Safety module for sensorless standstill detection

Since the standstill monitor works without sensors, the machine designer does not have to intervene in the "hardware" of the surrounding construction. The safety module is connected directly to a three-phase three-phase motor and measures the frequency of the induced voltage directly - with rated motor voltages of up to 690V. The safety contacts for releasing an interlocking device close as soon as the motor comes to a standstill.

The SSW 303HV can be used in safety circuits up to Category 4 / Performance Level e according to EN 13849-1 and SIL 3 according to EN IEC 61508 - with all common types of solenoid interlocks from the relevant manufacturers.