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3. SIGNALS AND WIRING
3.9 Servo motor with electromagnetic brake
CAUTION
Note the following when the servo motor equipped with electromagnetic brake is used:
1) In the device setting of the Servo Configuration software, make the electromagnetic brake interlock
(MBR) available.
2) 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.
3) The brake will operate when the power (24VDC) switches off.
4) While the reset (RES) is on, the base circuit is shut off. When using the servo motor with a vertical
shaft, use the electromagnetic brake interlock (MBR).
5) Turn off the servo-on (SON) after the servo motor has stopped.
(1) Connection diagram
Servo amplifier
(2) Setting
1) In the device setting of the Set-up Software, make the electromagnetic brake interlock (MBR)
available.
2) Using parameter No. 33 (electromagnetic brake sequence output), set a time delay (Tb) at servo-off
from electromagnetic brake operation to base circuit shut-off as in the timing chart shown in (3) in
this section.
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Configure the electromagnetic brake operation circuit so that it is activated not only
by the servo amplifier signals but also by an external forced stop (EMG).
Contacts must be open when
servo-on (SON) is off or when a
trouble (ALM) is present and when an
electromagnetic brake interlock (MBR).
The electromagnetic brake is provided for holding the motor shaft. Do not use it for
ordinary braking.
Before performing the operation, be sure to confirm that the elecromagnetic brake
operates properly.
POINT
For the power supply capacity, operation delay time and other
specifications of the electromagnetic brake, refer to the Servo Motor
Instruction Manual.
VDD
COM
MBR
RA
search engine
Servo motor
RA
EMG
Electromagnetic brake
Forced
RA
stop
B1
Z
24VDC
B2
3 - 30
Circuit must be
opened during
forced stop (EMG).
24VDC
Servo motor
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