Siemens SINAMICS S120, Function Manual

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Safety Integrated Basic Functions
10.7 Response times
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
695
Function Worst case for
Drive system has no fault A fault is present
SS1/SS1E (time-controlled)
Selection until SBC is initiated 6 · r9780 + p9652 + t_K
2)
10 · r9780 + p9652 + t_K
2)
SS1 (time-controlled)
Selection until braking is initiated 5 · r9780 + 2 ms + t_K
2)
5 · r9780 + 2 ms + t_K
2)
1)
The specified response times involve 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 be-
tween 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.
2) t_K is the time for internal communication within the SINAMICS module; t_K can be determined as follows:
For isochronous communication t_K = To (for To, see parameter r2064[4])
For non-isochronous communication t_K = 4 ms
(for modules on which p2048 or p8848
3)
do not exist)
t_K = value from p2048 or p8848
3)
(for modules, on which p2048 or p8848 3) exist)
3)
p2048 is applicable for communication via IF1, p8848 for communication via IF2.
10.7.3 Control via TM54F
The following table lists the response times from the control via TM54F until the response
actually occurs.
Table 10- 4 Response times for control via TM54F
Function Worst case for
Drive system has no fault A fault is present
STO 3 · r9780 + 2 ms 3 · r9780 + 2 ms
SBC 4 · r9780 + 2 ms 8 · r9780 + 2 ms
SS1/SS1E (time-controlled)
Selection until STO is initiated
3 · r9780 + p9652 + 2 ms 3 · r9780 + p9652 + 2 ms
SS1/SS1E (time-controlled)
Selection until SBC is initiated
4 · r9780 + p9652 + 2 ms 8 · r9780 + p9652 + 2 ms
SS1 (time-controlled)
Selection until braking is initiated
3 · r9780 + 4 ms 3 · r9780 + 4 ms