6.11 Fail-safe acknowledgment
6.11.1 Acknowledging using a fail-safe signal
You must acknowledge the majority of safety function faults using a fail-safe signal. The
following options are available.
● Acknowledging via a fail-safe digital input
● Acknowledging via PROFIsafe
● Acknowledging by selecting and deselecting STO
● Acknowledging by switching the power supply voltage on and off
Acknowledging via a fail-safe digital input
Procedure
To acknowledge the inverter via a fail-safe digital input, proceed as follows:
1. Acknowledge the fault with F-DI = 0 → 1 → 0.
2. Then, acknowledge the inverter with the "standard" acknowledgement signal.
You have acknowledged the inverter in a fail-safe fashion.
Acknowledging via PROFIsafe
Procedure
To acknowledge the inverter via PROFIsafe, proceed as follows:
1. Acknowledge the fault with bit 7 of the control word 0: Bit 7 = 0 → 1 → 0.
2. Then, acknowledge the inverter with the "standard" acknowledgement signal.
You have acknowledged the inverter in a fail-safe fashion.
Acknowledging by selecting and deselecting STO
Procedure
To acknowledge the inverter by selecting and deselecting STO, proceed as follows:
1. Select the safety function STO or SS1 and then deselect again.
– F-DI = 1 → 0 → 1
or
– PROFIsafe control word 1, bit 0 or 1 = 1 → 0 → 1
2. Then, acknowledge the inverter with the "standard" acknowledgement signal.
You have acknowledged the inverter in a fail-safe fashion.
Operation
6.11 Fail-safe acknowledgment
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD 299
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