Servo Motor With Electromagnetic Brake; Safety Precautions - Mitsubishi Electric MR-J3-10B Instruction Manual

3. SIGNALS AND WIRING

3.11 Servo motor with electromagnetic brake

3.11.1 Safety precautions

CAUTION
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Note the following when the servo motor equipped with electromagnetic brake is used :
1) 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.
2) The brake will operate when the power (24VDC) switches off.
3) Switch off the servo-on command after the servo motor has stopped.
(1) Connection diagram
Servo amplifier
Note. Configure up the power supply circuit in which the dynamic brake acts after detection of alarm occurrence on the
controller side.
(2) Setting
In parameter No.PC02 (electromagnetic brake sequence output), set the time delay (Tb) from
electromagnetic brake operation to base circuit shut-off at a servo off time as in the timing chart in 3.11.2 in
this section.
Configure the electromagnetic brake circuit so that it is activated not only by the
interface unit signals but also by a forced stop (EM1).
Contacts must be open when
servo-off, when an alarm occurrence
and when an electromagnetic brake
interlock (MBR).
The electromagnetic brake is provided for holding purpose and must not be used
for ordinary braking.
POINT
Refer to the Servo Motor Instruction Manual for specifications such as the
power supply capacity and operation delay time of the electromagnetic brake.
DC24V
DOCOM
DICOM
24VDC
MBR RA1
Servo motor
RA EM1
Electromagnetic brake
(Note)
Forced
MBR Servo
RA1 stop
alarm
B1
B2
3 - 31
Circuit must be
opened during
forced stop (EM1).
24VDC
Servo motor