Troubleshooting/Service
308 UDC3500 Universal Digital Controller Product Manual 3/07
TOPIC See Page
• Ethernet Communications Failure
• Email Failure
331
7.8 Restore Factory Configuration 332
7.9 Software Upgrades 333
Installation related problems
Read the Installation section in this manual to make sure the instrument 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.
See Section
11.3 for further information.
Application related problems
Review the application of the controller; then, if necessary, direct your questions to the
local sales office.
Hardware and software related problems
Use the troubleshooting error message prompts and controller failure symptoms to
identify typical failures that may occur in the controller. Follow the troubleshooting
procedures to correct them.
7.2 Troubleshooting Aids
Overall error messages
An error message can occur:
• At power-up. See Subsection 7.3.
• When the Status Tests are requested. See Subsection 7.4.
• During continuous background tests while in normal operation. See Subsection 7.5.
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