Mitsumi electronic MR-J3- A Manual De Usuario

 

 

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

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).