Siemens SINUMERIK MC Commissioning Manual page 217

Parameterization of the tolerance time
Even when simultaneously selecting/deselecting, a certain time delay cannot be avoided, e.g.
as a result of mechanical switching operations. Therefore, in the following parameters, define
the tolerance times, within which selection/deselection in both monitoring channels is
considered to be simultaneously valid.
● p9650 SI SGE switchover tolerance time (Control Unit)
● p9850 SI SGE switchover tolerance time (Motor Module)
In order to avoid that faults are incorrectly initiated, at these inputs the tolerance time must
always be set shorter than the shortest time between two switching events (ON/OFF, OFF/ON).
Fault F01611
If the "Safe Torque Off" function is not selected/deselected within the tolerance time, this is
detected by the cross-comparison, and fault F01611 (STOP F) is output. In this case, the pulses
have already been canceled as a result of the selection of "Safe Torque Off" on one channel.
Note
Timing between the switching operations
Message F01611 with fault value 1000 indicates that the switching operations occur too
frequently.
● STO is being permanently initiated via PROFIsafe (also as subsequent response).
Within the time 5 × p9650, there must be at least two switching operations via PROFIsafe with
a minimum time between them of p9650.
Additional notes regarding setting the discrepancy time are included in the "SINAMICS S120/
S150 List Manual" for the C01770 and F01611 safety messages.
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB
Controlling safety functions integrated in the drive
5.6 Control via terminals on the Control Unit and Motor/Power Module
217