Operating Mode - Normal And Fault Leds - ABB Symphony Harmony Series Instruction

Troubleshooting
Introduction
Troubleshooting Procedures

Operating Mode - Normal and Fault LEDs

WBPEEUI240751C0
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 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
and in tables that follow in this section. Refer to
Problem Reports Problem Reports Problem Reports Problem Reports and
description of the reports made to the system.
Refer to
Diagnostics Diagnostics Diagnostics Diagnostics
online and offline diagnostics. The offline diagnostics can be
run to verify operation of a suspect I/O block.
Table 8-1 summarizes the normal and fault LED indications
and gives corrective actions.
I/O Block Status I/O Block Status I/O Block Status I/O Block Status in this section for a
in this section for a description of both
Section 8
Section 7
I/O Block I/O Block I/O Block I/O Block
8 - 1