5015T Flat Panel Industrial Monitor Chapter 2 Installation
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142029 (D)
noise generators include switching components, relays, solenoids, motors, and motor
starters.
Refer to the relevant Federal, State/Provincial, and local electric codes, which provide
data such as the size and types of conductors, color codes and connections necessary for
safe grounding of electrical components. It is recommended that high- and low-voltage
cabling be separated and dressed apart. In particular, AC cables and switch wiring should
not be in the same conduit with all communication cables.
Line Voltage Variation
The power supply section of the unit is built to sustain the specified line fluctuations and
still allow the system to function in its operating margin. As long as the incoming voltage
is adequate, the power supply provides all the logic voltages necessary to support the
monitor unit.
Unusual AC line variations may cause undesirable system shutdowns. As a first step to
reduce line variations, correct any possible feed problems in the distribution system. If
this correction does not solve the problem, use a constant voltage transformer. The
constant voltage transformer stabilizes the input voltage to the systems by compensating
for voltage changes at the primary in order to maintain a steady voltage at the secondary.
When using a constant voltage transformer, check that the power rating is sufficient to
supply the unit.
Location and Enclosure
Place the unit to allow easy access to the system ports.
Account for the unit dimensions when selecting an installation location or enclosure.
You can maintain the NEMA 4 seal by mounting the unit in an approved enclosure
that has a 14 gauge (0.075 in./1.9 mm thick) steel or (0.125 in./3.2 mm thick) aluminum
front face.
Place the unit at a comfortable working level.
Mount the unit in an upright position, if possible.
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 airflow 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
reliable filter is used. This filtration prevents conductive particles or other harmful
contaminants from entering the enclosure.
Do not select a location near equipment that generates excessive electromagnetic
interference (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, as outlined in the Product Specifications and Ratings section.
Install the unit so 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.
