Mitsubishi Electric MELSERVO MR-J2S- A Instruction Manual page 102

3. SIGNALS AND WIRING
(3) Timing charts
(a) Servo-on (SON) command (from controller) 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
Base circuit
Electromagnetic
brake (MBR)
Servo-on(SON)
(b) Emergency stop (EMG) ON/OFF
Servo motor speed
Base circuit
Electromagnetic
brake interlock (MBR)
Emergency stop (EMG)
0 r/min
(60ms)
ON
OFF
(80ms)
Invalid(ON)
Valid(OFF)
ON
OFF
Dynamic brake
(10ms)
ON
OFF
Invalid (ON)
Electromagnetic brake
operation delay time
Valid (OFF)
Invalid (ON)
Valid (OFF)
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Coasting
Tb
Electromagnetic brake
operation delay time
Dynamic brake
Electromagnetic brake
Electromagnetic brake
Electromagnetic brake release
(180ms)
(180ms)