Timing Chart - Mitsubishi Electric MR-J4W2-0303B6 Instruction Manual

3. SIGNALS AND WIRING

3.10.2 Timing chart

(1) When you use the forced stop deceleration function
(a) Servo-on command (from controller) on/off
When servo-on command is turned off, the servo lock will be released after Tb [ms], and the servo
motor will coast. If the electromagnetic brake is enabled during servo-lock, the brake life may be
shorter. Therefore, set Tb about 1.5 times of the minimum delay time where the moving part will not
drop down for a vertical axis system, etc.
0 r/min
Servo motor speed
ON
Base circuit
OFF
MBR
ON
(Electromagnetic
(Note 1)
OFF
brake interlock)
ON
Servo-on command
(from controller)
OFF
ON
Ready-on command
(from controller)
OFF
Operation command
(from controller) 0 r/min
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. 3)".
3. Give the operation command from the controller after the electromagnetic brake is released.
POINT
To enable the function, set "2 _ _ _ (initial value)" in [Pr. PA04].
Tb [Pr. PC02 Electromagnetic brake sequence output]
Approx. 95 ms
Approx. 95 ms
(Note 3)
Release delay time and external relay, etc. (Note 2)
3 - 33
Coasting
Operation delay time of
the electromagnetic brake