Xycom 1510, Руководство пользователя, Страница: 27 / 41

Chapter Three - Installation
27
Excessive Heat
The 1510 withstands operating temperatures from 0º to 50º C (32º to 122º F). To keep
the temperature in range, the cooling air at the base of the system must not exceed 50°C.
Allocate proper spacing between internal components installed in the enclosure.
When the air temperature is higher than 50ºC in the enclosure use a fan or air conditioner.
Electrical Noise
Electrical noise is seldom responsible for damaging components, unless extremely high
energy or high voltage levels are present. However, noise can cause temporary malfunc-
tions that can result in hazardous machine operation in certain applications. Noise may
be present only at certain times, may appear at widely spread intervals, or in some cases
may exist continuously.
Noise commonly enters through input, output, and power supply lines and may also be
coupled through the capacitance between these lines and noise signal carrier lines. This
usually results from the presence of high voltage or long, close-spaced conductors. When
control lines are closely spaced with lines carrying large currents, the coupling of mag-
netic fields can also occur. Use shielded cables to help minimize noise. Potential noise
generators include switching components relays, solenoids, motors, and motor starters.
Refer to the relevant Federal, State, Provincial, and local electric codes that 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 the high voltage and low
voltage cabling be separated and dressed apart. In particular, the AC cables and switch
wiring should not be in the same conduit with all communication cables.
Line Voltage Variation
The unit’s power supply is built to operate with output voltage ranges of 100-120 VAC
and 200-240 VAC with an AC power supply, and still allow the system to function
within its operating margin.
As long as the incoming voltage is adequate, the power sup-
ply provides all the logic voltages necessary to support the processor, memory, and I/O.
In cases in which the installation is subject to unusual AC line variations, use a constant
voltage transformer to prevent the system from shutting down too often. However, a first
step toward the solution of the line variations is to correct any possible feed problem in
the distribution system. If this correction does not solve the problem, use a constant volt-
age transformer.
The constant voltage transformer stabilizes the input voltage to the 1510 by compensat-
ing for voltage changes at the primary in order to maintain a steady voltage at the secon-
dary. When using a constant voltage transformer, check that the power rating is sufficient
to supply the 1510.