3
120V ac FLEX I/O 8 Input Module (Cat. No. 1794IA8)
Publication
17945.9
Wiring
to a 1794TB2 or TB3 T
erminal Base Unit
1. Connect individual input wiring to numbered terminals on the 0–15
row (A) as indicated in the table below.
1. Connect the associated input wiring to the corresponding odd numbered
terminal on row (A) (1794-TB2) or the associated terminal on row (C)
(1794-TB3) for each input as indicated in the table below. (Odd numbered
terminals on row A and terminals C-34 thru C-51 are internally connected
together.)
2. Connect 120V ac L1 to terminal 34 on the 34–51 row (C).
3. Connect 120V ac common L2 to terminal 16 on the 16–33 row (B).
4. If continuing power to the next terminal base unit, connect a jumper
from terminal 51 (120V ac L1) on this base unit to terminal 34 on the
next base unit.
5. If continuing common to the next terminal base unit, connect a jumper
from terminal 33 (120V ac common L2) on this base unit to terminal
16 on the next base unit.
1 51
34
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
0 -15
34-51
16-33
1 2 3 4 5 6 7 8 9 10 11 12 13 14 150
1794TB2
A
B
C
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
12 34567891011121314150
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
34
1794TB3
0 -15
34-51
16-33
A
B
C
!
ATTENTION: Total current draw through the terminal base
unit is limited to 10A. Separate power connections to the terminal
base unit may be necessary.
Wiring to a 1794TBN or TBNF T
erminal Base Unit
1. Connect individual input wiring to the even numbered terminals on row (B) as
indicated in the table below.
2. Connect the associated input wiring to the corresponding odd numbered
terminal on row (C) for each input as indicated in the table below.
6. Connect 120V ac (L1) to terminal 34 on row (C).
7. Connect 120V ac common (L2) to terminal 16 on row (B).
