Siemens SINAMICS G120 Function Manual page 56

Activation
3.2 Activation via F-DI
Components in the same control cabinet
A control cabinet that has been set up and wired correctly does not contain any damaged
wiring or cross circuits.
For this reason, you may interconnect the I/O modules and inverter in a control cabinet by
means of a single-channel wiring arrangement. The two terminals of the fail-safe input must
be connected to each other on the inverter.
Figure 3-15
Components in separate control cabinets
If the components are located in separate control cabinets, the wiring between the I/O
modules 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 line. The signals for
terminal 6 and 8 are then transferred via the second line.
Figure 3-16
56
Interconnecting the inverter and I/O modules within the same control cabinet
Interconnecting the inverter and I/O modules in separate control cabinets
Safety Integrated Function Manual, SINAMICS G120
Function Manual, 07/2010, FW 4.3.2, A5E03052391B AA