WBPEEUI240751C0 8 - 1
Section 8
Troubleshooting
Introduction
This section provides troubleshooting information necessary to
isolate Harmony I/O system errors. It is not meant to be all
inclusive. If a problem exists that cannot be corrected using
the information provided in this instruction, contact a local
ABB service office for assistance.
Troubleshooting Procedures
Troubleshooting of the Harmony I/O system is performed
mainly by observing the block front panel LEDs. Problems are
also identified in problem reports made to the system, which
are viewable on a human system interface such as a work sta-
tion running Conductor software. If the initial indication of a
problem was from a problem report, observe block front panel
indications to help further isolate the problem.
NOTE: All tables in this section give corrective actions for single block indica-
tions. If the same indication is given for more than one block, consider a power
system or communications system problem.
The operation of the front panel LEDs is described in Section 7
and in tables that follow in this section. Refer to I/O Block
I/O Block I/O Block
I/O Block
Problem Reports
Problem ReportsProblem Reports
Problem Reports and I/O Block Status
I/O Block StatusI/O Block Status
I/O Block Status in this section for a
description of the reports made to the system.
Refer to Diagnostics
DiagnosticsDiagnostics
Diagnostics in this section for a description of both
online and offline diagnostics. The offline diagnostics can be
run to verify operation of a suspect I/O block.
Operating Mode - Normal and Fault LEDs
Table 8-1 summarizes the normal and fault LED indications
and gives corrective actions.
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