Mitsubishi Electric MELIPM Series Instruction Manual page 5

4. Wiring
Any person who is involved in the wiring of this equipment should be fully
competent to do the work. Otherwise, an electric shock or fire can occur.
Install a no-fuse breaker or earth leakage circuit breaker. Otherwise, a drive
unit failure can cause large currents to flow, resulting in a fire.
Always install the unit before wiring. Otherwise, an electric shock or fire can
occur.
Before restarting wiring after power-on, make sure that the motor is at a stop,
wait for more than 10 minutes after switching power off, and confirm that the
DC voltage across the DC terminals P/+ and N/- is low enough to do the
work. Immediately after power-off, the DC terminals P/+, N/- are charged
with more than 200V (residual voltage of the internal capacitor). Therefore,
an electric shock may occur.
Even after power-off, the motor connection terminals U, V, W have high
voltages while the motor is running. Always start wiring after confirming that
the motor has stopped. Not doing so can cause an electric shock.
Earth the drive unit. Not doing so can cause an electric shock or fire.
Make sure that the input power supply voltage matches the rated voltage
specifications. Mismatch can cause a fire or accidents.
Check the terminal layout and terminal symbols to ensure that connections
are correct. Wrong connections can cause a fire or accidents.
Do not connect a power supply to the motor connection terminals U, V, W.
Doing so can cause a fire or accidents.
Connect the motor connection terminals U, V, W to match the motor phase
sequence. Wrong connections can cause accidents due to reverse rotation
of the motor.
Do not connect a resistor across the DC terminals P/+-N/-. Doing so can
cause a fire or accidents.
Take measures to prevent peripheral sensors and equipment from
malfunctioning due to electromagnetic noises. Not doing so can cause
accidents.
Take measures to prevent peripheral power capacitors and generators from
overheating or being damaged due to power harmonics. Not doing so can
cause a fire.
Connect the power capacitor, surge suppressor and radio noise filter (FR-
BIF option) on the power supply side. Connection on the output side can
cause a fire.
WARNING
CAUTION
4
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