Timing Chart - Mitsubishi Electric MELSERVO-JET MR-JET User Manual

Timing chart

When using the forced stop deceleration function
When [Pr. PA04.3 Forced stop deceleration function selection] is set to "2" (Forced stop deceleration function
enabled).
■Turning the servo-on command on/off
When the servo-on command is turned off, the servo lock is released after Tb [ms], following which the servo motor coasts.
If the electromagnetic brake is enabled during servo-lock, its service life may be shortened. Therefore, when using this
function with the vertical axis, set Tb to about 1.5 times of the minimum delay time where the moving part will not drop down.
Servo motor speed
Base circuit
MBR
*1
(Electromagnetic
brake interlock)
Servo-on command
(from controller)
Ready-on command
(from controller)
Operation command
(from controller)
Electromagnetic
brake
*1 ON: Electromagnetic brake is not activated
OFF: Electromagnetic brake is activated
*2 The electromagnetic brake is released after the release delay time of the electromagnetic brake and the operation time of external circuit
relay or other operations. For the release delay time of electromagnetic brake, refer to "Characteristics of electromagnetic brake" in the
following manual.
Rotary Servo Motor User's Manual (For MR-JET)
*3 Give an operation command from the controller after the electromagnetic brake is released.
3 BASIC FUNCTION
118
3.11 Electromagnetic brake interlock function
0 r/min
(95 ms)
ON
OFF
(95 ms)
ON
OFF
ON
OFF
ON
OFF
0 r/min
Released
Activated
*3
Release delay time and external relay or others
Tb
[Pr. PC02 Electromagnetic
brake sequence output]
Operation delay time of
electromagnetic brake
*2