Troubleshooting/Service
8/05 UDC2500 Universal Digital Limit ControllerProduct Manual 71
7 Troubleshooting/Service
7.1 Overview
Introduction
Instrument performance can be adversely affected by installation and application
problems as well as by hardware problems. We recommend that you investigate the
problems in the following order:
• installation related problems
• application related problems
• hardware and software related problems
and use the information presented in this section to solve them.
What's in this section?
The following topics are covered in this section.
TOPIC See Page
7.1 Overview 71
7.2 Troubleshooting Aids
• Overall Error Messages
• Controller Failure Symptoms
• Customer Support
• Determining the Software Version Number
72
7.3 Power-up Tests 74
7.4 Status Tests 74
7.5 Background Tests 75
7.6 Controller Failure Symptoms 77
7.7 Troubleshooting Procedures
• Power Failure
• Alarm Relay Output Failure
• Keyboard Failure
78
7.8 Restore Factory Configuration 84
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
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