Rockwell-automation 1769-OF4CI CompactLogix 1769-OF4CI Module Manual de usuario descargar pdf (Pagina 13)

Compact 1769-OF4CI Isolated Analog Output Module 13

Rockwell Automation Publication 1769-IN075B-EN-P - August 2010

System Wiring Guidelines

Consider the following when wiring your system:

• Channels are isolated from each other.

• Use Belden 8761, or equivalent, shielded wire.

• Under normal conditions, the 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 shield connection to ground as

short as possible.

• For optimum accuracy, limit overall cable impedance by keeping your

cable as short as possible. Locate the I/O system as close to your sensors

or actuators as your application will permit.

• Load resistance for each current output channel must remain between

0…500 Ω..

Wiring Output Devices

TIP

In environments where high frequency noise may be present, it

may be necessary to ground the shield via a 0.1 µF capacitor at

the load end and also ground the module end without a capacitor.

ATTENTION: Miswiring of the module to an AC/DC source will

damage the module.

Be careful when stripping wires. Wire fragments that fall into a

module could cause damage at power up. Once wiring is complete,

ensure the module is free of all metal fragments.

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Rockwell-automation 1769-OF4CI CompactLogix 1769-OF4CI Module Manual de usuario Pagina 13