Rockwell Automation 1794-IB8_IB16_IB16K_IB32 Flex I/O Digital Input Modules Installation Instructions User Manual
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Publication 1794-IN093C-EN-P - December 2009
Wiring Connections for 1794-IB8, -IB16, and -IB16K
(use with 1794-TB3 or -TB3S Terminal Base Units)
1794-TB3 and -TB3S Terminal Base Wiring for 1794-IB8, -IB16, and
-IB16K
2- and 3-Wire Input Wiring for 1794-IB8, -IB16, and -IB16K
Connect Wiring for the 1794-IB32 using a 1794-TB32 or -TB32S
1.
Connect individual input wiring (IN0…IN15) to numbered terminals on
the 0…15 row (A) as indicated in the following table.
2.
Connect the associated power to the +V1 terminal (35, 37, 39, or 41) on
the 34…51 row (C) as indicated in the following table.
3.
Connect the associated common for IN0…IN15 to COM1 (terminal 36,
38, 40, or 42) on the 34…51 row (C) as indicated in the following table.
4.
Connect individual input wiring (IN16…IN31) to numbered terminals on
the 16…33 row (B) as indicated in the following table.
Do not connect to terminals 16 or 33.
5.
Connect the associated power to the +V2 terminal (43, 45, 47, or 49) on
the 34…51 row (C) as indicated in the following table.
6.
Connect the associated common for IN16…IN31 to COM2 (terminal 44,
46, 48, or 50) on the 34…51 row (C).
7.
If continuing input wiring power for IN0…IN15 to the next terminal base,
connect a jumper from terminal 41 (+V1) on this terminal base unit to the
power terminal on the next terminal base unit. (Refer to the installation
instructions for the specific terminal base unit.
8.
If continuing input wiring IN0…IN15 common to the next terminal base,
connect a jumper from terminal 42 (COM1) on this terminal base unit to
the common terminal on the next terminal base unit.
9.
If continuing input wiring power for IN16…IN31 to the next terminal
base, connect a jumper from terminal 49 (+V2) on this terminal base unit
to the power terminal on the next terminal base unit. (Refer to the
installation instructions for the specific terminal base unit.
10.
If continuing input wiring IN16…IN31 common to the next terminal
base, connect a jumper from terminal 50 (COM2) on this terminal base
unit to the common terminal on the next terminal base unit.
Wiring for 1794-IB32 (use with 1794-TB32 or -TB32S Terminal Base Unit)
Input
(1)
(1)
1794-IB8: Inputs 0…7; 1794-IB16, -IB16K: Inputs 0…15.
Input Terminal
Voltage Terminal
Common Terminal
(2)
(2)
3-wire devices use input, supply and common; 2-wire devices use input and supply.
Input 0
A-0
C-35
B-17
Input 1
A-1
C-36
B-18
Input 2
A-2
C-37
B-19
Input 3
A-3
C-38
B-20
Input 4
A-4
C-39
B-21
Input 5
A-5
C-40
B-22
Input 6
A-6
C-41
B-23
Input 7
A-7
C-42
B-24
Input 8
A-8
C-43
B-25
Input 9
A-9
C-44
B-26
Input 10
A-10
C-45
B-27
Input 11
A-11
C-46
B-28
Input 12
A-12
C-47
B-29
Input 13
A-13
C-48
B-30
Input 14
A-14
C-49
B-31
Input 15
A-15
C-50
B-32
+V DC
C-34…C-51
Common
B-16…B-33
-V
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)
Connect V common to terminal B-16.
Connect +V to terminal C-34.
Voltage
In +V
Voltage
Out +V
Voltage
A
B
C
Common
-V
Common
Use B-33 and C-51 to daisy-chain to the next terminal base unit.
= Sink input
= Common
= +V DC
0…15
16…33
34…51
A
B
C
A
B
C
2-Wire Device
(Sourcing Output)
3-Wire Device
(Sourcing Output)
Input
Signal
Input
Signal
IN 0
A-0
IN 16
B-17
IN 1
A-1
IN 17
B-18
IN 2
A-2
IN 18
B-19
IN 3
A-3
IN 19
B-20
IN 4
A-4
IN 20
B-21
IN 5
A-5
IN 21
B-22
IN 6
A-6
IN 22
B-23
IN 7
A-7
IN 23
B-24
IN 8
A-8
IN 24
B-25
IN 9
A-9
IN 25
B-26
IN 10
A-10
IN 26
B-27
IN 11
A-11
IN 27
B-28
IN 12
A-12
IN 28
B-29
IN 13
A-13
IN 29
B-30
IN 14
A-14
IN 30
B-31
IN 15
A-15
IN 31
B-32
+V1 DC power
(1)
(inputs IN0…IN15)
(1)
2-wire input devices use signal and supply terminals; 3-wire devices use signal, return and supply terminals.
Power terminals 35, 37, 39, and 41 for IN0-IN15.
+V1 connected to terminals 35, 37, 39, and 41
COM1 DC Return
(inputs IN0…IN15)
Common terminals 36, 38, 40, and 42 for IN0-IN15.
V1 Return connected to terminals 36, 38, 40, and 42
+V2 DC power
(inputs IN16…IN31)
Power terminals 43, 45, 47, and 49 for IN16-IN31.
+V2 connected to terminals 43, 45, 47, and 49
COM2 DC Return
(inputs IN16…IN31)
Common terminals 44, 46, 48, and 50 for IN16-IN31.
V2 Return connected to terminals 44, 46, 48, and 50