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4 use of servo motor with electromagnetic brake, Absolute position detection system – MITSUBISHI ELECTRIC MELSERVO MR-J2S- A User Manual

Page 326

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15 - 19

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 (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 (MBR).

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

80 [ms]

20 [ms]

Tb

80 [ms]

20 [ms]

Tb

Power
supply

Servo-on
(SON)

ABS transfer mode
(ABSM)

ABS request
(ABSR)

ABS transmission
data ready
(ABST)

Send (ABS) data

Base circuit

Ready
(RD)

Electromagnetic
brake interlock
(MBR)

Electromagnetic
brake torque

During transmission

of ABS

During transmission

of ABS

ABS data

ABS data