Rockwell Automation 1797-OE8 FLEX Ex Analog Modules User Manual - Manual (Page 44)

Publication 1797-6.5.1 - May 2005
3-10 How to Install Your FLEX Ex Analog Modules
3. Make sure the pins on the bottom of the module are straight so they will
align properly with the connector in the terminal base unit.
4. Position the module (4) with its alignment bar (5) aligned with the
groove (6) on the terminal base.
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. 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 analog modules is done through the 1797-TB3 and
1797-TB3S terminal base units.
41307
ATTENTION
The FLEX Ex analog 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.