Filter
Top Products
3 - 73
3. SIGNALS AND WIRING
3.11 Servo motor with an electromagnetic brake
3.11.1 Safety precautions
CAUTION
Configure an electromagnetic brake circuit so that it is activated also by an external
emergency stop switch.
B
U
SON RA
Contacts must be opened by an
emergency stop switch.
Contacts must be opened by servo-on
(SON) OFF, trouble (ALM) and
electromagnetic brake interlock (MBR).
24VDC
Servo motor
Electromagnetic brake
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.
Do not use the 24VDC interface power supply for the electromagnetic brake. Always
use the power supply designed exclusively for the electromagnetic brake.
Otherwise, a fault may occur.
POINT
Refer to the Servo Motor Instruction Manual (Vol.2) for specifications such as the
power supply capacity and operation delay time of the electromagnetic brake.
Refer to the Servo Motor Instruction Manual (Vol.2) for the selection of a surge
absorber for the electromagnetic brake.
Note the following when the servo motor with an electromagnetic brake is used.
1) Set " 1" in parameter No.PA04 to make the electromagnetic brake interlock (MBR) valid.
2) The brake will operate when the power (24VDC) switches off.
3) 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).
4) Switch off the servo-on (SON) after the servo motor has stopped.
3.11.2 Setting
(1) Set " 1" in parameter No.PA04 to make the electromagnetic brake interlock (MBR) valid.
(2) Using parameter No.PC16 (electromagnetic brake sequence output), set a delay time (Tb) at servo-off from
electromagnetic brake operation to base circuit shut-off as in the timing chart shown in section 3.11.3(1).