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3. SIGNALS AND WIRING
3.7 Servo motor with electromagnetic brake
CAUTION
Configure the electromagnetic brake operation circuit so that it is activated not only
by the interface unit signals but also by an external forced stop (EM1).
EM1
RA
24VDC
Contacts must be open when
servo-off, when an alarm occurrence
and when an electromagnetic brake
interlock (MBR).
Electromagnetic brake
Servo motor
Circuit must be
opened during
forced stop (EM1).
The electromagnetic brake is provided for holding purpose and must not be used
for ordinary braking.
Before performing the operation, be sure to confirm that the electromagnetic brake
operates properly.
POINT
Refer to the Servo Motor Instruction Manual for specifications such as the
power supply capacity and operation delay time of the electromagnetic
brake.
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.
4) Using the IFU parameter No.10, select the axis number of the drive unit which uses the
electromagnetic brake interlock (MBR).
(1) Connection diagram
Interface unit
or
extension IO unit
Servo motor
Forced
stop
24VDC
SG
MBR
RA
B2
B1
24VDC
RA
(2) Setting
In DRU parameter No.21 (electromagnetic brake sequence output), set the delay time (Tb) from
electromagnetic brake operation to base circuit shut-off at a servo off time as in the timing chart in (4)
in this section.
Содержание MELSERVO-J2M series
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