
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
Tb [ms] after the servo-on is switched off, the servo lock is released and the servo motor coasts. If
the electromagnetic brake is enabled during servo-lock, the brake life may be longer. Therefore,
when using the electromagnetic brake in a vertical lift application or the like, set delay time (Tb) to
about the same as the electromagnetic brake operation delay time to prevent a drop.
(95 ms)
(95 ms)
MBR
(Electromagnetic
brake interlock)
(Note 1)
ON
OFF
ON
OFF
0 r/min
Base circuit
Servo motor speed
Coasting
Tb
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
Note 1.
2.
3.
ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated.
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).
Give the operation command from the controller after the electromagnetic brake is released.
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