Technical data

Publication 1794-2.1 - January 2000
FLEX I/O and FLEX Integra Product Data
24V dc 4 Sink Input Module Cat. No. 1793-IB4 and -IB4S 51
24V dc 4 Sink Input Module Cat. No. 1793-IB4 and -IB4S
Wiring
Example of 2-Wire and 3-Wire Sensors
24 VDC SINK INPUT
1793-IB4
3210
41486
Typical Simplified Schematic for Input 0
Input
Device
+
-
24V
COM
2
1
8
0
Opto
Isolation
Flexbus
Interface
41501
Channel
Input Terminal
1
Supply Terminal
Input 0 A-2 A-1
Input 1 A-3 A-6
Input 2 A-4 B-9
Input 3 A-5 B-14
+24V dc Terminals 1, 6, 8, 9, 14, 15 are internally
connected together in the module
Common Terminals 0, 7, 10 thru 13 are internally connected
together in the module
1 2-wire sensors use input and supply terminals; 3-wire sensors use input, supply and
common terminals.
01234567
8 9 10 11
A
B
13 14 1512
CVII I I CV
CCVVCCVV
Ch 0
Ch 1
Ch 2
Ch 3
0 1234567
8 9 10 11 12 13 14 15
A
B
CVI I I I CV
CCVVCCVV
Ch 0
Ch 1
Ch 2
Ch 3
1793-IB4
1793-IB4S
Where: C = common, V = +24V dc power, I =input
41378
41379
ATTENTION
!
Total current draw through the terminal base
unit is limited to 10A. Separate power
connections may be necessary.
0
7
8
15
123456
9 10 11121314
3-wire sensor
2-wire sensor
41338