Rockwell Automation 1794-IT8,D17946.5.7 Thermocouple/Millivolt Input Module User Manual
Page 17
2–3
How to Install Your Thermocouple/mV Input Module
Publication 1794-6.5.7
Methods of wiring the terminal base units are shown in the
illustration below.
Wiring the Terminal Base Units (1794-TB2 and -TB3 shown)
Wiring when total current draw is less than 10A
Wiring when total current draw is greater than 10A
Daisy-chaining
Individual
Total current draw through any base unit must not be greater than 10A
Combination
24V dc
24V dc
24V dc
24V dc
24V dc or
120V ac
24V dc
ATTENTION: Do not daisy chain power or
ground from the thermocouple terminal base unit to
any ac or dc discrete module terminal base unit.
!
Note: Use this configuration if using any
“noisy” dc discrete I/O modules in your system.
Thermocouple module wiring separate from discrete wiring.
Thermocouple
or Analog Module
Note: All modules powered by the same power supply
must be analog modules for this configuration.
Note: All modules must be analog modules for this configuration.
Thermocouple
or Analog Module
Thermocouple
or Analog Module
Thermocouple
or Analog Module
Thermocouple
or Analog Module
Discrete
Module
Discrete
Module
Thermocouple
or Analog Module
Thermocouple
or Analog Module
Thermocouple
or Analog Module
Discrete
Module
Discrete
Module