10
FLEX I/O AC Digital Input Modules
Publication 1794-IN102C-EN-P - July 2015
2.
For 1794-TB3 or 1794-TB3S
– Connect the associated 120V AC power lead
(L1) of the input device to the corresponding terminals on the 34-51 row (C) for
each input as indicated in the Terminal Base Wiring for 1794-IA16 table. (The
120V power terminals of row (C) are internally connected together.)
For 1794-TBN
– An external terminal strip is needed to distribute 120V AC
power (L1) to each device.
3. Connect 120V AC power (L1)to terminal 34 on the 34-51 row (C).
4. Connect 120V AC common (L2) to terminal 16 on the 16-33 row (B).
5. If daisychaining power to the next terminal base, connect a jumper from terminal
51 (+120V AC L1) on this base unit to terminal 34 on the next base unit.
6. If continuing AC common to the next base unit, connect a jumper from terminal
33 (120V common L2) on this base unit to terminal 16 on the next base unit.
Terminal Base Wiring for 1794-IA16
Input
Input Terminal
1794-TB3, 1794-TB3S
Input Terminal
1794-TBN
120V AC Supply (L1)
(1)
Input 0
A-0
B-0
C-35
Input 1
A-1
C-1
C-36
Input 2
A-2
B-2
C-37
Input 3
A-3
C-3
C-38
Input 4
A-4
B-4
C-39
Input 5
A-5
C-5
C-40
Input 6
A-6
B-6
C-41
Input 7
A-7
C-7
C-42
Input 8
A-8
B-8
C-43
Input 9
A-9
C-9
C-44
Input 10
A-10
B-10
C-45
Input 11
A-11
C-11
C-46
Input 12
A-12
B-12
C-47
Input 13
A-13
C-13
C-48
Input 14
A-14
B-14
C-49
