15. ABSOLUTE POSITION DETECTION SYSTEM

15.7.4 Use of servo motor with electromagnetic brake

The timing charts at power on/off and servo-on (SON) on/off are given below.

Preset " 1 " in parameter No. 1 to make the electromagnetic brake interlock signal (MBR) usable. When the ABS transfer mode is ON, the electromagnetic brake interlock (MBR) is used as the ABS data bit 1.

Hence, make up an external sequence which will cause the electromagnetic brake torque to be generated by the ABS mode (ABSM) and electromagnetic brake interlock signals.

Power ON supply OFF

Servo-on (SON)

ABS transfer mode (ABSM)

ABS request (ABSR)

Send data ready (TLC)

ON

OFF

ON

OFF

ON

OFF

ON

OFF

During transmission

of ABS

During transmission

of ABS

Send (ABS) data

Base circuit

Ready (RD)

Electromagnetic brake (MBR)

Electromagnetic brake torque

ABS data

 

 

ABS data

 

 

 

 

 

 

 

 

 

 

80

[ms]

80

[ms]

 

 

 

 

 

 

 

 

ON

OFF

20 [ms]

 

20 [ms]

 

 

 

ON

OFF

Tb

 

 

Tb

ON

OFF

ON

OFF

15 - 19

Page 270
Image 270
Mitsubishi Electronics MR-J2S- A instruction manual Use of servo motor with electromagnetic brake