Chapter 3, About troubleshooting – Rockwell Automation AADvance Controller Troubleshooting and Maintenance Manual User Manual
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Document: 553634
(ICSTT-RM406F_EN_P) Issue: 089:
3-1
Troubleshooting covers system faults, module and channel faults, termination assemblies and field fault.
The corrective troubleshooting and maintenance regime is founded on a series of automatic diagnostic
systems, fault warning through module status indicators (LEDs) or reported to the application through
the Workbench and a principle of repair by replacement. All modules are replaceable.
In a safety critical redundant configuration remove only one module at a time unless a system
shutdown is planned.
In This Chapter
Prerequisites for Troubleshooting ................................................................. 3-1
Recovery Mode and How it Affects Controller Operation ..................... 3-2
Internal Diagnostics ............................................................................................ 3-2
Actions of the Diagnostic Systems ................................................................. 3-3
Latching and Non-Latching Faults ................................................................... 3-3
Common Fault Alarm ........................................................................................ 3-4
Fault Indications .................................................................................................. 3-4
Fault Reporting Reference Information ......................................................... 3-8
Understanding the State Variable (
Prerequisites for Troubleshooting
The troubleshooting procedures described in this manual make the premise that the System
Healthy alarm is connected to a variable in the AADvance Workbench and the alarm can be used as a
starting point for activities or, the processor module has defaulted to the Recovery Mode because of a
critical firmware failure.
The fault finding procedures make the following assumptions:
Chapter 3
About Troubleshooting