Digital Electronics GP-2401 Series, Руководство пользователя

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Chapter 3 - Installation and Wiring
3-8
GP-2401/2501/2601 Series User Manual
3.2.2 Connecting the Power Supply
GP unit
Twisted Lines
Input/ Out-
put Power
power
input/output
main circuit
Motor
input/out-
put unit
GP unit
noise
reducing
transformer
voltage
transformer
Operation
Unit
Input/ Out-
put Power
• If the supplied voltage exceeds the
GP unit's range, connect a voltage
transformer.
Chapter 2 Specifi-
cations for the allowable voltage
range.
• For between the line and ground,
select a power supply that is low in
noise. If there is an excess amount
of noise, connect a noise reducing
transformer.
Use Voltage and Noise Re-
ducing transformers with
capacities exceeding 100VA.
• When supplying power to the GP
unit, please separate the input/output
and operation unit lines, as shown.
• To increase the noise resistance
quality of the power cable, simply
twist each power wire before
attaching the Ring Terminal.
• The power supply cable must not be
bundled or positioned close to main
circuit lines (high voltage, high
current), or input/output signal lines.
Twisted Lines
M a i n
Power
GP
power
GP unit
GP unit
M a i n
Power
GP
power
• Connect a lightning surge absorber,
as shown in the diagram, to deal with
power surges.
• To avoid excess noise, make the
power cable as short as possible.
• Be sure to ground the surge
absorber (E1) separately
from the GP unit (E2).
• Select a surge absorber that
has a maximum circuit volt-
age greater than that of the
peak voltage of the power
supply.
GP unit
lightening
surge
absorber