Electric Wiring - Hitachi L Series Service Manual

3-2. Electric wiring

Before connecting the power source to the Electric Chain Hoist, verify that the power source voltage matches
the power requirement of the product.
• Power source connection (Please provide the distribution panel to be used.)
(1) Always connect the power source through a distribution panel (1 main power switch).
(2) Perform the electric wiring shown in the figure.
(3) Connect the ground wire (green / yellow) of the power cable to ground.
When hoisting operation with no load was checked, in the following cases, the power connection is probably
reversed (reversed phase): Movement are performed opposite the pushbutton signal.
* In this case, turn off the power and then switch the connection of the power cable T and R terminals.
Always perform grounding work. Also, install a leakage circuit breaker in the electric path in
addition to ground.
* To prevent electric shock accidents if by chance there should be electricleakage.
1. Power supply
We recommend cable feeding for the power supply.
2. Mounting location
(1) In the case of a suspended-type Electric chain hoist, please remove the paint and rusts from the above
before of mounting.
(2) In the case of a transverse trolley-attached Electric chain hoist, since it is grounded by contact of the trolley
wheels and the rail, do not paint the contact surface. Also, rust preventive paint is applied to the wheels of
the trolley during shipment from the factory, so please remove it from areas that come in contact with the
rails.
3. Please ensure to connect the wiring of the power supply (R, S, T) to the Electric chain hoist through the
distribution board (main power switch). The distribution board to be used should be organized by the customer.
WARNING
R S T
3-phase power
Ground
R S T E
WARNING
For single-phase power
E
Power cable
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Electric Chain
Hoist