Mitsubishi Electric MR-J4W2, Instruction Manual

Page: 70 / 542

3. SIGNALS AND WIRING
3 - 33
3.10.2 Timing chart
(1) When you use the forced stop deceleration function
POINT
To enable the function, set "2 _ _ _ (initial value)" in [Pr. PA04].
(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.
Approx. 95 ms
Approx. 95 ms
MBR
(Electromagnetic
brake interlock)
(Note 1)
ON
OFF
ON
OFF
0 r/min
Base circuit
Servo motor speed
Coasting
Operation delay time of
the electromagnetic brake
Ready-on command
(from controller)
ON
OFF
Release
Activate
Operation command
(from controller)
Electromagnetic
brake
Release delay time and external relay, etc. (Note 2)
(Note 3)
0 r/min
Servo-on command
(from controller)
ON
OFF
Tb [Pr. PC02 Electromagnetic brake sequence output]
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 (Vol.
3)".
3. Give the operation command from the controller after the electromagnetic brake is released.