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User Manual
EM303A General Purpose Inverter
z Wiring
Danger
1． Always turn off the input power supply before wiring.
Otherwise, an electric shock or fire may occur.
2． Wiring must be performed by authorized and qualified personnel.
Otherwise, an electric shock or fire may occur.
3． Be sure the ground terminals earthed.
Otherwise, an electric shock or fire may occur.
4． Always verify the function of emergency stop terminal in work after
connecting.
Otherwise, it may result in injury. (User takes the responsibilities of wiring).
5． Never touch the input or output terminals directly with bare hands, or
connect the terminals of inverter to the housing, or connect the input
terminals to output terminals.
Otherwise, an electric shock or short circuit may occur.
Caution
1． Always confirm if the voltage of AC input power supply satisfies the rated
voltage of inverter.
Otherwise, it may result in injury and fire.
2． Never perform voltage withstanding test.
Otherwise, semi-conductors and other devices can be damaged.
3． Connect braking resistor or braking unit according to required wiring.
Otherwise, a fire may occur.
4． Tighten terminals with screw drivers of specified torque.
Otherwise, a fire may occur.
5． Never connect input power supply cable to output terminals U, V, and W.
The inverter will be damaged if voltage is applied to the output terminals.
6． Never connect phase-shifting capacitor and LC/RC noise filter to output
circuits.
Otherwise, the inverter will be damaged.
7． Never connect the solenoid switch and electromagnetic contactor to output
circuits.
When inverter is with load, surge current, which is produced by the operation of
solenoid switch or electromagnetic contactor, will trigger the overcurrent
protection circuit to act. Sometimes the inverter will be damaged.
8． Never take off the interior wires of inverter.
Otherwise, the inverter will be damaged.
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