Hitachi SJ Series User Manual page 6

Chapter 1 Chapter 1
1.4.3 1. Precautions for Wiring Precautions for Wiring Precautions for Wiring
Otherwise, you run the risk of electric Otherwise, you run the risk of electric Otherwise, you run the risk of electric Otherwise, you run the risk of electric
shock or fire. fire.
Electric
shock
Fire
Be sure to ground the inverter. Be sure to ground the inverter. Be sure to ground the inverter.
Entrust wiring work to a qualified electrician. Entrust wiring work to a qualified electrician. Entrust wiring work to a qualified electrician. Entrust wiring work to a qualified electrician.
Before wiring, be sure to turn off the power Before wiring, be sure to turn off the power Before wiring, be sure to turn off the power Before wiring, be sure to turn off the power
Do
supply and wait for 10 minutes or more. supply and wait for 10 minutes or more. supply and wait for 10 minutes or more.
(Confirm that the Charge lamp on the inverter is (Confirm that the Charge lamp on the inverter is (Confirm that the Charge lamp on the inverter is (Confirm that the Charge lamp on the inverter is
off and the DC voltage between terminals P and off and the DC voltage between off and the DC voltage between
N is 45 V or less.) N is 45 V or less.)
Otherwise, the inverter may fail. Otherwise, the inverter may fail. Otherwise, the inverter may fail.
Failure
Do not pull the wire after wiring. Do not pull the wire after wiring. Do not pull the wire after wiring.
Prohibited Prohibited
Otherwise, you run the risk of injury or Otherwise, you run the risk of injury or Otherwise, you run the risk of injury or Otherwise, you run the risk of injury or
fire.
Injury
Fire
Do not connect AC power supply to any of the Do not connect AC power supply to Do not connect AC power supply to
output terminals (U, V, and W). output terminals (U, V, and W). output terminals (U, V, and W).
Prohibited Prohibited
Make sure that the voltage and frequency of AC Make sure that the voltage and frequency of AC Make sure that the voltage and frequency of AC Make sure that the voltage and frequency of AC
power supply match the rated voltage (AC input power supply match the rated voltage (AC input power supply match the rated voltage (AC input power supply match the rated voltage (AC input
voltage) and frequency of your inverter. voltage) and frequency of your inverter. voltage) and frequency of your inverter.
Do
Otherwise, you run the risk of electric Otherwise, you run the risk of electric Otherwise, you run the risk of electric Otherwise, you run the risk of electric
shock and injury. shock and injury.
Electric Before operating the slide switch SW in the Before operating the slide switch SW in the Before operating the slide switch SW in the Before operating the slide switch SW in the
shock inverter, be sure to turn off the power supply. inverter, be sure to turn off the power supply. inverter, be sure to turn off the power supply. inverter, be sure to turn off the power supply.
Injury
Since the inverter supports two modes of Since the inverter supports two modes of Since the inverter supports two modes of Since the inverter supports two modes of
cooling-fan operation, the inverter power is not fan operation, the inverter power is not fan operation, the inverter power is not fan operation, the inverter power is not
always off, even when the cooling fan is always off, even when the cooling fan is always off, even when the cooling fan is always off, even when the cooling fan is
stopped. Before operating the switch, be sure stopped. Before
Do
to turn off the power supply and wait for 10 to turn off the power supply and wait for 10 to turn off the power supply and wait for 10 to turn off the power supply and wait for 10
minutes or more. (Confirm that the Charge minutes or more. (Confirm that the Charge minutes or more. (Confirm that the Charge minutes or more. (Confirm that the Charge
lamp on the inverter is off and the DC voltage lamp on the inverter is off and the DC voltage lamp on the inverter is off and the DC voltage lamp on the inverter is off and the DC voltage
between terminals P and N is 45 V or less.) between terminals P and N is 45 V or less.) between terminals P and N is 45 V or less.) between terminals P and N is 45 V or less.)
