12
FLEX I/O AC Digital Input Modules
Publication 1794-IN102C-EN-P - July 2015
1794-TB2, 1794-TB3, and 1794-TB3S Terminal Base Wiring for 1794-IA8I
Wiring Connections for 1794-IA8I
1794-TB2, 1794-TB3, 1794-TB3S
1794-TBN
Input
Input Terminal
120V AC L2
Common
Input Terminal
120V AC L2
Common
Input 0
A-0
A-1
B-0
C-1
Input 1
A-2
A-3
B-2
C-3
Input 2
A-4
A-5
B-4
C-5
Input 3
A-6
A-7
B-6
C-7
Input 4
A-8
A-9
B-8
C-9
Input 5
A-10
A-11
B-10
C-11
Input 6
A-12
A-13
B-12
C-13
Input 7
A-14
A-15
B-14
C-15
A = Even numbered terminals 0...14 for customer
connections; corresponding odd numbered 120V AC
common L2 terminals 1...15 for customer connections from
isolated power supply.
B = Even numbered terminals 0...14 for
customer connections;
C = Odd numbered 120V AC common L2
terminals 1...15 for customer connections
from isolated power supply.
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
34
(1794-TB3 shown)
A
B
C
Connect Inputs to even numbered terminals on row (A)
Connect 120V AC common L2 to odd numbered terminals on row (A)
