LG RCAW Operation & Maintenance Manual page 65

In the control panel, the PLC is installed as a central control station. The PLC is assembled with the HMI unit in a black
case. The PLC is supplied 24VDC power from the SMPS (Switched Mode Power Supply) on the right side.
Control fuse
The relay is to confirm proper 220VAC power supply and start/stop switch which is installed on the door is positioned at
start. The ventilation fan of the control panel runs permanently after power on.
Fig. 44
Operation & Maintenance Manual 65
Service
Switched Mode
Power Supply
Control Relay