3G5A2-RPT01-E datasheet(64/182 Pages) OMRON

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3-4-1 Wiring the Power Source

The following diagrams show the proper way to connect the power source to the

Power Supply Unit. The terminals marked “NC” are not connected internally.

AC Power Supply Units: CV500-PS221/CVM1-PA208

1:1 isolation

transformer

Screw (3.5 mm head with

self-raising pressure plate)

Isolation transformer

• Noise between the PC

and ground can be signif-

icantly reduced by con-

necting a 1-to-1 isolation

transformer. Do not

ground the secondary

coil of the transformer.

AC power source

• Supply 100 to 120 or

200 to 240 VAC

• Keep voltage fluc-

tuations within the spe-

cified range (refer to

Appendix B Specifica

tions)

Breaker

Power Line

• Use AWG 14

twisted-pair cable

(cross-sectional

area: 2 mm2 min.

Use round crimp terminals for wiring. Do not connect bare stranded wires direct-

ly to terminal blocks. Use M3.5 screws for tightening crimp terminals.

7 mm max.

Caution

Tighten the screws on the terminal block of the AC Power Supply Unit to a torque

of 0.8 N

S m. The loose screws may result in short-circuit, burning, or malfunc-

tion.

M3.5 screw

Tightening torque: 0.8 N

S m

20 mm max.

WARNING Do not allow your hands or any other part of your body, or any object in contact

with your body, to come into contact with the AC power supply section after

power has been turned on. Contact with the power supply section will result in a

dangerous or fatal electrical shock.

Power Supply Units

Section 3-4

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