Pro-face AGP-3300 Series Guía de instalación descargar pdf (Pagina 11)

11

(4) Attach the Power connector (Plug) to

the GP.

2. Power Supply Cautions

• Input and Output signal lines must be

separated from the power control

cables for operational circuits.

• To improve noise resistance, be sure

to twist the ends of the power cord

wires before connecting them to the

Power connector (Plug).

• The GP 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.

• To reduce noise, make the power cord

as short as possible.

• If the supplied voltage exceeds the GP

unit’s range, connect a voltage trans-

former.

• Be sure to use a low noise power sup-

ply between the line and the ground. If

there is an excess amount of noise,

connect a noise reducing transformer.

• The temperature rating of field installed

conductors: 75

o

C only.

• Use voltage and noise reducing trans-

formers with capacities exceeding

Power Consumption value.

• Must be used with a Class 2 Power

Supply. (24 VDC)

• Connect a surge absorber to handle

power surges.

• Be sure to ground the surge absorber

(E1) separately from the GP unit (E2).

Select a surge absorber that has a maxi-

mum circuit voltage greater then that of

the peak voltage of the power supply.

3. Grounding Cautions

• Be sure to create an exclusive ground

for the Power Cord’s FG terminal. Use

a grounding resistance of 100 Ω , a

wire of 2 mm

2

or thicker, or your coun-

try’s applicable standard.

• The SG (signal ground) and FG (frame

ground) terminals are connected inter-

nally in the GP unit.

When connecting the SG line to

another device, be sure that the design

of the system/connection does not pro-

duce a shorting loop.

• The grounding wire should have a

cross sectional area greater then

2 mm

2

. Create the connection point as

close to the GP unit as possible, and

make the wire as short, as possible.

When using a long grounding wire,

replace the thin wire with a thicker

wire, and place it in a duct.

Power Connector (Socket)

Power connector (Plug)

FG

+

-

AGP-3300T

Lightening Surge Absorber

E1 E2

FG

GP

GP unit

Other

Equipment

Exclusive Grounding

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