Rockwell Automation Allen-Bradley 6155F-NPWE, User Manual, Page: 15 / 56

Rockwell Automation Publication 6155R-UM002E-EN-P - February 2014 15
Installation Chapter 2
Installation Guidelines Follow these guidelines to make sure your computer provides safe and reliable service.
• The installation site must have sufficient power.
• In dry environments, static charges can build up easily. Proper grounding
of the computer helps to reduce static discharges, which can cause shock
and damage electronic components.
• The enclosure must allow sufficient space around air inlets and outlets to
provide the circulation necessary for cooling. See
Mounting Clearance
Requirements on page 15 for further information. Never allow air passages
to become obstructed.
•
The ambient air temperature must not exceed the maximum operating
temperature specified in Table 4 on page 48 . Consider a user-supplied fan,
heat exchanger, or air conditioner for heat generated by other devices in
the enclosure.
•
The humidity of the ambient air must not exceed limits specified in
Table 4 on page 48 and must avoid condensation.
• The enclosure or bottom plate must remain in place at all times during
operation. The bottom plate provide protection against high voltages inside the
computer and inhibits radio-frequency emissions that can interfere with other
equipment.
Mounting Clearance
Requirements
Table 1 - Minimum Clearances
ATTENTION: To maintain an electrically safe installation, AC powered
computers must be plugged into a grounded outlet.
TIP
Hot air rises. The temperature at the top of the enclosure is often
higher than the temperature in other parts of the enclosure, especially
if air is not circulating.
IMPORTANT
The computer can operate at a range of extremes. However, the life
span of any electronic device is shortened if you continuously operate
the computer at its highest rated temperature.
IMPORTANT
Because of self-heating, do not operate the computer in an enclosure with the
minimum clearances unless adequate ventilation or other cooling methods are
used to lower the temperature within the enclosure.
Allow enough clearance to easily install or remove peripheral components, such
as internal drives.
Description Value
Sides of computer 25 mm (1 in.)
Top of computer 51 mm (2 in.)
Bottom of computer 13 mm (0.5 in.)
(1)
(1) This clearance is not required when provided mounting hardware is used.
Rear of computer None
Front of computer Adequate clearance for any cables used that extend beyond the handle