Servo Motor With An Electromagnetic Brake; Connection Diagram - Mitsubishi Electric Melservo-Jet MR-JET Series User Manual

3.7

Servo motor with an electromagnetic brake

Precautions
• For specifications such as the power supply capacity and operation delay time of the electromagnetic brake, and for
selecting the surge absorber for the electromagnetic brake, refer to the following.
Rotary Servo Motor User's Manual (HG-KNS/HG-SNS)
• The electromagnetic brake on the servo motor is designed to hold the motor shaft. Do not use it for normal braking.
• Incorrect wiring, service life, or the mechanical structure (e.g. when coupled via a timing belt) may cause the
electromagnetic brake to be unable to hold the motor shaft. To ensure safety, install a stopper on the machine side.
• If it is assumed that a hazardous situation may arise when the equipment power is off or a product malfunction occurs, use
a servo motor with an electromagnetic brake or provide an external brake system for holding purpose to prevent such
hazard.
• Configure an electromagnetic brake circuit that is interlocked with an external emergency stop switch.
• Before operating the servo motor, be sure to confirm that the electromagnetic brake operates properly.
• For the power supply of the electromagnetic brake, use the power supply designed exclusively for the electromagnetic
brake.
• If using EM2 (Forced stop 2), use MBR (Electromagnetic brake interlock) for operating the electromagnetic brake.
• If using the servo motor with the electromagnetic brake, the electromagnetic brake will operate when the power (24 V DC)
turns off.
• If using the servo motor with the electromagnetic brake, turn off the servo-on command after the servo motor stops.

Connection diagram

Servo amplifier
24 V DC
DOCOM
MBR
RA1
*1 Configure a circuit which interlocks with an emergency stop switch to shut off.
*2 Do not use the 24 V DC interface power supply for the electromagnetic brake.
MBR
*2
RA1
24 V DC
ALM
B1
*1
(Malfunction)
U
B2
3.7 Servo motor with an electromagnetic brake
Servo motor
B
3 SIGNALS AND WIRING
3
37