Table of Contents
Advertisement
Confidential
1. CIRCUIT DESIGN REFERENCE
1.1 Example Motor Drive Circuit
1) Example circuit for the motor drive signal
I/O port
I/O port
I/O port
I/O port
Parts used in Figure 1.1.1, Example Motor Drive Circuit
Part No.
IC1
1.2 Motor Drive Sequence
1) Phase excitation for rotating the motor clockwise (CW).
A 4-phase bipolar stepping motor is used. Two-phase signals are sequentially energized in order,
as shown in Table 1.2.1 so that the motor rotates clockwise (CW).
Step
A
1
ON
2
OFF
3
OFF
4
ON
Note: When ENA1 and ENA2 are LOW, all output signals from the Driver IC go off.
EPSON
VCC
IC1
1
VCC
2
ENA1
13
ENA2
6
IN1
9
IN2
7
GND
VCONT
14
GND
User side
Figure 1.1.1 Example Motor Drive Circuit
Table 1.1.1 Parts Used in Example Motor Drive Circuit
Type
Driver IC
Table 1.2.1 Motor Rotating Direction and Phase Signal
Motor Signal Name
B
/A
ON
OFF
ON
ON
OFF
ON
OFF
OFF
TITLE
M-T123
Designer's Guide
(STANDARD)
Power supply for
Motor Vp
4
VS1
11
VS2
3
OUT1
5
OUT2
12
OUT3
10
OUT4
8
N.C.
Specifications
LB1838M
Motor Drive Signal (input to Driver IC)
/B
IN1
OFF
L
OFF
H
ON
H
ON
L
SHEET
REVISION
1
Motor A
4
Motor A
3
Motor B
2
Motor B
Printer side
Manufacturer
SANYO
IN2
ENA1
ENA2
L
H
H
L
H
H
H
H
H
H
H
H
NO.
NEXT
SHEET
A
2
1
Advertisement
Table of Contents
