Fail-Safe Digital Input - Siemens SINAMICS G120 Operating Instructions Manual

Adapt terminal strip

5.2 Fail-safe digital input

5.2 Fail-safe digital input
This manual describes the STO safety function with control via a fail-safe input. Additional
safety functions, additional fail-safe digital inputs of the inverter and the control of the safety
functions via PROFIsafe are described in the Safety Integrated Function Manual.
Defining a fail-safe digital input
If you use the STO safety function, then you must configure the terminal strip during the
basic commissioning for a fail-safe digital input, e.g. with p0015 = 2 (see Section Select
interface assignments (Page 46)).
The inverter combines digital inputs DI 4 and DI 5 to form a fail-safe digital input.
Terminals of the fail-safe digital
input
Note
Control Units CU240B-2 and CU240B-2 DP do not have a fail-safe digital input.
92
Function
You must enable STO to select the STO safety function (Basic
Safety) via FDI 0.
Further information can be found in section Safe Torque Off (STO)
safety function (Page 220).
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB