8
FLEX I/O AC Digital Input Modules
Publication 1794-IN102C-EN-P - July 2015
For 1794-TBN
– Connect the associated 120V AC power lead (L1) of the input
device to the corresponding odd numbered terminal on the 34-51 row (C) for
each input as indicated in the Wiring Connections for 1794-IA8 table. (The
120V AC power terminals of row (C) are internally connected together.)
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.
Wiring Connections for 1794-IA8
1794-TB2, 1794-TB3, 1794-TB3S
1794-TBN
Input
Input Terminal
120V AC Supply
Input Terminal
120V AC Supply
Input 0
A-0
A-1
(1)
/C-35
(1)
A-1, 3, 5, 7, 9, 11, 13, and 15 on the 1794-TB2, 1794-TB3, and 1794-TB3S are internally connected in the module to
120V AC L1.
B-0
C-1
(2)
(2)
C-1, 3, 5, 7, 9, 11, 13, and 15 on the 1794-TBN are internally connected in the module to 120V AC L1.
Input 1
A-2
A-3
(1)
/C-36
B-2
C-3
(2)
Input 2
A-4
A-5
(1)
/C-37
B-4
C-5
(2)
Input 3
A-6
A-7
(1)
/C-38
B-6
C-7
(2)
Input 4
A-8
A-9
(1)
/C-39
B-8
C-9
(2)
Input 5
A-10
A-11
(1)
/C-40
B-10
C-11
(2)
Input 6
A-12
A-13
(1)
/C-41
B-12
C-13
(2)
Input 7
A-14
A-15
(1)
/C-42
B-14
C-15
(2)
A = Input terminals (Even numbered terminals 0...14)
B = Common terminals
C = Power terminals (C-34 and C-51 on 1794-TB2; C-34 to
C-51 on 1794-TB3 and 1794-TB3S)
B = Even numbered input terminals 0...14,
AC common terminals 16 and 33
C = Power terminals C-34 and C-51, and
odd numbered input terminals 1...15
