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The following IEC 61800-5-2 safety functions are integrated in the drive through the use of ACOPOSmulti SafeMOTION inverter modules and because this component is implemented in the B&R safety system. Additionally, "Safe speed" is also provided for the SafeLOGIC. This makes it possible to combine safety functions in an application as needed.

STO
STO1
SOS

Safe state

In safety-related systems, potentially dangerous situations are simply unacceptable, even in the event of an error. This is ensured by a two-channel hardware and firmware structure as well as by the system architecture.
The closed-circuit principle is applied here. In the event of an error, torque and power are always switched off on the drive.

Safe speed

If an EnDat 2.2 safety encoder or a SinCos encoder is installed in a system, then the SafeLOGIC controller can request the current speed of the motor encoder over the safe network and use that information as an input signal in the safe application. The signal achieves SIL 2 with an EnDat 2.2 safety encoder and max. SIL 3 with a SinCos encoder (depending on the encoder used) as defined in EN 61508.

Encoders

EnDat 2.2 safety encoders or SinCos measuring instruments are used to safely determine and evaluate the position or speed of the motor. Because they determine the position redundantly, they satisfy SIL 3 requirements (depending on the encoder used).

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