Rockwell Automation 1769-OF8V Compact Analog Output Module - Manual (Page 8)

8 Compact 1769-OF8V Analog Output Module
Publication 1769-IN066D-EN-P - June 2010
Module Spare/Replacement Parts
• Terminal block, catalog number 1769-RTBN12 (1 per kit)
(A-B part number A22112-319-01)
• Door, catalog number 1769-RD (2 per kit)
Field Wiring Connections
Grounding the Module
This product is intended to be mounted to a well-grounded mounting surface such as a metal
panel. Additional grounding connections from the module’s mounting tabs or DIN rail (if
used), are not required unless the mounting surface cannot be grounded. Refer to Industrial
Automation Wiring and Grounding Guidelines, Allen-Bradley publication 1770-4.1, for additional
information.
System Wiring Guidelines
Consider the following when wiring your system:
• All module commons (ANLG COM) are connected in the analog module. The analog
common (ANLG COM) is not connected to earth ground inside the module.
• Channels are not 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.
(1)
• To ensure 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.
• Voltage outputs (Vout 0+ to Vout 7+) of the 1769-OF8V module are referenced to
ANLG COM. Load resistance for a voltage output channel must be equal to or
greater than 1K
Ω.
(1) In environments where high frequency noise may be present, it may be necessary to ground the shield via a 0.1µF capacitor
at the load end and also ground the module end without a capacitor.