Servo Motor With Electromagnetic Brake - Mitsubishi Electric MELSERVO-J2-Super Series Instruction Manual

4. SIGNALS AND WIRING

4.9 Servo motor with electromagnetic brake

CAUTION
Note the following when the servo motor equipped with electromagnetic brake is used to prevent a drop in
a vertical lift application or to ensure double safety at a forced stop.
1) In the device setting of the Servo Configuration software, make the electromagnetic brake interlock
(RXn6) available.
2) Do not share the 24VDC interface power supply between the interface and electromagnetic brake.
Always use the power supply designed exclusively for the electromagnetic brake.
3) The brake will operate when the power (24VDC) switches off.
4) While the reset (RY(n+1)A or RY(n+3)A) is on, the base circuit is shut off. When using the servo
motor with a vertical shaft, use the electromagnetic brake interlock (RXn6).
5) Turn off the servo-on (RYn0) after the servo motor has stopped.
(1) Connection diagram
Servo amplifier
VDD
COM
MBR
(2) Setting
1) In the device setting of the Servo Configuration Software, make the electromagnetic brake interlock
(RXn6) available.
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.
Configure the electromagnetic brake operation circuit so that it is activated not only
by the servo amplifier signals but also by an external forced stop (EMG).
Contacts must be open when
servo-on (RYn0) is off or when a
trouble (RY(n+1)A or RX(n+3)A) is
present and when an electromagnetic
brake interlock (RXn6).
The electromagnetic brake is provided for holding the motor shaft. Do not use it for
ordinary braking.
POINT
For the power supply capacity, operation delay time and other
specifications of the electromagnetic brake, refer to the Servo Motor
Instruction Manual.
24VDC
RA
Servo motor
RA EMG
Electromagnetic brake
Forced
RA
stop
B1
B2
4 - 25
Circuit must be
opened during
forced stop (EMG).
24VDC
Servo motor