10
Rockwell Automation Publication 1794-IN102D-EN-P - July 2018
FLEX I/O AC Digital Input Modules
1794-TB2, 1794-TB3, and 1794-TB3S Terminal Base Wiring for
1794-IA8 and 1794-IA16
1794-TBN Terminal Base Wiring for 1794-IA8 and 1794-IA16
Connecting Wiring for the 1794-IA16
1.
For 1794-TB3 or 1794-TB3S
– Connect individual input wiring to
numbered terminals on the 0...15 row (A) as indicated in the
Terminal
Base Wiring for 1794-IA16
table.
For 1794-TBN
– Connect individual input wiring to even-numbered
terminals on the 16...33 row (B), and to the odd-numbered terminals on
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
Inputs
Commons
(1794-TB3 shown)
L2
L1
Voltage
A
B
C
L2
Connect 120V AC L1 power to terminal C-34
Connect 120V AC common L2 to terminal B-16
Use B-33 and C-51 for daisychaining to the next terminal base unit
L1
(Terminals C-35 thru C-50 not available on the 1794-TB2.)
16
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
51
33
34
L1
L2
L1
L2
B
C
Even Numbered I/O Terminals 0 thru 14
Odd Numbered I/O Terminals 1 thru 15
(1794-TBN shown)
L1 = 120V AC - Connect to terminal C-34
L2 = 120V AC common - Connect to terminal B-16
Use B-33 and C-51 for daisychaining to the next terminal base unit