Siemens SINAMICS G120 Function Manual page 66

Installing
4.3 Activation via F-DI
Components in separate control cabinets
If the components are located in separate control cabinets, the wiring between the Modular
Safety System and the F-DIs on the inverter must be installed such that it is protected
against cross and short-circuits.
Transfer the two signals for activating a safety function via wires in separate lines. In the
example, the signals for terminal 5 and 7 are transferred via the first wire. The signals for
terminal 6 and 8 are then transferred via the second wire.
If you want to use the safety outputs of the 3RK3 central unit for transferring signals via two
channels, inverter discrepancy monitoring must be adapted to the different switching times of
the electronic output and relay contact.
Figure 4-17
66
Interconnecting the inverter and Modular Safety System in separate control cabinets
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA