As a standard, the safety function for drive systems is integrated decentralized in the individual motor current converters. When the electric motors are equipped with just a centrally switched STO control unit, the installation and wiring expenditures of the drive system are reduced, resulting in lower manufacturing costs.
The new safety concept fulfills the safety requirements up to SIL 3 and PLe and can be used for all applications where the feeder units and axis units have the same STO requirements.