Rockwell Automation 6181 Industrial Computer - Manual (Page 46)

4–2 Adding/Removing System Components
Publication 6181-UM001D-EN-P
Specific configurations of the RAC6181 Computer are certified for
Class I, Division 2, Groups A, B, C, D, T4A temperature code, hazardous
areas. If you are using the RAC6181 in a hazardous location, review the
following safety considerations:
ATTENTION: EXPLOSION HAZARD! Do not
connect or disconnect equipment while circuit is live
unless area is known to be non-hazardous.
Note: Do not connect or disconnect RAC6181 Computer
connections in the presence of possible hazardous
materials. Making or breaking these connections may
cause a spark.
ATTENTION: EXPLOSION HAZARD! Substitution
of components may impair suitability for Class I, Div 2
hazardous locations.
ATTENTION: The RAC6181 Series B computer is only
certified for Class I, Div 2 environments in factory-
shipped configurations. Adding PC cards or changing the
factory-shipped configuration will nullify this
certification.
The RAC6181 2-Slot and 4-Slot Computers accommodate up to two or
four additional ISA/PCI compatible add-in cards. Due to thermal
considerations with the unit, total add-in power is limited to 15W of
power dissipation (within the product enclosure).
Hazardous Locations
Thermal Considerations
for Add-In Cards (2-Slot
and 4-Slot Chassis)