NPM AD1431, Руководство пользователя

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Stepper Motor Driver AD1431
YA7179-1/2
- 7 -
In the W1-2 phase excitation, the initial excitation is that A phase wire : 100% and B phase wire : 0%.
The EORG outout photocouplar turns ON once every 16 input pulses.
W1-2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
In the 4W1-2 phase excitation, the initial excitation is that A phase wire : 100% and B phase wire : 0%.
The EORG outout photocouplar turns ON once every 64 input pulses.
4W1-2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
*4 Driver heat generation
If the motor is stopping and excited by strong current for a long time without using ACD function,
AD1431 generates heat. When it is used in enclosed narrow space, the temperature raise may
damage functions of this driver. In this case, we recommend that you use ACD function to cut down
power consumption or you use an external heatsink additionally.
Do not touch the driver directly during heat generating and just after power off because it may be hot
(Reference data)
In the case of driving current 1.2A and motor stopping
An alminium board (W290mm, D110mm, H1.5mm) is used as an external heatsink.
ACD function is set for 50% reduction during motor stopping.
The minimum time until thermal saturation occurs is 30 minutes.
ACD function External heatsink Maximum temperature
x x 40 degree
x o 23.5 degree
o x 14 degree
W1-2 phase excitation
2
Control power ON
Input pulse
A phase
B phase
2 phase
excitation
4W1-2 phase excitation
Control power ON
Input pulse
A phase
B phase
ControN