Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 147)

1 Publication 1797-6.5.6 - June 2005
Chapter
31
1797-IRT8 FLEX Ex Thermocouple/RTD
Input Module
General Information Modules must be used with a 1797-TB3 or -TB3S intrinsically safe terminal
base unit.
Module Installation Rotate keyswitch on terminal base unit clockwise to position 2 as required for
this type of module. Do not change the position of the keyswitch after
wiring the terminal base unit.
Inputs Each input can be operated from a thermocouple (TC) or resistance
temperature detector (RTD). Do not apply any non-intrinsically safe
signals to this module.
The channels in this module are electrically connected to each other and have a
common plus-line.
IMPORTANT
When interconnecting several lines, you must consider the
total accumulated power and check for intrinsic safety.