Correcting Faults - ABB ACQ550-x1-06A6-2 User Manual

252
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 LED on the control panel (if attached to the drive)
• sets an appropriate bit in an Alarm Word parameter (0308 or 0309). See
03: FB ACTUAL SIGNALS
• overrides the control panel display with the display of an alarm code and/or name
in the Fault mode.
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:
• Use the table in section
the problem.
• Reset the drive. See section
Fault listing
The following table lists the faults by code number and describes each. The fault
name is the long form shown in the Fault mode of the ACQ Control Panel when the
fault occurs. The fault names shown (for ACQ Control Panel only) in the Fault
Logger mode (see page 49) and the fault names for parameter 0401 LAST FAULT
may be shorter.
Fault
code
1
2
Diagnostics
Fault listing
Fault name in
panel
Output current is excessive. Check for and correct:
OVERCURRENT
• Excessive motor load.
• Insufficient acceleration time (parameters 2202
2205
ACCELER TIME
• Faulty motor, motor cables or connections.
Intermediate circuit DC voltage is excessive. Check for and correct:
DC OVERVOLT
• Static or transient overvoltages in the input power supply.
• Insufficient deceleration time (parameters 2203
2206
DECELER TIME
• Undersized brake chopper (if present).
• Verify that overvoltage controller is ON (using parameter 2005).
on page 89 for the bit definitions
below to find and address the root cause of
Fault resetting on page 257.
Description and recommended corrective action
2).
2).
ACQ550-U1 User's Manual
Group
1 and
ACCELER TIME
1 and
DECELER TIME