Frenic 5000VG7S Series, Instruction Manual

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2-4
2-3 Electric Connections
Removing the surface cover exposes the terminal blocks. Correctly wire them after reading the following
instructions.
2-3-1 Basic Connections
(1) Connect power supply leads to the main circuit power terminals, L1/R, L2/S, and L3/T. Connecting any
power supply lead to another terminal may fail the inverter. Check that the supply voltage does not exceed
the permissible limit indicated on the nameplate, etc.
(2) The grounding terminal must be grounded to prevent disasters such as electric shock and fire and reduce
the noise.
(3) Use a reliable crimp terminal to connect each lead.
(4) After making connections (wiring), check that:
1) leads are correctly connected,
2) all necessary connections are made, and
3) no terminal or wire is short-circuited or grounded.
(5) When any connection is changed after the inverter is energized:
It takes a long time for the smoothing capacitor in the DC link circuit of the main circuit to be discharged after
the power supply is shut off. After the CHARGE lamp goes off, check with a multimeter or such that the DC
voltage has been reduced to a safe level (25V DC or less). Short-circuiting a circuit in which a voltage
(potential) still remains may generate sparks. Wait until the voltage goes away.
· Always connect the grounding lead.
Failure to do so may lead to electric shock or fire.
·
The wiring work should be performed by qualified persons.
·
Before working, check that the power supply is shut off (open).
Failure to do so may lead to electric shock.
· Do not use any lead size other than specified.
Doing so may lead to fire.