ABB ACQ80, Firmware Manual

Page: 304 / 390

304 Fault tracing
Warnings do not need to be reset; they stop showing when the cause of the
warning ceases. Warnings do not latch and the drive will continue to operate the
motor.
Faults latch inside the drive and cause the drive to trip, and the motor stops.
After the cause of a fault has been removed, the fault can be reset from a
selectable source (parameter
31.11 Fault reset selection
) such as the control
panel, Drive composer PC tool, the digital inputs of the drive, or fieldbus.
Reseting the fault creates an event
64FF Fault reset
. After the reset, the drive can
be restarted.
Note that some faults require a reboot of the control unit either by switching
the power off and on, or using parameter
96.08 Control board boot
– this is
mentioned in the fault listing wherever appropriate.
 Pure events
In addition to warnings and faults, there are pure events that are only recorded
in the event log of the drive. The codes of these events are included in the
Warning messages
table on page (
306
).
 Editable messages
For external events, the action (fault or warning), name and the message text
can be edited. To specify external events, use parameter
31 Fault functions
.
Warning/fault history

Event log
All indications are stored in the event log with a time stamp and other
information. The event log stores information on
• the last 8 fault recordings, that is, faults that tripped the drive or fault resets
• the last 10 warnings or pure events that occurred.
See section
Viewing warning/fault information
on page
304
.
Auxiliary codes
Some events generate an auxiliary code that often helps in pinpointing the
problem. On the control panel, the auxiliary code is stored as part of the details
of the event; in the Drive composer PC tool, the auxiliary code is shown in the
event listing.
 Viewing warning/fault information
The drive is able to store a list of the active faults actually causing the drive to
trip at the present time. The drive also stores a list of faults and warnings that
have previously occurred.