Rockwell-automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I Manual do Utilizador descarregar pdf (Página 39)

Publication 1769-UM008A-EN-P - November 2001

Installation and Wiring 3-17

3. At one end of the cable, twist the drain wire and foil shield

together.

Under normal conditions, this drain wire and shield junction

must be connected to earth ground, via a panel or DIN rail

mounting screw at the analog I/O module end. Keep the length

of the drain wire as short as possible.

In environments where high frequency noise may be present,

the cable shields should be grounded via a 0.1 µF capacitor at

the end using the data. In other words, for analog inputs, the

cable shield should be grounded via the 0.1 µF capacitor at the

analog module end. For analog outputs, the cable shield should

be grounded via a 0.1 µF capacitor at the load end.

4. At the other end of the cable, cut the drain wire and foil shield

back to the cable.

5. Connect the signal wires to the terminal block as shown in

Analog Input Wiring on page 3-16 and Analog Output Wiring on

page 3-21. Connect the other end of the cable to the analog

input or output device.

6. Repeat steps 1 through 5 for each channel on the module.

ATTENTION

Be careful when stripping wires. Wire fragments

that fall into a module could cause damage at

power up.

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Rockwell-automation 1769-IF4XOF2 Compact 8-Bit Low Resolution Analog I Manual do Utilizador Página 39