Danfoss VLT AutomationDrive FC 300 Programming Manual page 213

Troubleshooting
WARNING 89, Mechanical brake sliding
The hoist brake monitor has detected a motor speed > 10
RPM.
ALARM 90, Feedback monitor
Check the connection to encoder/resolver option and
eventually replace the MCB 102 or MCB 103.
ALARM 91, Analog input 54 wrong settings
Switch S202 has to be set in position OFF (voltage input)
when a KTY sensor is connected to analog input terminal
54.
WARNING/ALARM 104, Mixing fan fault
The fan monitor checks that the fan is spinning at power-
up or whenever the mixing fan is turned on. If the fan is
not operating, then the fault is annunciated. The mixing-
fan fault can be configured as a warning or an alarm trip
by 14-53 Fan Monitor.
Troubleshooting Cycle power to the frequency converter
to determine if the warning/alarm returns.
WARNING 163, ATEX ETR cur.lim.warning
The frequency converter has run above the the charac-
teristic curve for more than 50 s. The warning is activated
at 83% and de-activated at 65% of the permitted thermal
overload.
ALARM 164, ATEX ETR cur.lim.alarm
Operating above the characteristic curve for more than 60
s within a period of 600 s activates the alarm and the
frequency converter trips.
WARNING 165, ATEX ETR freq.lim.warning
The frequency converter is running more than 50 s below
the permitted minimum frequency (1-98 ATEX ETR interpol.
points freq. [0]).
ALARM 166, ATEX ETR freq.lim.alarm
The frequency converter has operated more than 60 s (in a
period of 600 s) below the permitted minimum frequency
(1-98 ATEX ETR interpol. points freq. [0]).
ALARM 246, Power card supply
This alarm is only for F Frame frequency converters. 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.
WARNING 250, New spare part
A component in the frequency converter has been
replaced. Reset the frequency converter for normal
operation.
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VLT AutomationDrive Programming Guide
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.
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MG33MG02 - VLT is a registered Danfoss trademark
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