ADB-2640U
Instructions Manual
(3) Motor excitation stop input（M.F）
Deterioration of the holding power with
the motor may cause breakage of the machine
or injury.
Check safety before inputting.
① Operating current range：2.6mA～19.5mA
The photo-coupler turns on with
inter-terminal voltage of 4.5 V～26.4 V.
(Photo-coupler diode V
F
≒ 1.1 V)
● Motor output current is shut off with the photo-coupler ON.
At this time, motor torque changes to detent torque.
● When this signal is input, motor torque may be lost, resulting in failure to
retain the load transported.
In particular, this risk is high with the vertical drive (such as the Z-axis).
② Timing chart
M.F
t1
t2
t1≦300ms
(t1：Time required for the motor to be enabled.)
t2≦5ms
(t2：Time required for the motor output current to be shut off.)
t3≦100ms
(t3：Time required for the motor to be enabled.)
ON
t3
ON
Supply
power
ON
OFF
Motor
excitation
ON
OFF
5
6
M.F+
M.F-
(J1)
Photo-coupler
1.3kΩ
ADB-2640U
CAUTION
-31-
