Mitsubishi Electric MR-J4-*B-RJ010 Series Instruction Manual page 5

(2) Wiring
Wire the equipment correctly and securely. Otherwise, the servo motor may operate unexpectedly.
Do not install a power capacitor, surge killer, or radio noise filter (FR-BIF-(H) option) on the servo
amplifier output side.
To avoid a malfunction, connect the wires to the correct phase terminals (U, V, and W) of the servo
amplifier and servo motor.
Connect the servo amplifier 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.
Servo amplifier
The connection diagrams in this installation guide are shown for sink interfaces, unless stated otherwise.
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.
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 U, V, W, or CN2 of the servo amplifier may cause a
malfunction.
(3) Test run and adjustment
Before operation, check the parameter settings. Improper settings may cause some machines to operate
unexpectedly.
Never make a drastic adjustment or change to the parameter values as doing so will make the operation
unstable.
Do not close to moving parts at servo-on status.
(4) Usage
When it is assumed that a hazardous condition may occur due to a power failure or product malfunction,
use a servo motor with an external brake to prevent the condition.
Do not disassemble, repair, or modify the equipment.
CAUTION
Servo motor
U
U
V
V
M
W
W
Servo amplifier
24 V DC
DOCOM
Control output
RA
signal
For sink output interface
CAUTION
CAUTION
Servo amplifier
U
V
W
Servo amplifier
DOCOM
Control output
signal
For source output interface
A - 4
Servo motor
U
V
M
W
24 V DC
RA