Perform wiring correctly and securely. It may cause unexpected movement of the servo motor.
Do not attach a phase-advancing capacitor, surge killer, or radio noise filter (FR-BIF manufactured by
Mitsubishi Electric Corporation) to the output side of the driver.
Connect the driver and servo motor power phases (U, V, W) correctly, as this may cause the servo motor
to malfunction.
Connect the driver power output (U, V, and W) to the servo motor power input (U, V, and W) directly. Do
not let a magnetic contactor, etc. intervene. Otherwise, it may cause a malfunction.
U
Servo motor
M
V
W
U
V
W
U
M
V
W
U
V
W
Servo amplifier
Servo motorServo amplifier
The surge absorbing diode installed to the DC relay for control output should be fitted in the specified
direction. Otherwise, the emergency stop and other protective circuits may not operate.
DOCOM
24 V DC
Servo amplifier
RA
For sink output interface
Control output
signal
DOCOM
Control output
signal
24 V DC
Servo amplifier
RA
For source output interface
When the cable is not tightened enough to the terminal block, the cable or terminal block may generate
heat because of the poor contact. Be sure to tighten the cable with specified torque.
Connecting a servo motor for different axis to the U, V, W, or CN2 may cause a malfunction.
Configure a circuit turn off EM2 or EM1 whenthe main circuitpower supply is turned off to prevernt an
unexpected restart of the driver
To prevent malfunction, avoid bundling power lines (input/output) and signal cables together or running
them in parallel to each other. Separate the power lines from the signal cables.
(3) Test run and adjustment
Before operation, check the parameter settings. Improper settings may cause some machines to perform
unexpected operation.
Never adjust or change the parameter values extremely as it will make operation unstable.
Do not close to moving parts at servo-on status.
Provide an external emergency stop circuit to ensure that operation can be stopped and power switched
off immediately.
Do not disassemble, repair, or modify the equipment.
Before resetting an alarm, make sure that the run signal of the driver is off in order to prevent a sudden
restart. Otherwise, it may cause an accident.
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