (up until braking is initiated)
Safety Integrated
Function Manual, (FHS), 11/2009, 6SL3097-4AR00-0BP0
Typical
2 x r9780 + p0799
4 x r9780 + p0799
2 x r9780 + p0799 + 2 ms
Typical
5 x r9780
4 x r9780
5 x r9780 + p9652
6 x r9780 + p9652
2 x r9780 + p0799 + 2 ms
System features
3.4 Response times
Worst case
4 x r9780 + p0799
8 x r9780 + p0799
4 x r9780 + p0799 + 2 ms
Worst case
5 x r9780
10 x r9780
5 x r9780 + p9652
10 x r9780 + p9652
4 x r9780 + p0799 + 2 ms
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