Stepper Motor Driver AD1431
YA7179-1/2
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*3 EORG photocoupler ON/OFF condition in the following excitation methods
The EORG photocoupler turns ON in the initial excitation condition (Both A and B phases excitation
are the same with those of the initial location.).
The timing in each excitation method is as follows.
In the 2 phase excitation, the initial excitation is that A phase wire : 100% and B phase wire : -100%.
The EORG outout photocouplar turns ON once every 4 input pulses.
2相励磁
EORG(-)
制御電源ON
入力パルス
+5V
OFF
ON
OFF
ON
A相
0
100
-100
(%)
B相
0
100
-100
+5V
CLK(+)
CLK(-)
EORG(+)
EORG(-)
AD1431側
In the 1-2 phase excitation, the initial excitation is that A phase wire : 100% and B phase wire : 0%.
The EORG outout photocouplar turns ON once every 8 input pulses.
1-2相励磁
EORG(-)
制御電源ON
入力パルス
OFF
OFF
ON
A相
0
100
-100
(%)
B相
0
100
-100
ON
AD1431
2 phase excitation
Control power ON
Input pulse
A phase
B phase
B phase
A phase
Input pulse
Control power ON
2
1-2 phase excitation
