Specifications

Analog Input Modules
31007715 6/2008 117
The analog returns (pin 4) for each channel are internally connected—therefore
there is no channel-to-channel isolation.
Sample
Wiring Diagrams
The following field wiring example shows how two isolated analog sensors can be
wired to the STB ACI 1230 module. An external power supply is required to power
the sensors:
2 inputs from sensor 1 (top) and sensor 2 (bottom)
4 returns from input 1 (top) and input 2 (bottom)
3 no connection no connection
4 analog input return analog input return
5 no connection no connection
6 field power return (to the module) field power return (to the module)
Pin Top Connections Bottom Connections
2
4
2
4
I
+
-
I
+
-
-
+
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