Mitsubishi melservo-j2 series Instruction Manual page 67

3. SIGNALS AND WIRING
(3) Timing charts
(a) Servo on signal command (from controller) ON/OFF
Tb (ms) after servo on (SON) is switched off, 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.
For use in vertical lift and similar applications, therefore, set Tb to the time which is about equal to
the electromagnetic brake operation delay time and during which the load will not drop.
Servo motor speed
Base circuit
Electromagnetic
brake interlock(MBR)
Servo-on(SON)
(b) Emergency stop signal (EMG) ON/OFF
Servo motor speed
Base circuit
Electromagnetic
brake interlock (MBR)
Emergency stop (EMG)
0 r/min
(80ms)
ON
OFF
(80ms)
Invalid(ON)
Valid(OFF)
ON
OFF
Dynamic brake
(10ms)
ON
OFF
Invalid (ON)
Valid (OFF)
Invalid (ON)
Valid (OFF)
Coasting
Tb
Electromagnetic brake
operation delay time
Dynamic brake
Electromagnetic brake
Electromagnetic brake
Electromagnetic brake release
Electromagnetic brake
operation delay time
3 - 30
(180ms)
(180ms)