Siemens SINAMICS S120 Function Manual page 212

Control of the safety functions
5.2 Control signals by way of terminals on the Control Unit and Motor / Power Module
Table 5- 3
DIP switch
Note
Diagnostics
The state of the switch-off signal paths can be monitored using 2 digital outputs of the
Control Unit. You can find additional information in the SINAMICS S120/S150 List Manual.
Note
Conformity with SIL3
To satisfy the requirements of SIL3, you must regularly check the STO functionality – as a
minimum every 4 weeks. The check must be made on the plant/system side.
210
DIP switches for the safety function "Safe Torque Off" via terminals of the Power Module
Application
To use Safety Integrated of the CU310, deactivate the function "STO via
Power Module terminals" by setting both the DIP switches for the inter-
face STO_A/STO_B into the "0" position.
To enable the "Safe Torque Off" safety function via Power Module ter-
minals, you must set both DIP switches to the "1" position.
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
Safety Integrated