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4.2 Precautions on Wiring Main Circuit
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Precautions on wiring
To avoid mistakes in wiring and operation, be sure to observe the following guides.
(Failure to do so may damage the unit.)
· Always connect the power supply to input terminals (R/L1, S/L2, T/L3)(1-Phase
200V input terminals L1, L2), and connect the motor to output terminals (U, V, W).In
addition, connect the output terminals (U, V, W) in correct order. Otherwise the motor
will rotate reversely.
· Use round crimp terminals with sleeve for power supply and motor connections.
Select crimp terminals according to wire sizes and screw sizes.
· After wiring main circuit, confirm the tightening condition of terminals.
· Main circuit must be wired prior to control circuit. Otherwise, re-tightening operation is
not possible after control circuit wiring is completed.
· When connecting directly to a transformer of large capacity (500kVA or more), always
install an AC reactor on the input side of the inverter.
Note 1) Maximum number of terminal blocks for main circuit: 2.
Note 2) It is recommended to use teflon insulated wire (600V, Class 2, continuous
maximum allowable operating temperature up to 75
℃
) for main circuit wiring.
Note 3) Use wires with larger diameter if the wiring distance is long.
Note 4) If the overcurrent trip of the circuit breaker is magnetic type, the device could
become overheated due to higher harmonics. Use a load rate of 50% or lower
in this case.
Note 5) Do not use a circuit breaker for motor.
Note 6) Always connect protective devices against overcurrent, short-circuit and
current leakage on the input side.
Summary of Contents for AMK3000P22
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