6.2
Regularly testing the safety functions
6.2.1
Overview
Safety functions according to SIL 2 to IEC 61508 and to Pl d according to EN ISO 13849
You must initiate the following function tests as a minimum once per year in order to maintain
the assured failure probability of the safety functions:
● The inverter must test its fail-safe digital input if you are using a fail-safe digital input.
Testing fail-safe digital inputs (Page 215)
● The inverter must test its safety functions:
Testing the basic functions (Page 216)
Testing the extended functions (Page 218)
● The inverter must test its fail-safe digital output if you are using a fail-safe digital output.
Testing a fail-safe digital output (Page 220)
Safety functions according to SIL 3 to IEC 61508 and to Pl e according to EN ISO 13849
You must initiate the following function tests at least once every three months in order to
maintain the guaranteed failure probability of the "STO via Power Module terminals" function:
● The inverter must test the fail-safe digital input on the Power Module.
Testing fail-safe digital inputs (Page 215)
● The inverter must test the "STO via Power Module terminals" function.
Testing the basic functions (Page 216)
Operation
6.2 Regularly testing the safety functions
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
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Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD