Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 228

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
2) When magnetic contactor drive output is enabled and the status returns to ready-off
The magnetic contactor of the resistance regeneration converter unit is turned off with ready-off,
and the main circuit power supply is shut off.
Servo motor
speed
Drive unit
Control circuit
power supply
Converter unit
Control circuit
power supply
Main circuit
power supply
Base circuit
MBR
(Electromagnetic
brake interlock)
Servo-on command
(from servo system
controller)
Position command
(Note 3)
Note 1. When setting up an electromagnetic brake at customer's side, make up a sequence which will operate
0 r/min
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(Note 1) ON
OFF
ON
OFF
0 r/min
the electromagnetic brake as follow using 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. This is in position control mode.
(3 s)
(Note 2)
5 - 27
(3 s)