Mitsubishi Electric MELSERVO-J4 MR-J4 A Series Instruction Manual page 105

4. STARTUP
4.1.2 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 (L1, L2, L3, L11, and L21) of the servo amplifier
should satisfy the defined specifications. (Refer to section 1.3)
(b) Connection of servo amplifier and servo motor
1) The servo amplifier power output (U, V, and W) should match in phase with the servo motor
power input terminals (U, V, and W).
2) The power supplied to the servo amplifier should not be connected to the power outputs (U, V,
and W). To do so will fail the connected servo amplifier and servo motor.
3) The grounding terminal of the servo motor is connected to the PE terminal of the servo amplifier.
(c) When option and auxiliary equipment are used
1) When you use a regenerative option for amplifiers under 5 kW for 200 V class
The lead wire between P+ and D terminal of CNP2 connector (3.5 kW or less) or TE3 terminal
block (5 kW) should not be connected.
The regenerative option should be connected to P+ terminal and C terminal.
A twisted cable should be used. (Refer to section 11.2.4)
2) When you use a regenerative option for amplifiers under 7 kW for 200 V class
The lead wire of built-in regenerative resistor connected to P+ terminal and C terminal should
not be connected.
The regenerative option should be connected to P+ terminal and C terminal.
A twisted cable should be used when wiring is over 5 m and under 10 m. (Refer to section
11.2.4)
Servo amplifier
U
U
V
V
W
W
Servo amplifier
U
L1
L2 V
W
L3
Servo amplifier
4 - 2
Servo motor
M
Servo motor
U
V
M
W
Servo motor
M