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2 I/O Modules
2.1 Digital Output Modules
2.1.1 750-478 [2 AI DC 0-10 V, Single-Ended]
2-Channel Analog Input Module (0-10V, Single-Ended)
2.1.1.1
View
Function AI 1
Fig. 2.1.1-1: 2-Channel Analog Input Module 750-478
2.1.1.2
Description
The analog input module receives differential signals of values 0-10 V.
The module has two input channels. The fieldside signals may be received via
the connections AI 1 and 0 V or AI 2 and 0V.
The input channels of a module have a common ground and a shield (screen)
connection (S). The Shield (screen) is directly connected to the DIN rail. A
capacitive connection is made automatically when snapped onto the DIN rail.
The input signal of each channel is electrically isolated and will be transmitted
with a resolution of 16 bits (15 bits + sign bit).
The operational readiness and trouble-free internal data bus communication of
the channels are indicated via a green Function LED. Overrange or underflow
of the measuring range is indicated via a red error LED.
Any configuration of the input modules is possible when designing the
fieldbus node. Grouping of module types is not necessary.
The field side supply voltage of 24 V and 0 V for the input module is derived
from adjacent I/O modules or from a supply module.
WAGO-I/O-SYSTEM 750
I/O Modules
13 14
A
C
B
Error AI 1
D
E1 E2
AI 1
+
+
0V 0V
S
S
Shield
(screen)
750-478
750-478 [2 AI DC 0-10 V, Single-Ended]
Function AI 2
Error AI 2
Data contacts
AI 2
24V
0V
Shield
(screen)
Power jumper contacts
• 7
View
g047800e
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