Rockwell Automation 1769-OF4CI CompactLogix 1769-OF4CI Module - Manual (Page 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.