Mitsubishi Electric MR-J2S-A Instruction Manual page 104

3. SIGNALS AND WIRING
(2) Setting
1) Set " 1 " in parameter No.1 to make the electromagnetic brake interlock (MBR) valid.
2) Using parameter No. 33 (electromagnetic brake sequence output), set a time delay (Tb) at servo-off
from electromagnetic brake operation to base circuit shut-off as in the timing chart shown in (3) in
this section.
(3) Timing charts
(a) Servo-on (SON) command (from controller) ON/OFF
Tb [ms] after the servo-on (SON) signal is switched off, the servo lock is released and the servo
motor coasts. If the electromagnetic brake is made valid in the servo lock status, the brake life may
be shorter. Therefore, when using the electromagnetic brake in a vertical lift application or the
like, set Tb to about the same as the electromagnetic brake operation delay time to prevent a drop.
Servo motor speed 0 r/min
ON
Base circuit
OFF
Electromagnetic
(Note 1) ON
brake interlock
(MBR)
OFF
ON
Servo-on (SON)
OFF
Position command
(Note 4)
0 r/min
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 the Servo Motor Instruction Manual.
3. After the electromagnetic brake is released, give the position command from the controller.
4. For the position control mode.
(60ms)
(80ms)
(Note 3)
Release delay time and external relay (Note 2)
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Coasting
Tb
Electromagnetic
brake operation
delay time