Prevent the distribution cable from being Prevent the distribution cable from being Prevent the distribution cable from being
compressed or getting caught to avoid damage compressed or getting caught to avoid damage compressed or getting caught to avoid damage compressed or getting caught to avoid damage
to the cable.
DANGER DANGER DANGER
terminals P and
Warning Warning Warning
any of the
operating the switch, be sure operating the switch, be sure
Safety Instructions/Risks Safety Instructions/Risks Safety Instructions/Risks Safety Instructions/Risks
Otherwise, you run the risk of electric Otherwise, you run the risk of electric Otherwise, you run the risk of electric Otherwise, you run the risk of electric
shock and injury. shock and injury. shock and injury.
Electric Electric
shock shock
Injury Injury
Perform wiring only after installing the inverter. Perform
Do Do
Otherwise, you run the risk of short circuit Otherwise, you run the risk of short circuit Otherwise, you run the risk of short circuit Otherwise, you run the risk of short circuit Otherwise, you run the risk of short circuit
and ground fault. and ground fault. and ground fault.
Short Short
circuit circuit
Do not remove rubber bushings from the wiring Do not remove rubber bushings from the wiring Do not remove rubber bushings from the wiring Do not remove rubber bushings from the wiring Do not remove rubber bushings from the wiring
Ground Ground
section. Otherwise, the edges of the wiring section. Otherwise, the edges of the wiring section. Otherwise, the edges of the wiring section. Otherwise, the edges of the wiring
fault fault
cover may damage the wire. cover may damage the wire. cover may damage the wire.
Prohibited Prohibited
Otherwise, you run the risk of fire. Otherwise, you run the risk of fire. Otherwise, you run the risk of fire.
Do not use a single Do not use a single-phase input. Do not use a single
Fire Fire
Do not connect a resistor directly to any of the Do not connect a resistor directly to any of the Do not connect a resistor directly to any of the Do not connect a resistor directly to any of the Do not connect a resistor directly to any of the
DC terminals (PD, P, and N). DC terminals (PD, P, and N). DC terminals (PD, P, and N).
Do not use the magnetic contactor installed on Do not use the magnetic contactor installed on Do not use the magnetic contactor installed on Do not use the magnetic contactor installed on Do not use the magnetic contactor installed on
the primary and secondary sides of the inverter the primary and secondary sides of the inverter the primary and secondary sides of the inverter the primary and secondary sides of the inverter the primary and secondary sides of the inverter
Prohibited Prohibited
to stop its operation. to stop its operation. to stop its operation.
Tighten each screw and bolt to the specified Tighten each screw and bolt to the specified Tighten each screw and bolt to the specified Tighten each screw and bolt to the specified
torque. torque.
No screws and bolts must be left loose. No screws and bolts must be left loose. No screws and bolts must be left loose. No screws and bolts must be left loose.
Do Do
Connect an earth Connect an earth-leakage breaker to the Connect an earth
input circuit. input circuit.
Use only the power cables, earth Use only the power cables, earth-leakage Use only the power cables, earth Use only the power cables, earth
breaker, and magnetic contactors that have the breaker, and magnetic contactors that have the breaker, and magnetic contactors that have the breaker, and magnetic contactors that have the breaker, and magnetic contactors that have the
specified capacity (ratings). specified capacity (ratings). specified capacity (ratings).
Otherwise, you run the risk of damage to Otherwise, you run the risk of damage to Otherwise, you run the risk of damage to Otherwise, you run the risk of damage to Otherwise, you run the risk of damage to
the inverter and motor burnout. the inverter and motor burnout. the inverter and motor burnout. the inverter and motor burnout.
Burnout Burnout
Do not operate the inverter when an output Do not operate the inverter when an output Do not operate the inverter when an output Do not operate the inverter when an output
phase is lost (output phase loss). phase is lost (output phase loss). phase is lost (output phase loss). phase is lost (output phase loss).
Prohibited Prohibited
1-5
wiring only after installing the inverter. wiring only after installing the inverter. wiring only after installing the inverter.
phase input.
leakage breaker to the power power