Mitsubishi Electric MR-E A Series Instruction Manual page 73

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