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PHOENIX CONTACT 3827_en_B
3.4 RAD-DI4-IFS - digital extension module with four
inputs
The digital RAD-DI4-IFS I/O extension module can process up to four input signals. The
digital inputs process voltages between 0 V ... 50 V AC/DC at the low-voltage input and
voltages between 0 V ... 250 V AC/DC at the high-voltage input. All inputs are electrically
isolated from one another, from the supply voltage, and from the electronics.
3.4.1 Structure
Figure 3-21 RAD-DI4-IFS structure
WARNING: Risk of electric shock
Use the same phase for digital inputs and digital outputs. The isolating voltage between
the individual channels must not exceed 300 V.
Item Designation
1 Digital input as wide-range input
2 Digital input as wide-range input
3 White thumbwheel for setting the I/O-MAP address
4 Connection option for DIN rail connector
5 DIN rail
6 Metal foot catch for DIN rail fixing
7 Digital input as wide-range input
8 Digital input as wide-range input
9 Status LEDs for digital inputs DI1 ... DI4
10 ERR status LED, red (communication error)
11 DAT status LED, green (bus communication)
12 PWR status LED, green (supply voltage)
D
I
4L
D
I
3L
IO-MAP
RAD-DI4-IFS
PW
R
D
A
T
E
R
R
DI1
D
I2
DI3
DI4
8
8
D
I
4
D
I
3
D
I
4H
D
I
3H
D
I
2
L
D
I
1
L
D
I
2
D
I
1
D
I
2
H
D
I
1
H
D
I
2L
D
I
1
L
D
I
2
D
I
1
D
I
2H
D
I
1
H
1
2
3
4
6
7
12
11
10
8
5
9
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