Bộ điều khiển Control unit SG-EFS 104/4L Mayser, Control unit SG-EFS 104/4L, SG-EFS 104/4L Mayser

Terminology: ON state, OFF state according to ISO 13856

The single-fault-safe electronics module has dual channels (redundant design). Each channel controls a force-guided relay and additionally monitors the relay of the other channel. The relays control OSSD 1 (terminals 13, 14), OSSD 2 (terminals 23, 24) and OSSD 3 (terminals 33, 34). The electronic system monitors the con- nected BK-type sensors.

Ready for operation

The control unit is operated with a voltage of 24 V AC/DC. When the supply volt- age is connected, the light-green “Power” LED lights up.
When the sensor is not activated, and after a reset, OSSDs 1, 2 and 3 are in the ON state and the signal output is open. The green “Channel 1” and “Channel 2” LEDs light up.

Sensor activated

If the sensor is activated, then OSSDs 1, 2 and 3 are in the OFF state; the signal output is closed. The green “Channel 1” and “Channel 2” LEDs go out.

Sensor cable break

In the event of a cable break on the sensor, OSSDs 1, 2 and 3 are in the OFF state; the signal output is closed. The green “Channel 1” and “Channel 2” LEDs go out.

Signal output

The signal output (terminals 41, 42) works the opposite way round to OSSDs 1, 2 and 3.