FLEX I/O AC Digital Output Modules      11
Publication 1794-IN103D-EN-P - July 2018
1794-TBN and 1794-TBNF Terminal Base Wiring for 1794-OA8
Connect Wiring for the 1794-OA8I
1. For 1794-TB2, 1794-TB3, or 1794-TB3S – Connect individual output wiring 
to the even numbered terminals on the 0…15 row (A). 
For 1794-TBN or 1794-TBNF – Connect individual output wiring to the even 
numbered terminals on the 16…33 row (B).
2. For 1794-TB2, 1794-TB3, or 1794-TB3S – Connect the associated V AC 
power lead (L1) to the corresponding odd numbered terminal on the 0…15 row 
(A) for each output as indicated in the Wiring Connections for 1794-OA8I 
table. 
For 1794-TBN or 1794-TBNF – Connect the associated VAC power (L1) lead 
to the odd numbered terminals on row (C).
Individual isolated 120V AC common (L2) leads must be run externally to 
each output device.
WARNING: When used in a Class I, Division 2, hazardous location, this 
equipment must be mounted in a suitable enclosure with proper wiring 
method that complies with the governing electrical codes.
16
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
51
33
34
B
C
Even Numbered I/O Terminals 0…14
Odd Numbered I/O Terminals 1…15
Connect 120V AC (L2) to terminal B-16
Connect 120V AC power (L1) to terminal C-34
Use B-33 and C-51 for daisychaining to the next terminal base
L1
L2
L1
L2