Mitsubishi Electric MR-J4, Instruction Manual

Page: 687 / 794

18. MR-J4-03A6 SERVO AMPLIFIER
18 - 46
18.4.3 Wiring check
(1) Power supply system wiring
Before switching on the main circuit and control circuit power supplies, check the following items.
(a) Power supply system wiring
The power supplied to the power input terminals (24/0/PM) of the servo amplifier should satisfy the
defined specifications. (Refer to section 18.1.3.)
(b) Connection of servo amplifier and servo motor
1) The servo amplifier power output (U/V/W) should match in phase with the servo motor power
input terminals (U/V/W).
Servo amplifier Servo motor
M
U
V
W
U
V
W
2) The power supplied to the servo amplifier should not be connected to the power outputs (U/V/W).
Doing so will fail the connected servo amplifier and servo motor.
Servo amplifier Servo motor
24
0 PM
U V W
M
24 V DC
48 V DC
3) The noiseless grounding terminal ( ) of the servo motor should be connected to the E terminal
of the servo amplifier.
Servo amplifier Servo motor
M E
4) The CN2 connector of the servo amplifier should be connected to the encoder of the servo motor
securely using the encoder cable.
(2) I/O signal wiring
(a) The I/O signals should be connected correctly.
Use DO forced output to forcibly turn on/off the pins of the CN1 connector. This function can be used
to perform a wiring check. In this case, switch on the control circuit power supply only.
For details of I/O signal connection, refer to section 18.3.5.
(b) A voltage exceeding 24 V DC is not applied to the pins of the CN1 connector.
(c) Between plate and DOCOM of the CN1 connector should not be shorted.
Servo amplifier
DOCOM
Plate
CN1