ALARM 80, Unit initialised to default value
Parameter settings are initialised to default settings after a
manual reset. Reset the unit to clear the alarm.
ALARM 244, Heatsink temperature
This alarm is only for F Frame frequency converters. It is
equivalent to Alarm 29. The report value in the alarm log
indicates which power module generated the alarm:
ALARM 245, Heatsink sensor
This alarm is only for F Frame frequency converters. It is
equivalent to Alarm 39. The report value in the alarm log
indicates which power module generated the alarm
1 = left most inverter module.
2 = middle inverter module in F2 or F4 frequency
converter.
2 = right inverter module in F1 or F3 frequency
convertere.
3 = right inverter module in F2 or F4 frequency
converter.
5 = rectifier module.
ALARM 246, Power card supply
This alarm is only for F Frame frequency converter. It is
equivalent to Alarm 46. The report value in the alarm log
indicates which power module generated the alarm
1 = left most inverter module.
2 = middle inverter module in F2 or F4 frequency
converter.
2 = right inverter module in F1 or F3 frequency
converter.
3 = right inverter module in F2 or F4 frequency
converter.
5 = rectifier module.
ALARM 69, Power card temperature
This alarm is only for F Frame frequency converter. It is
equivalent to Alarm 69. The report value in the alarm log
indicates which power module generated the alarm
1 = left most inverter module.
2 = middle inverter module in F2 or F4 frequency
converter.
2 = right inverter module in F1 or F3 frequency
converter.
3 = right inverter module in F2 or F4 frequency
converter.
5 = rectifier module.
ALARM 248, Illegal power section configuration
This alarm is only for F Frame frequency converters. It is
equivalent to Alarm 79. The report value in the alarm log
indicates which power module generated the alarm:
1 = left most inverter module.
2 = middle inverter module in F2 or F4 frequency
converter.
2 = right inverter module in F1 or F3 frequency
converter.
3 = right inverter module in F2 or F4 frequency
converter.
5 = rectifier module.
WARNING 249, Rect. low temperature
IGBT sensor fault (highpower units only).
WARNING 250, New spare part
A component in the frequency converter has been
replaced. Reset the frequency converter for normal
operation.
WARNING 251, New typecode
The power card or other components have been replaced
and the typecode changed. Reset to remove the warning
and resume normal operation.
ALARM 300, Mains cont. fault
Mains contactor fault is displayed when the feedback
signal indicates that the contactor is not in the expected
state, i.e., either the contactor could not be closed or could
not be opened, or that the feedback signal itself is wrong.
Troubleshooting:
Control and feedback wiring check
Verify that the control and feedback wiring is correct and
that the electrical connections are tight. The 24 VDC
output of the control card is taken from terminal 12, and
the contactor feedback comes back to terminal 32. The
contactor is energized from a control transformer through
the power card relay. Perform a visual inspection to verify
there is no physical damage to the wire insulation. This
should be done for the control and for the feedback
wiring. Perform a continuity check to test for wire
breakage.
Perform the Control Card Digital Inputs/Outputs Test ().
Contactor test
Perform a continuity test of the contactor between the
input terminal and output terminals. If continuity is
detected, that the contactor fuse must be replaced. There
should also be no continuity between any two test points
of the 3 phases for either the input or the output side.
Loss of mains
A loss of mains voltage will cause the contactor to open.
Check the mains supply and consider employing auto
reset.
Troubleshooting
VLT Active Filter AAF 00x
MG.90.V2.02 - VLT® is a registered Danfoss trademark
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