4.21.2 Options and control
Note
Requirements
STO is triggered when a test stop is carried out for the Safety Integrated Functions. It is not
permissible that STO is selected before selecting the test stop.
When blocksize Power Modules are used, the test stop must be triggered under controlled
standstill conditions (speed setpoint setting of 0, current is flowing through the motor).
The forced checking procedure (test stop) can be triggered at any time by an application. The
parameter assignment and control are performed as follows:
● Controlled via SCC (external drives), programmed in the application
You can perform the test stop via SCC, programmed in the application itself. The following
parameters are relevant:
– p9559 SI Motion Forced checking procedure timer (Control Unit)
– p9705 BI: SI Motion Test stop signal source
– r9723.0 CO/BO: SI Motion diagnostics signals integrated in the drive
See: Safety Info Channel and Safety Control Channel (SIC/SCC) (Page 212)
If the test stop is executed as described, the action does not require a POWER ON. The
acknowledgment is set by canceling the test stop request.
Safety functions integrated in the drive
4.21 Forced checking procedure/test stop
Safety Integrated (with SINAMICS S120)
204 Commissioning Manual, 02/2020, A5E46305916B AB
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