Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 225

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
b) When control function of magnetic contactor is enabled and the status returns to ready-off
The magnetic contactor of the converter unit turns off with servo-off, and the main circuit
power supply shuts off.
Servo motor
speed
Drive unit
Control circuit
power supply
Converter unit
Control circuit
power supply
Main circuit
power supply
Base circuit
Electromagnetic
brake interlock
(MBR)
Servo-on command
(from servo system
controller)
Ready-on command
(from controller)
Position command
(Note 3)
Note 1. When setting up an electromagnetic brake at customer's side, make up a sequence which will
0 r/min
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(Note 1) ON
OFF
ON
OFF
ON
OFF
0 r/min
operate the electromagnetic brake as follow using the electromagnetic brake interlock (MBR).
ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated
2. Give a position command after the external electromagnetic brake is released.
3. For the position control mode.
(3 s)
(Note 2)
5 - 24
(3 s)