Timing Charts - Mitsubishi Electric MELSERVO-J3 Series Instruction Manual

4. SIGNALS AND WIRING

4.11.2 Timing charts

(1) Servo-on (RYn0) command (from controller) ON/OFF
Tb [ms] after the servo-on (RYn0) 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 0 r/min
ON
Base circuit
OFF
Electromagnetic
(Note 1) ON
brake interlock
(MBR) OFF
ON
Servo-on(RYn0)
OFF
Forward rotation start
ON
(RYn1) or reverse
OFF
rotation start (RYn2)
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 Servo Motor Instruction Manual (Vol.2).
3. After the electromagnetic brake is released, turn ON the RYn1 or RYn2.
(2) 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.
(95ms)
(95ms)
(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)
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Dynamic brake
Electromagnetic brake
Electromagnetic brake
Electromagnetic brake release
Electromagnetic brake
operation delay time
Coasting
Tb
Electromagnetic
brake operation
delay time
(210ms)
(210ms)