ZX-MOTOR3A : 2-Channel 3A DC motor driver board documentation l 1
ZX-MOTOR3A 2-Channels 3A DC motor driver board l Drive DC motor 2 channels with bi-color LED indicator. l L298 driver Max. load current 3000mA (3A). l Fully 3-Control signal wires l Suitable supply voltage +9 to 24Vdc. l Opto-isolation for separating ground of control voltage (+5V) and Motor voltage (+Vm).
IC3 L298D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
K2 MOTOR-1 K4 MOTOR-2 C1 0.1µF R5 1k
R14 1k
R7 1k
D1 1N5819
D2 1N5819
R15 1k
R13 1k
R6 1k C1 0.1µF
R12 1k
D3 1N5819
LED3 ON
D4 1N5819
IC6 HT7150A C3 100µF 6.3V
IC1 PC817
IC2 PC817
ZD1 4V7
R4 1k
R3 1k
IC4 PC817
LED1 CH-1
ZD3 4V7
R11 1k
ZD4 4V7
R10 1k R9 1k
R1 1k
R8 1k
K3 CH-2 A B G
Figure 1: ZX-MOTOR3A board schematic
A B G
IN C4 470µF 35V
K5 Vm +9 - 24Vdc
LED2 CH-2
1k
K1 CH-1
GND
IC5 PC817
ZD2 4V7
R2 1k
OUT
S1 POWER
2 l ZX-MOTOR3A : 2-Channel 3A DC motor driver board documentation
The heart of DC motor driver circuit is L298 driver IC. It requires 2 or 3 control signal from any microcontroller.
0
0
-
Free
0
1
-
Forward
1
0
-
Backward
1
1
-
Free
M
Vm CH-1
CH-2
A B G
A B G
OUT1A
Motor power source 9 to 24V 3A (min)
ON
OUTPUT
CH-2
G
CH-1
B
ZX-MOTOR3A
A
MOTOR-1
M
MOTOR-2
The figure 2 to 4 show the connection diagram of any microcontroller in 2 and 3 wires control.
OUT1B OUT2A
OUT2B
Microcontroller
0
0
0
Free
0
1
0
Forward
1
0
0
Backward
1
1
0
Brake
"0" because connect to Ground always
M
Vm CH-1
CH-2
A B G
A B G
ON
OUTPUT
CH-2
G
CH-1
B
ZX-MOTOR3A
A
MOTOR-1
M
MOTOR-2
Figure 2 : 2-wire control connection diagram of ZX-MOTOR3A board
Motor power source 9 to 24V 3A (min)
OUT1A OUT1B OUT2A OUT2B
Microcontroller
Figure 3 : 2-wire control with ground connection diagram of ZX-MOTOR3A board
0
0
Free
0
1
0
Forward
1
0
0
Backward
1
1
0
Brake
x
x
1
Free
CH-1
CH-2
A B G
A B G
ON
0
CH-2
OUTPUT
CH-1
G
ZX-MOTOR3A
B
M
Vm
MOTOR-1
M A
MOTOR-2
ZX-MOTOR3A : 2-Channel 3A DC motor driver board documentation l 3
Motor power source 9 to 24V 3A (min)
OUT1A OUT1B PWM1 OUT2A OUT2B PWM2
Microcontroller
Figure 4 : 3-wire control connection diagram of ZX-MOTOR3A board The figure 5 and 6 show the connection diagram of i-BOX3.0 Logo microcontroller
0
0
-
Free
0
1
-
Forward
1
0
-
Backward
1
1
-
Free
M
Vm CH-1
CH-2
A B G
A B G
ON
OUTPUT
CH-2
G
CH-1
B
ZX-MOTOR3A
A
MOTOR-1
M
MOTOR-2
L298 outputs connect to DC motor and provides LED status for motor supply voltage. If supply in DIRECT, LED will lights in Green. The opposite, if red LED lights, it means supply voltage is INVERT. Users can use the different color for defining direction.
Motor power source 9 to 24V 3A (min)
AB AB Low power motor output (L293D) i-BOX3.0 Microcontroller
Figure 5 : 2-wire connection diagram of ZX-MOTOR3A with i-BOX3.0
4 l ZX-MOTOR3A : 2-Channel 3A DC motor driver board documentation
0
0
0
Free
0
1
0
Forward
1
0
0
Backward
1
1
0
Brake
"0" because connect to Ground (battery's negative polarity) always
M
Vm CH-1
CH-2
A B G
A B G
ON
OUTPUT
CH-2
G
CH-1
B
ZX-MOTOR3A
A
MOTOR-2
MOTOR-1
M
Motor power source 9 to 24V 3A (min)
AB AB Low power motor output (L293D) i-BOX3.0 Microcontroller
Figure 6 : 2-wire connection diagram of ZX-MOTOR3A with i-BOX3.0 for braking the motorÂ’s shaft ZX-MOTOR3A requires DC voltage supply during +9 to +24V. The supply current will depend on the motor. The 3A power source is recommended for motor rating not over 1A and 5A or higher for motor 3A. ZX-MOTOR3A can drive motor 3A maximum.
www.inex.co.th www.inexglobal.com