Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 433

15. MR-J3W-0303BN6 SERVO AMPLIFIER
(2) Timing chart
(a) Servo-on command (from controller) on/off
When servo-on command is turned off, the servo lock will be released after Tb [ms], and the servo
motor will coast. If the electromagnetic brake is enabled during servo-lock, the brake life may be shorter.
When using the electromagnetic brake in a vertical lift application or the like, set delay time (Tb) to about
the same as the electromagnetic brake operation delay time to prevent a drop.
Servo motor speed 0 r/min
Base circuit
Electromagnetic
(Note 1) ON
brake interlock
(MBR-A/MBR-B)
Servo-on command
(from controller)
Ready-on command
(from controller)
Operation command
0 r/min
(from controller)
Release
Electromagnetic
brake
Activate
Note 1. ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated.
2. Electromagnetic brake is released after delaying for the release delay time of electromagnetic brake and operation time of external
circuit relay. For the release delay time of electromagnetic brake, refer to "Servo Motor Instruction Manual (Vol. 2)".
3. Give the operation command from the controller after the electromagnetic brake is released.
(95ms)
ON
OFF
(95ms)
OFF
ON
OFF
ON
OFF
Release delay time and external relay (Note 2)
(Note 3)
15 - 28
Coasting
Tb
Electromagnetic
brake operation
delay time