ABB ACH550-01 User Manual page 361

ACH550 User's Manual
Flashing green – alarms
For less severe errors, called alarms, the diagnostic display is
advisory. For these situations, the drive is simply reporting that it
had detected something "unusual". In these situations, the drive:
• flashes the green LED on the drive (does not apply to alarms
that arise from control panel operation errors)
• flashes the green status LED on the control panel (if attached
to the drive)
• sets an appropriate bit in an Alarm Word parameter (0308 or
0309). See
definitions.
• overrides the control panel display with the display of an
alarm code and/or name.
Alarm messages disappear from the control panel display after a
few seconds. The message returns periodically as long as the
alarm condition exists.
Correcting faults
The recommended corrective action for faults is:
1. Use the
the root cause of the problem.
2. Reset the drive. See section
Diagnostics and maintenance
Group 03: FB ACTUAL SIGNALS
Fault listing table on page
for bit
350 to find and address
Fault resetting on page 358.
349