Mitsubishi Electric MELSERVO MR-J2-A Product Specifications And Installation Manual page 146

3.WIRING
(3) Timing charts
(a) Servo-on signal (SON) ON/OFF
Tb (ms) after the servo-on (SON) signal is switched off, the servo lock is
released and the servo motor coasts. If the electromagnetic brake is made
valid in the servo lock status, the brake life may be shorter. Therefore, when
using the electromagnetic brake in a vertical lift application or the like, set
Tb to about the same as the electromagnetic brake operation delay time to
prevent a drop.
Servo motor speed
ON
Base circuit
OFF
Invalid(ON)
Electromagnetic
brake interlock(MBR)
Valid(OFF)
ON
Servo on (SON)
OFF
(b) Emergency stop signal (EMG) ON/OFF
Servo motor speed
Base circuit
Electromagnetic
brake interlock (MBR)
Emergency stop (EMG)
Coasting
0 r/min
(80ms)
(80ms)
Dynamic brake
Dynamic brake
Electromagnetic brake
(10ms)
ON
OFF
Invalid (ON)
Electromagnetic brake
operation delay time
Valid (OFF)
Invalid (ON)
Valid (OFF)
3– 61
Tb
Electromagnetic brake
operation delay time
Electromagnetic brake
Electromagnetic brake release
(180ms)
(180ms)
3