Control Via Profisafe - Siemens SINAMICS S120 Function Manual

11.7.2

Control via PROFIsafe

The following table lists the response times from receiving the PROFIsafe telegram at the
Control Unit up to initiating the particular response.
Note
Internal SINAMICS response times
The specified response times are internal SINAMICS response times. Program run times in the
F‑host and the transmission time via PROFIBUS or PROFINET are not taken into account.
When calculating the response times between the F-CPU and the converter, you must take into
account that faults in the communication can result in a safety function only being selected after
the PROFIsafe monitoring time (F_WD_Time) has expired. The PROFIsafe monitoring time
(F_WD_Time) must also be included in the calculation when an error occurs.
Table 11-2 Response times when controlling via PROFIsafe
Function
STO
SBC
SS1/SS1E (time controlled)
Selection until STO is initiated
SS1/SS1E (time controlled)
Selection until SBC is initiated
SS1 (time controlled)
Selection until braking is initiated
t_K is the time for internal communication within the SINAMICS module. t_K can be determined as follows:
2)
Isochronous communication
Non-isochronous communication
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive system has no fault
5 · r9780 + t_K
2)
6 · r9780 + t_K
2)
5 · r9780 + p9652 + t_K
2)
6 · r9780 + p9652 + t_K
2)
5 · r9780 + 2 ms + t_K
2)
t_K = To (for To, see parameter r2064[4])
t_K = 4 ms
Applies to modules on which p2048 (for communication via IF1) or p8848 (for
communication via IF2) do not exist.
t_K = value from p2048 or p8848
Applies to modules on which p2048 (for communication via IF1) or p8848 (for
communication via IF2) exist.
Safety Integrated Basic Functions
11.7 Response times
Worst case for
A fault is present
5 · r9780 + t_K
2)
10 · r9780 + t_K
2)
5 · r978 + p9652 + t_K
10 · r9780 + p9652 + t_K
5 · r9780 + 2 ms + t_K
2)
2)
2)
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