3408/3410/3412 Series Industrial PC System Manual
44
Mounting Considerations
Once you have established a location for the unit, consider the following when selecting
an enclosure:
•
Select a NEMA-rated enclosure, and place the unit to allow easy access to the system
ports.
•
Account for the unit’s depth when choosing the depth of the enclosure.
•
Provide a NEMA 4 seal by mounting the unit in an approved enclosure that has a 14
gauge (0.075"/1.9 mm thick) steel or (0.125"/3.2 mm thick) aluminum front face.
•
Mount the unit in an upright position.
•
Place the unit at a comfortable working level.
•
Consider locations of accessories such as AC power outlets and lighting (interior
lighting and windows) for installation and maintenance convenience.
•
Prevent condensation by installing a thermostat-controlled heater or air conditioner.
•
Avoid obstructing the air flow to allow for maximum cooling.
•
Place any fans or blowers close to the heat-generating devices. If using a fan, make
sure that outside air is not brought inside the enclosure unless a fabric or other reli-
able filter is used. This filtration prevents conductive particles or other harmful con-
taminants from entering the enclosure.
•
Do not select a location near equipment that generates excessive electromagnetic in-
terference (EMI) or radio frequency interface (RFI) (equipment such as high- power
welding machines, induction heating equipment, and large motor starters).
•
Do not place incoming power line devices (such as isolation or constant voltage
transformers, local power disconnects, and surge suppressers) near the system. The
proper location of incoming line devices keeps power wire runs as short as possible
and minimizes electrical noise transmitted to the unit.
•
Make sure the location does not exceed the unit’s shock, vibration, and temperature
specifications (refer to Appendix A for specifications).
•
Install the unit in the panel in such a way as to ensure that it does not cause a hazard
from uneven mechanical loading.
•
Incorporate a readily accessible disconnect device in the fixed wiring on permanently
connected equipment.
•
Avoid overloading the supply circuit.
Mounting the Unit
Once the conditions in the preceding sections have been met, perform the following steps
to mount the unit:
1.
Locate a position for your system that meets the specifications required (see previous
sections and Appendix A).
2.
Create a panel cutout. Refer to the dimensions in Figures 3-20 through 3-23.
3.
Make sure the area around the cutout is clean and free from metal burrs.
4.
Install the unit.
