Allen-Bradley 1794-IRT8 - Connecting Wiring for the Tc;Rtd;MV Module; Connecting Wiring Using a 1794-TB3 G and -TB3 GS

Publication 1794-6.5.12 - November 1997
How to Install Your Thermocouple/RTD/mV Input Module 2-9
5. Press firmly and evenly to seat the module in the terminal base unit.
The module is seated when the latching mechanism (7) is locked into
the module.
6. Repeat the above steps to install the next module in its terminal base
unit.
Connecting Wiring for the
TC/RTD/mV Module
Wiring to the TC/RTD/mV module is made through the terminal base unit
on which the module mounts.
Compatible terminal base units are:
Connecting Wiring using a 1794-TB3G and -TB3GS Terminal
Base Units
1. Connect the individual signal wiring to numbered terminals on the
0-15 row (A) and 17-32 row (B) on the terminal base unit. Connect
the input devices as shown in the wiring table on page 2-11.
2. Terminate shields: to terminals 16 or 33 on row B, or 40 through 45
on row C.
3. Connect +24V dc to terminal 34 on the 34-51 row (C), and 24V com-
mon to terminal 35 on the 34-51 row (C).
Module 1794-TB3G 1794-TB3GS
1794-IRT8 Yes Yes
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
A
B
C
A
B
C
1794-TB3G 1794-TB3GS
35 and 51 = common
0 -15
34-51
16-33
34 and 50 = 24V dc
16 and 33 = chassis ground
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
18 19 20 21 22 23 3324 25 26 27 28 29 30 31 3217
35 36 37 38 47 48 49 5034 51
16
39 40 41 42 43 44 45 46
Label placed at top of wiring area.
40 thru 45 = chassis ground
35 and 51 = common
34 and 50 = 24V dc
16 and 33 = chassis ground
40 thru 45 = chassis ground