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PLC on the control panel is installed on the central control station. PLC is assembled as HMI in the
black box. PLC receives 24V DC power from the right SMPS (Switched mode power).
Ventilation Fan
Control fuse
Thermostat
Relay is to check the appropriateness of 220V AC and the Start/Stop/Remote control switch
installed on the door is located at the starting part. The ventilation fan of the control panel operates
permanently after the power is turned ON.
Fig. 39
- 63 -
Control Relay
SMPS
(Switching Mode
Power Supply)
Operation & Maintenance Manual
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