Functions
8.10 Safe Torque Off (STO) safety function
SINAMICS G110M Operating Instructions
Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
253
Procedure with STARTER and Startdrive
To set the forced checking procedure (test stop) of the basic functions, proceed as follows:
1. Select the screen form for setting the forced checking procedure.
Figure 8-49 Setting the forced checking procedure with STARTER
Figure 8-50 Setting the forced checking procedure with Startdrive
2. Set the monitoring time to a value to match your application.
3. Using this signal, the inverter signals that a forced checking procedure (test stop) is
required.
Interconnect this signal with an inverter signal of your choice.
4. Only applies to STARTER: Close the screen form.
You have set the forced checking procedure (test stop) for the basic functions.
The forced checking procedure (test stop) of the basic functions is an inverter self test. The
inverter checks its circuits to switch off the torque. If you are using the Safe Brake Relay, for
a forced checking procedure, the inverter also checks the circuits of this component.
You start the forced checking procedure each time that the STO function is selected.
Using a timer block, the inverter monitors as to whether the forced checking procedure is
regularly performed.
Figure 8-51 Starting and monitoring the forced checking procedure (test stop)
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