Mitsubishi Electric EW-50A, Installation And Instruction Manual

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WT07936X05
6. Wiring connections
To reduce the risk of malfunction, smoke, fire, or damage to the controller, do not connect
the power cable to the signal terminal block.
To reduce the risk of injury or electric shock, switch off the main power before performing
electrical work.
Electrical work must be performed by qualified personnel in accordance with local
regulations and the instructions provided in this manual. Only use specified cables and
dedicated circuits. Inadequate power source capacity or improper electrical work will
result in electric shock, malfunction, or fire.
To reduce the risk of electric shock, install an overcurrent breaker and an earth leakage
breaker on the power supply. To reduce the risk of electric shock, smoke, or fire, install an
overcurrent breaker for each controller.
Proper grounding must be provided by qualified personnel. Do not connect the protective
ground wire to a gas pipe, water pipe, lightning rod, or telephone wire. Improper grounding
may result in electric shock, smoke, fire, or malfunction due to electrical noise
interference.
To avoid malfunction, do not bundle power cables and signal cables together or place
them in the same metallic conduit.
6-1. Removing/reinstalling the service cover
(1) Removing
1. Unscrew the two fixing screws on the service cover.
2. Remove the service cover.
Service cover
Fixing screws
Openings on the EW-50
Hooks on the service cover