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3. SIGNALS AND WIRING
(2) Setting
Using parameter No.33 (electromagnetic brake sequence output), set a time delay (Tb) at servo-off from
electromagnetic brake operation to base circuit shut-off as in the timing chart shown in (2) in this section.
(3) Operation timing
(a) Servo-on (SON) command 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.
(80ms)
ON
OFF
ON
OFF
Tb
0 r/min
(80ms)
Servo motor speed
Electromagnetic
brake (CNP2-9)
Base circuit
Invalid(ON)
Valid(OFF)
Servo-on(SON)
Electromagnetic brake
operation delay time
Coasting
(b) Forced stop (EMG) ON/OFF
(10ms)
ON
OFF
Forced stop
(EMG)
Dynamic brake
Dynamic brake
Electromagnetic brake
Electromagnetic brake
Servo motor speed
Electromagnetic
brake (CNP2-9)
Base circuit
Invalid(ON)
Valid(OFF)
Invalid(ON)
Valid(OFF)
Electromagnetic brake
operation delay time