Honeywell UDC 3300 Product Manual page 256

Installation related
problems
Application related
problems
Hardware and software
related problems
244
Read the Installation section in this manual to make sure the UDC 3300
has been properly installed. The installation section provides information
on protection against electrical noise, connecting external equipment to
the controller, and shielding and routing external wiring.
ATTENTION
System noise induced into the controller will result in
diagnostic error messages recurring. If the diagnostic error messages can
be cleared, it indicates a "soft" failure and is probably noise related.
If system noise is suspected, completely isolate the controller from all
field wiring. Use calibration sources to simulate PV and check all
controller functions; i.e. Gain, Rate, Reset, Output, Alarms, etc.
Review the application of the controller; then, if necessary, direct your
questions to the local sales office.
Use the troubleshooting error message prompts and controller failure
symptoms to identify typical failures which may occur in the controller.
Follow the troubleshooting procedures to correct them.
UDC 3300 Controller Product Manual 4/00