Maotor Excitation Stop Input (M.f) - Melec GDB-5K40 Instruction Manual

(3) Motor excitation stop input（M.F）
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
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
Motor
excitation
t1≦5ms (t1：Time required for the motor output current to be shut off.)
t2≦100ms (t2：Time required for the motor to be enabled.)
CAUTION
Deterioration of the holding power with
the motor may cause breakage of the machine
or injury.
Check safety before inputting.
≒ 1.1 V)
F
ON OFF
OFF ON
t1 t2
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Instructions Manual
DRIVER
(J1)
M.F+ 5 1.3kΩ
M.F- 6
Photo-coupler
GDB-5K40