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Digital I/O Configuration
1-2
DRIVER
F
<18
Ω
JUMPER
5.3V
OUTPUT
V
INT
SOLENOID
OR RELAY
COIL
7020
A. Using Internal Voltage Source (5.3V)
DRIVER
F
<18
Ω
JUMPER
V
OUTPUT
V
INT
SOLENOID
OR RELAY
COIL
7020
B. Using External Voltage Source (25V maximum)
Figure 1-1
Output configu ations for pull-up devices
DRIVER
F
<18
Ω
JUMPER
5.3V
OUTPUT
V
INT
LOGIC
DEVICE
7020
Note: Pull-up resistor (R
P
) installed
R
P
10k
Ω
GND
OR
GATE
A
B
Y
Figure 1-2
Output configu ation using pull-up resistance
INPUT
7020
R
2
100k
Ω
GND
R
1
10k
Ω
R
1
= Pull-up resistor
R
2
= Input protection resistor
Figure 1-3
Input configu ation