ACTi E66 Installation Guide download pdf (Page 19)

E-19

8 Power Supply Cautions

Please pay special attention to the following instructions when connecting the

power plug to the PS-A unit.

• If the power supply voltage exceeds the PS-A unit's specified range, connect a

voltage transformer.

• Between the line and the ground, be sure to use a low noise power supply. If

there is still an excessive amount of noise, connect a noise reducing transformer.

Be sure any constant or insulating transformer used has a capacity of

200VA or more.

9 Grounding Cautions

• When attaching a wire to the PS-A unit's rear face FG terminal, (on the Power

Input Terminal Block), be sure to create an exclusive ground.

• FG and SG terminals are internally connected in the PS-A. When connecting to

another device, be sure to create an SG shorting loop in your system.

• Input and Output signal lines must be separated from the power control cables

for operational circuits.

• To increase noise resistance, be sure to twist the ends of the power cord wires

before connecting them to the PS-A unit's power terminal block.

• The PS-A unit's power supply cord should not be bundled with or kept close to

main circuit lines (high voltage, high current), or input/output signal lines.

• Connect a surge absorber to handle power surges.

• Ground the lightning surge absorber and the PS-A separately.

• Select a lightning surge absorber which will not exceed the allowable

circuit voltage, even when the voltage rises to the maximum.

• To reduce noise, make the power cord as short as possible.

10 Input/Output Signal Line Cautions

• Input and Output signal lines must be separated from the power control cables

used for operational circuits.

• If this is not possible, use a shielded cable and the shield should be grounded.

*1 Use a grounding resistance of 100

Ω

, a wire of 2mm

or thicker, or your country's appli-

cable standard.

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ACTi E66 Installation Guide Page 19