Rockwell Automation Allen-Bradley 1794-IB16D - Page 20

20 Rockwell Automation Publication 1794-UM061B-EN-P - March 2020
Chapter 1 1794 FLEX I/O Diagnostic Digital Modules Overview
1794-TB2, -TB3, and -TB3S Terminal Base Wiring for the 1794-OB16D
Wiring Connections for the 1794-OB16D (use with 1794-TB2, 1794-TB3, or 1794-TB3S
Terminal Base Units).
Outputs Output Terminal Common Terminal
Output 00 A-0 B-17
Output 01 A-1 B-18
Output 02 A-2 B-19
Output 03 A-3 B-20
Output 04 A-4 B-21
Output 05 A-5 B-22
Output 06 A-6 B-23
Output 07 A-7 B-24
Output 08 A-8 B-25
Output 09 A-9 B-26
Output 10 A-10 B-27
Output 11 A-11 B-28
Output 12 A-12 B-29
Output 13 A-13 B-30
Output 14 A-14 B-31
Output 15 A-15 B-32
+V DC C-34 and C-51 (1794-TB2) (Power Terminals are
internally connected in the terminal base unit.
C-34…C-51 (1794-TB3, 1794-TB3S) (Power terminals
are internally connected in the terminal base unit.
Common B-16…B-33 (Common terminals are internally
connected in the terminal base unit.
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
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
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Outputs
Commons
(1794-TB3 shown)
-V (Supply Common) = Terminals B-16 through B-33.
+V (Supply +Voltage In) = Terminals C-34 through C-51.
-V
Voltage
In +V
Voltage
Out +V
Voltage
A
B
C
(Use B-33 and C-51 for daisy-chaining to next terminal base unit.)
Common
-V
Common
Terminals 35 through 50 not available on 1794-TB2
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