Servo Motor With An Electromagnetic Brake; Safety Precautions - Mitsubishi Electric MELSERVO-JE MR-JE-70A Instruction Manual

3. SIGNALS AND WIRING

3.10 Servo motor with an electromagnetic brake

3.10.1 Safety precautions

CAUTION
Note the following when the servo motor with an electromagnetic brake is used.
1) The brake will operate when the power (24 V DC) turns off.
2) The status is base circuit shut-off during RES (Reset) on. When you use the motor in vertical axis
system, use MBR (Electromagnetic brake interlock).
3) Turn off SON (Servo-on) after the servo motor stopped.
(1) Connection diagram
Servo amplifier
Note 1. Create the circuit in order to shut off by interlocking with the emergency stop switch.
2. Do not use the 24 V DC interface power supply for the electromagnetic brake.
Configure an electromagnetic brake circuit so that it is activated also by an
external EMG stop switch.
Contacts must be opened when ALM (Malfunction)
or MBR (Electromagnetic brake interlock) turns off.
Electromagnetic brake
The electromagnetic brake is provided for holding purpose and must not be used
for ordinary braking.
Before operating the servo motor, be sure to confirm that the electromagnetic
brake operates properly.
Do not use the 24 V DC interface power supply for the electromagnetic brake.
Always use the power supply designed exclusively for the electromagnetic brake.
Otherwise, it may cause a malfunction.
POINT
Refer to "HF-KN/HF-SN Servo Motor Instruction Manual" for specifications such
as the power supply capacity and operation delay time of the electromagnetic
brake.
Refer to "HF-KN/HF-SN Servo Motor Instruction Manual" for the selection of a
surge absorber for the electromagnetic brake.
(Note 2)
24 V DC
DOCOM
24 V DC
MBR
RA1
Servo motor
RA
B
U
MBR ALM
RA1 (Malfaunction)
3 - 57
Contacts must be opened with the
EMG stop switch.
24 V DC
B1
(Note 1)
U
B2
Servo motor
B