Timing Chartsꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ - Mitsubishi Electric MELSERVO-JN Series Instruction Manual

3. SIGNALS AND WIRING
3.11.3 Timing charts
(1) 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 0 r/min
ON
Base circuit
OFF
Electromagnetic
(Note 1) ON
brake interlock
(MBR) OFF
ON
Servo-on (SON)
OFF
Position command
0 r/min
(Note 4)
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 section 12.5.3, 12.6.3.
3. Give a position command after the electromagnetic brake is released.
4. For the position control mode.
(2) Forced stop (EM1) ON/OFF
Servo motor speed
Base circuit
Electromagnetic
brake interlock (MBR)
Forced stop (EM1)
Note 1. ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated.
2. The operation differs from the timing chart of MR-J3- A servo amplifier.
(95ms)
(95ms)
(Note 3)
Release delay time and external relay (Note 2)
Deceleration starts after the forced stop (EM1) turns OFF. (Note 2)
(10ms)
ON
Electromagnetic brake sequence
Tb
output (parameter No. PC09)
OFF
(Note 1) ON
OFF
Invalid (ON)
Valid (OFF)
Dynamic brake
Dynamic brake
Electromagnetic brake
Electromagnetic brake
Electromagnetic brake
operation delay time
3 - 44
Coasting
Tb
Electromagnetic brake
sequence output
(parameter No. PC09)
Electromagnetic
brake operation
delay time
Electromagnetic brake release
(210ms)
(210ms)