Rockwell Automation SA500 Diagnostics, Troubleshooting Guide - Manual (Page 11)

Diagnostics and Troubleshooting 2-1
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Diagnostics and Troubleshooting
The Distributed Power System contains built-in comprehensive diagnostics. In order
to diagnose and correct problems quickly, it is important to understand the types of
diagnostics that are performed, when they are performed, and how the results are
reported. This chapter describes the different types of diagnostics performed by the
system’s modules and how the results of these diagnostics are reported. This chapter
also describes how the system reacts if an error is detected.
An overview of these modes is shown in figure 2.1. The Distributed Power System
provides diagnostics at each level of operation as shown in figure 3.1.
Use these figures as a reference to quickly identify the system's requirements for
entering and operating in each mode. These figures also refer to specific sections in
the manual that provide additional information.
2.1 Definition of Terms Used in Diagnostics and
Troubleshooting
For the purpose of describing diagnostics and troubleshooting, this instruction manual
will use specific terms to refer to the types of errors that can be detected by the PMI
and the response of the PMI and UDC module to those errors.
A diagnostic is a software routine specifically designed to check for error conditions.
There are three types of diagnostics in SA3100 drives: power-up diagnostics, interlock
diagnostics, and run-time diagnostics.
A drive fault is an error specifically checked for by the PMI operating system that will
shut the drive down. Faults are reported in the Drive Fault register (202/1202) of the
UDC module and in the error log for the UDC task in which the fault occurred.
A drive shut-down occurs when any fault reported in the Drive register (202/1202)
occurs.
A drive warning is an error specifically checked for by the PMI operating system that
indicates the drive is not operating in an optimum manner. Drive warnings will not
shut the drive down.
An error is any condition other than the desired condition.
Interlock diagnostics are those diagnostics performed by the PMI operating system
in response to a drive control request from the programmer, e.g., PMI_RUN@, in
register 100/1100 of the UDC module dual port memory.
Power-up diagnostics consist of the initial tests for basic functionality performed by
all printed circuit board modules.
Run-time diagnostics are those diagnostics performed continuously by the PMI as a
background task after it has received its operating system from the UDC module.