Troubleshooting/Service
Installation related problems
Read the Installation section in this manual to make sure the UDC2500 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.
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 which 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
•When the Status Tests are requested. See Subsection 7.4.
•During continuous background tests while in normal operation. See Subsection 7.5.
Controller failure symptoms
Other failures may occur that deal with the Power, Output, or Alarms. Refer to the controller failure symptom in Table
Check installation
If a set of symptoms still persists, refer to Section 2 - Installation and ensure proper installation and proper use of the controller in the system.
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