Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 69)

1 Publication 1797-6.5.6 - June 2005
Chapter
12
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.
When using an intrinsically safe electrical apparatus according to EN50020,
the European directives and regulations must be followed.
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.