Siemens SINAMICS G120D Series Operating Instructions Manual page 212

Advanced commissioning
7.8 Safe Torque Off (STO) safety function
Checking the connection of digital inputs
The simultaneous connection of digital inputs with a safety function and a "standard" function
may lead to the drive behaving in unexpected ways.
If you control the safety functions in the inverter using digital inputs, you must check whether
these digital inputs are connected to a "standard" function.
Procedure with STARTER
Proceed as follows to check as to whether the safety-related inputs are only used for the
safety functions:
1. In the project navigator, select the inputs/outputs.
2. Select the screen for the digital inputs.
3. Remove all digital input interconnections that you use as safety-related input F-DI:
Figure 7-49
4. You must delete the digital input connections for all CDS if you use the switchover of the
command data sets (CDS).
You can find a description of the CDS switchover in the operating instructions.
You have ensured that the safety-related inputs only control safety functions in the inverter.
212
Removing the DI 4 and DI 5 digital-input connections
Converter with control units CU240D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34262100B AB