ABB ACQ550-U1-011A-6, Руководство пользователя

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252 ACQ550-U1 User’s Manual
Diagnostics
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 Group
03: FB ACTUAL SIGNALS on page 89 for the bit definitions
• 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 Fault listing below to find and address the root cause of
the problem.
• Reset the drive. See section Fault resetting on page 257 .
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 Fault name in
panel
Description and recommended corrective action
1
OVERCURRENT
Output current is excessive. Check for and correct:
• Excessive motor load.
• Insufficient acceleration time (parameters 2202
ACCELER TIME
1 and
2205
ACCELER TIME
2).
• Faulty motor, motor cables or connections.
2
DC OVERVOLT
Intermediate circuit DC voltage is excessive. Check for and correct:
• Static or transient overvoltages in the input power supply.
• Insufficient deceleration time (parameters 2203
DECELER TIME
1 and
2206
DECELER TIME
2).
• Undersized brake chopper (if present).
• Verify that overvoltage controller is ON (using parameter 2005).