Technical data

Publication 1794-2.1 - January 2000
108 24V dc Source Isolated Analog 4 Input Module Cat. No. 1794-IF4I FLEX I/O and FLEX Integra Product Data
24V dc Source Isolated Analog 4 Input Module Cat. No. 1794-IF4I
Recommended
Terminal Base
Compatible
Terminal Base(s)
1794-IF4I
ISOLATED ANALOG INPUT
RETI V RET I
RET
V RET
3
RETI V RET I
RET
V RET
INPUT 0 INPUT 1
OK
INPUT 2 INPUT 3
40136
TB3 TB3S TB2 TB3T TB3TS TBN
ATTENTION
!
Only connect either a voltage input or a current
input per channel, not both.
Simplified Schematic of Input 0 Showing Connections for a Voltage Input TB3, TB3S, TB2, TB3T, TB3TS shown
Channel 0
Input
Device
power
source
Shielded
Twisted Pair
Cable
V
in
V
in
return
I
in
I
in
return
+15V
A-2
A-3
A-0
A-1
+Vth
-Vth
+15V
-15V
+15V
-15V
+
-
+
-
-
+
-
+
A/D
A/D
Optical
Isolation
Optical
Isolation
Micro
Controller
Flexbus
Interface
other
channels
40137