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2 Wiring and Connection
MITSUBISHI CNC
2 - 2
1. Wiring work must be done by a qualified technician.
2. Wait at least 15 minutes after turning the power OFF and check the voltage with a tester, etc.,
before starting wiring. Failure to observe this could lead to electric shocks.
3. Securely ground the drive units and servo/spindle motor.
4. Wire the drive units and servo/spindle motor after installation. Failure to observe this could lead to
electric shocks.
5. Do not damage, apply forcible stress, place heavy items on the cables or get them caught. Failure
to observe this could lead to electric shocks.
6. Always insulate the power terminal connection section. Failure to observe this could lead to electric
shocks.
1. Correctly and securely perform the wiring. Failure to do so could result in runaway of the servo/
spindle motor or injury.
2. Do not mistake the terminal connections.
3. Do not mistake the polarity ( + , - ). Failure to observe this item could lead to ruptures or damage,
etc.
4. Do not mistake the direction of the diodes for the surge absorption installed on the DC relay for the
motor brake and contactor (magnetic contactor) control. The signal might not be output when a
failure occurs.
5. Electronic devices used near the drive units may receive magnetic obstruction. Reduce the effect
of magnetic obstacles by installing a noise filter, etc.
6. Do not install a phase advancing capacitor, surge absorber or radio noise filter on the power line
(U, V, W) of the servo/spindle motor.
7. Do not modify this unit.
8. If the connectors are connected incorrectly, faults could occur. Make sure that the connecting
position and the connection are correct.
9. When grounding the motor, connect to the protective grounding terminal on the drive units, and
ground from the other protective grounding terminal.(Use one-point grounding)
Do not separately ground the connected motor and drive unit as noise could be generated.
DANGER
CAUTION
Servo drive unit
Servo drive unit
Control output
signal
Control output
signal
RA
COM
(24VDC)
COM
(24VDC)
RA