Mitsubishi Electric MR-J2S-CP Instruction Manual page 83

3. SIGNALS AND WIRING
(3) Timing charts
(a) Servo-on (SON) 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 delay time (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 0 r/min
ON
Base circuit
OFF
Electromagnetic
(Note 1)
ON
brake interlock
(MBR)
OFF
ON
Servo-on(RYn0)
OFF
Forward rotation start
ON
(ST1) or reverse rotation
OFF
start (ST2)
Release
Electromagnetic
brake
Activate
Note 1. ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated.
2. Electromagnetic brake is released after delaying for the release delay time of electromagnetic brake and operation time of
external circuit relay. For the release delay time of electromagnetic brake, refer to the Servo Motor Instruction Manual.
3. After the electromagnetic brake is released, turn ON the ST1 or ST2.
(b) Forced stop (EMG) ON/OFF
Servo motor speed
Base circuit
Electromagnetic
brake interlock (MBR)
Forced stop (EMG)
Note. ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated.
(60ms)
(80ms)
(Note 3)
Release delay time and external relay (Note 2)
Dynamic brake
Forward
rotation
0r/min
(10ms)
ON
OFF
(Note) ON
OFF
Invalid (ON)
Valid (OFF)
Dynamic brake
Electromagnetic brake
Electromagnetic brake
Electromagnetic brake release
Electromagnetic brake
operation delay time
3 - 34
Coasting
Tb
Electromagnetic
brake operation
delay time
(180ms)
(180ms)