
1/03 UDC 6300 Process Controller Product Manual 249
Section 8 – Troubleshooting / Service
8.1 Overview
Introduction
Instrument performance can be adversely affected by installation and
application problems as well as 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.
If a replacement of any part is required, follow the procedures listed under
“Parts Replacement Procedures”.
What’s in this
section?
The following topics are covered in this section.
Topic See Page
8.1 Overview 249
8.2 Troubleshooting Aids 251
8.3 Power-up Tests 253
8.4 Status Tests 254
8.5 Background Tests 257
8.6 Controller Failure Symptoms 259
8.7 Troubleshooting Procedures 260
8.8 Parts Replacement Procedures 266
8.9 Maintenance 277
WARNING—SHOCK HAZARD
!
TROUBLESHOOTING MAY REQUIRE ACCESS TO
HAZARDOUS LIVE CIRCUITS, AND SHOULD ONLY BE
PERFORMED BY QUALIFIED SERVICE PERSONNEL. MORE
THAN ONE SWITCH MAY BE REQUIRED TO DE-ENERGIZE
UNIT BEFORE SERVICING.
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