3600 Series Flat Panel Industrial PC
Chapter 2 – Installation
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142214 (F)
Power Management
The following paragraphs explain the system power, the power supply, and the
effects of excessive heat, electrical noise, and line voltage variation of the 3600
unit.
Using isolation transformers on the incoming AC power line to the system is
always a good practice. An isolation transformer is especially desirable in cases in
which heavy equipment is likely to introduce noise onto the AC line.
The isolation transformer can also serve as a step-down transformer to reduce the
incoming line voltage to a desired level. The transformer should have a sufficient
power rating (units of volt-amperes) to supply the load adequately.
Proper grounding is essential to all safe electrical installations. Refer to the
relevant Federal, State/Provincial, and local electric codes, which provide data as
to the size and types of conductors, color codes and connections necessary for safe
grounding of electrical components. The code specifies that a grounding path must
be permanent (no solder), continuous, and able to safely conduct the ground-fault
current in the system with minimal impedance (minimum wire required is #18
AWG, 1 mm).
Observe the following practices:
••••
Separate ground wires (P.E. or Protective Earth) from power wires at the point of
entry to the enclosure. To minimize the ground wire length within the enclosure,
locate the ground reference point near the point of entry for the plant power
supply.
••••
All electrical racks or chassis and machine elements should be Earth Grounded
in installations where high levels of electrical noise can be expected. The
rack/chassis should be grounded with a ground rod or attached to nearby Earth
structure such as a steel support beam. Each different apparatus should be
connected to a single Earth Ground point in a “star” configuration with low
impedance cable. Scrape away paint and other non-conductive material from the
area where a chassis makes contact with the enclosure.
••••
In addition to the ground connection made through the mounting bolt or stud, use
a one-inch metal braid or size #8 AWG wire to connect between each chassis
and the enclosure at the mounting bolt or stud.
Power Supply
The power supply on 3612 models provides 90 watts of output power throughout
the system’s temperature range. The power supply on 3615 models provides 150
watts of output power throughout the system’s temperature range. The power
available for expansion is limited as shown in Table 2–6.
