Stepper Motor Driver AD1431
YA7179-1/2
- 8 -
*5 Components for use
Electronic components for use may be changed to equivalents without prior notice. In that case,
constants of surrounding devices, such as resistors, may be changed in accordance with the
specification.
4. Connection
Connector No.
Pin No.
Signal name
Remarks
CN1
(Power supply)
1
PWR+
Control power DC12V to DC24V
2
PWR-
Control power GND
CN2
(I/O)
1
CW+(CLK+)
CW signals in the two pulse method (CW/CCW)
When the photocoupler turns ON to OFF, the step motion is
made in the CW direction.
CLK signals in the one pulse method (CLK/DIR)
When the photocoupler turns ON to OFF, the step motion is
made.
2
CW-(CLK-)
3
CCW+(DIR+)
CCW signals in the two pulse method (CW/CCW)
When the photocoupler turns ON to OFF, the step motion is
made in the CCW direction.
DIR signals in the one pulse method (CLK/DIR)
Photocoupler ON : CCW direction
Photocoupler OFF : CW direction
4
CCW-(DIR-)
5
MTR/OFF+
Motor excitation ON/OFF signals
Photocoupler ON : Excitation OFF
Photocoupler OFF : Excitation ON
6
MTR/OFF-
7
ACD/OFF+
Auto current down ON/OFF signals
Photocoupler ON : ACD_OFF
Photocoupler OFF : ACD_ON
8
ACD/OFF-
9
EORG+
Signal to display initial excitation condition
Photocoupler ON : initial excitation
Photocoupler OFF : Other than initial excitation
10
EORG-
CN3
(Motor)
1
A
Motor A phase connection
2
_
A
Motor
_
A phase connection
3
B
Motor B phase connection
4
_
B
Motor
_
B phase connection
