Phase Imbalance; Internal Fault - Danfoss VLT AFE 302 Operating Instructions Manual

How to Programme
WARNING/ALARM 7, DC over voltage:
If the DC bus voltage exceeds the limit, the AFE trips after a
time.
Alarm/warning limits:
Undervoltage
Voltage warning low
Voltage warning high
Overvoltage
The voltages stated are the DC bus voltage of the AFE with a
5 5
tolerance of ± 5%.
WARNING/ALARM 8, DC under voltage:
If the DC bus voltage drops below the "voltage warning low"
limit (see table above), the frequency converter checks if 24V
backup supply is connected.
If no 24V backup supply is connected, the frequency
converter trips after a given time (depending on the unit).
To check whether the supply voltage matches the AFE, see
General Specifications.
WARNING/ALARM 9, Inverter overloaded:
The AFE is about to cut out because of an overload (too high
current for too long). The counter for electronic, thermal
protection gives a warning at 98% and trips at 100%, while
giving an alarm. You cannot reset the AFE until the counter is
below 90%.
The fault is that the frequency converter is overloaded by
more than 100% for too long.
WARNING/ALARM 13, Over Current:
The peak current limit (approx. 200% of the rated current) is
exceeded. The warning will last approx. 8-12 sec., then the
AFE trips and issues an alarm.
ALARM 14, Earth fault:
There is a discharge from the output phases to earth. Turn
off the AFE and remove the earth fault.
ALARM 15, Incomplete hardware:
A fitted option is not handled by the present control board
(hardware or software).
ALARM 16, Short-circuit
There is short-circuiting in the outout phases.
Turn off the AFE and remove the short-circuit.
WARNING/ALARM 17, Control word timeout:
There is no communication to the AFE.
The warning will only be active when 8-04 Control Word
Timeout Function is NOT set to OFF.
8-03 Control Word Timeout Time could possibly be increased.
WARNING 23, Internal fan fault:
The fan warning function is an extra protection function that
checks if the fan is running/mounted. The fan warning can
be disabled in 14-53 Fan Monitor (set to [0] Disabled).
56
®
VLT Active Front End AFE 302 Operating Instructions Liebherr
WARNING 24, External fan fault:
The fan warning function is an extra protection function that
checks if the fan is running/mounted. The fan warning can
be disabled in 14-53 Fan Monitor (set to [0] Disabled).
ALARM 29, Heat sink temperature:
3 x 525 - 690V
The temperature of the AFE heat sink has exeeded the limit.
[VDC]
P400; 110°C
553
P800/PIM2: 95°C
585
The temperature fault is cannot be reset untill the
1084
temperature of the heat sink has dropped th a safe level.
P400: 95°C
P800/PIM2: 80°C
ALARM 33, Inrush fault:
Too many power ups have occured within a short time
period. See the chapter General Specifications for the allowed
number of power ups within one minute.
WARNING/ALARM 34, Fieldbus communication fault:
The fieldbus on the communication option card is not
working correctly. Please check parameters associated with
the module and make sure module is properly inserted in
Slot A of the frequency converter. Check the wiring for
fieldbus.
ALARM 36, Mains failure:
The mains failure alarm is generated at the start of DC bus
regulation if the AFE cannot detect a valid mains frequency.
ALARM 37, Phase imbalance:
There is a current imbalance between the power units
ALARM 38, Internal fault:
By this alarm it may be necessary to contact your Danfoss
supplier. Some possible alarm messages:
256-5
11
512-7
67
768-1
023
1024-
1276
1080-
1295
1296-
1311
1312-
1327
1360-
1375
1376-
1391
1536-
1791
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MG.33.X2.02 - VLT is a registered Danfoss trademark
A defect has been detected with the power EEPROM data.
This could indicate that an incorrect spare part was used or
that the power EEPROM was updated with incorrect data.
A defect has been detected with the control card EEPROM
data.
A problem has occurred while attempting to initialize or
restore parameter information.
A problem has been encountered while attempting to send
internal communication between options or the power
card. A report value of 1027 may indicate a hardware
failure.
A software version error has been detected.
An option with old software has been installed.
An unsupported option has been installed.
There is a version mismatch between the installed options
and components.
An installed option did not properly initialize.
An exception in the control card has been registered. Extra
information is written to the LCP.