Rockwell Automation 1797-IRT8 FLEX Ex Thermocouple/RTD/mV Input Module User Manual - Manual (Page 33)

Publication 1797-6.5.2 - February 2001
How to Install Your FLEX Ex Thermocouple/RTD/mV Module 3-9
6. Make certain that you only connect terminal base units to other
intrinsically safe system modules or adapters to maintain the
integrity of the intrinsically-safe backplane.
7. Remove cap plug (8) and attach another intrinsically safe
terminal base unit to the right of this terminal base unit if
required. Make sure the last terminal base has the cap plug (8)
in place.
The adapter is capable of addressing eight modules. Do not exceed
a maximum of eight terminal base units in your system.
Wiring the Terminal Base
Units Wiring the FLEX Ex I/O modules is done through the 1797-TB3 and
1797-TB3S terminal base units.
41307
ATTENTION
!
The FLEX Ex I/O modules do not receive primary
operational power from the backplane. +/-V dc
power must be applied to your module before
operation. If power is not applied, the module
position will appear to the adapter as an empty
slot in your chassis. If the adapter does not
recognize your module after installation is
completed, cycle power to the adapter.
Make certain that you power these modules with an
intrinsically safe power supply. Do not exceed the
values listed in the specifications for the modules.