O Modules; Digital Input Modules; 750-428 [4 Di Ac/Dc 42 V 20 Ms]; View - WAGO I/O System 750 Manual

2 I/O Modules

2.1 Digital Input Modules

2.1.1 750-428 [4 DI AC/DC 42 V 20 ms]

4- Channel Digital Input Module AC/DC 42 V 20 ms,
2- conductor connection
2.1.1.1

View

Fig. 2.1.1-1: 4- Channel Digital Input Module 750-428
2.1.1.2

Description

The digital input module 750-428 reads AC/DC 42 V values from digital field
devices (sensors, switches, etc.) using the differential inputs, and transmits,
depending on these values, binary control signals to the higher ranking
controls via the fieldbus coupler/controller.
The module is a 2-conductor device and has 4 input channels. Four sensors
may be directly connected to the module.
As an example, four 2-conductor sensors can be directly connected using
connection signal input DI1 and DI1 or DI2 and DI2, DI3 and DI3 or DI4 and
DI4.
Each input module has an RC noise rejection filter with a time constant of
20 ms.
All inputs are isolated.
The status of the four input channels is indicated via status LEDs.
WAGO-I/O-SYSTEM 750
I/O Modules
13 14
Status
A
DI 1
C
B
DI 3
D
E1 E2
DI 1
E1 E2
DI 1
E3 E4
DI 3
E3 E4
DI 3
750-428
750-428 [4 DI AC/DC 42 V 20 ms]
Status
DI 2
DI 4
Data contacts
DI 2
DI 2
DI 4
DI 4
I/O Modules • 7
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