Bộ điều khiển Control unit SG-RS 309-2 Mayser, Control unit SG-RS 309-2, SG-RS 309-2 Mayser

The single-fault-safe electronics module has dual channels (redundant design). Two monitoring circuits each control two semiconductor outputs (OSSD 1.1, 1.2 and 2.1, 2.2) and regularly monitor them to make sure they are working. The elec- tronics monitor the electrical resistance of the connected sensors which have a defined closed-circuit current.

Ready for operation

The control unit is operated with a voltage of 24 to 36 V DC. When the supply voltage is connected, the green “P” LED is lit up.
When the sensors are not activated, the OSSDs from monitoring circuit 1 (OSSD 1.1, OSSD 1.2) and monitoring circuit 2 (OSSD 2.1, OSSD 2.2) are in the ON state. The signal outputs from monitoring circuit 1 (M1) and monitoring circuit 2 (M2) are LOW.

If sensor 2 is not connected, then all specifications for monitoring circuit 2 can be ignored.
If the control unit is being operated with only one sensor (mode: “monitoring circuit 2 inactive”), then it needs to be connected to terminals Y1 and Y2. Termi- nals Y3 and Y4 for sensor 2 remain unconfigured.

Sensor activated

If sensor 1 is activated, then the OSSDs from monitoring circuit 1 are in the OFF state, signal output M1 is HIGH. The yellow LED “S1” is lit up. If sensor 2 is acti- vated, then the OSSDs from monitoring circuit 2 are in the OFF state, signal out- put M2 is HIGH. The yellow LED “S2” is lit up. If sensor 1 and sensor 2 are activat- ed, then the OSSDs from monitoring circuit 1 and monitoring circuit 2 are in OFF state, signal outputs M1 and M2 are HIGH. The yellow LEDs “S1” and “S2” are lit up.