Advanced commissioning
7.2 Inverter control
The inverter filters signal changes using bright and dark tests at its safety-related inputs:
● SIL 2 / PL d: the safety-related inputs of the inverter have an adjustable software filter.
● SIL 3 / PL e: a fixed hardware filter suppresses signal changes ≤ 4 ms at the safety-
related input of the PM240-2 (FSD, FSE) Power Module.
Special measures when establishing connections
When routing cables over longer distances, e.g. between remote control cabinets, you have
the following options to reduce the risk of damaged cables of your plant or machine:
● Use shielded cables with grounded shield.
● Lay signal cables in steel pipes.
Examples of connecting a safety-related input can be found in Section: Connecting the
safety-related input (Page 308).
Converter with control units CU240D-2
120 Operating Instructions, 04/2015, FW V4.7.3, A5E34262100B AB
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