Servo Motor With An Electromagnetic Brake; Safety Precautions - Mitsubishi Electric MR-J4-*B-RJ010 Series Instruction Manual

3. SIGNALS AND WIRING

3.2 Servo motor with an electromagnetic brake

3.2.1 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) Turn off the servo-on command 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.
(2) Setting
In [Pr. PC02 Electromagnetic brake sequence output], set the time delay (Tb) from electromagnetic
brake operation to base circuit shut-off at a servo-off as in the timing chart in section 3.2.2.
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 "Servo Motor Instruction Manual (Vol. 3)" for specifications such as the
power supply capacity and operation delay time of the electromagnetic brake.
Refer to "Servo Motor Instruction Manual (Vol. 3)" 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
MBR ALM
RA1 (Malfaunction)
3 - 6
Contacts must be opened
with the EMG stop switch.
24 V DC
B1
(Note 1)
U
B2
Servo motor
B