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Chapter 3 - Installation and Wiring

GP-2400/2500/2600 Series User Manual

3-8

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

Main

Power

GP

power

GP unit

GP unit

Main

Power

GP

power

• Connect a lightening surge ab-

sorber, 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

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