Danfoss VLT AQUA Drive FC 200 Operating Instructions Manual page 183

9 Troubleshooting
WARNING 77, Reduced power mode:
This warning indicates that the drive is operating in reduced power mode
(i.e. less than the allowed number of inverter sections). This warning will
be generated on power cycle when the drive is set to run with fewer
inverters and will remain on.
ALARM 79, Illegal power section configuration
The scaling card is the incorrect part number or not installed. Also MK102
connector on the power card could not be installed.
ALARM 80, Unit initialized to default value
Parameter settings are initialized to default settings after a manual reset.
ALARM 244, Heatsink temperature
Report value indicates source of alarm (from left):
1-4 Inverter
5-8 Rectifier
ALARM 245, Heatsink sensor
No feedback from the heatsink sensor. Report value indicates source of
alarm (from left):
1-4 Inverter
5-8 Rectifier
ALARM 246, Power card supply
The supply on the power card is out of range Report value indicates
source of alarm (from left):
1-4 Inverter
5-8 Rectifier
ALARM 247, Power card temperature
9
Power card over temperature Report value indicates source of alarm
(from left):
1-4 Inverter
5-8 Rectifier
ALARM 248, Illegal power section configuration
Power size configuration fault on the power card Report value indicates
source of alarm (from left):
1-4 Inverter
5-8 Rectifier
ALARM 249, Rect. low temp.
The temperature of the rectifier heat sink is too low. This could indicate
that the temperature sensor is defect.
ALARM 250, New spare part
The power or switch mode power supply has been exchanged. The fre-
quency converter type code must be restored in the EEPROM. Select the
correct type code in par. 14-23
on the unit. Remember to select 'Save to EEPROM' to complete.
ALARM 251, New type code
The frequency converter has a new type code.
ALARM 300, Mains Cont. Fault
The feedback from the mains contactor did not match the expected value
within the allowed time frame. Contact your supplier.
ALARM 301, SC Cont. Fault
The feedback from the soft charge contactor did not match the expected
value within the allowed time frame. Contact your supplier.
ALARM 302, Cap. Over Current
Excessive current was detected through the AC capacitors. Contact your
supplier.
182
Typecode Setting according to the label
MG.20.T1.02 - VLT
VLT AQUA Low Harmonic Drive Operating In-
ALARM 303, Cap. Earth Fault
An earth fault was detected through the AC capacitor currents. Contact
your supplier.
ALARM 304, DC Over Current
Excessive current through the DC link capacitor bank was detected. Con-
tact your supplier.
ALARM 305, Mains Freq. Limit
The mains frequency was outside the limits. Verify that the mains fre-
quency is within product specification.
ALARM 306, Compensation Limit
The needed compensation current exceeds unit capability. Unit is running
at full compensation.
ALARM 308, Resistor temp
Excessive resistor heatsink temperature detected.
ALARM 309, Mains Earth Fault
An earth fault was detected in the mains currents. Check the mains for
shorts and leakage current.
ALARM 310, RTDC Buffer Full
Contact your supplier.
ALARM 311, Switch. Freq. Limit
The average switching frequency of the unit exceeded the limit. Verify
that parameters 300-10 and 300-22 are set correctly. If so, contact your
supplier.
ALARM 312, CT Range
Current transformer measurement limitation was detected. Verify that the
CTs used are an appropriate ratio.
ALARM 314, Auto CT Interrupt
Auto CT detection was interrupted by the user.
ALARM 315, Auto CT Error
An error was detected while performing auto CT detection. Contact your
supplier.
ALARM 316, CT Location Error
The Auto CT function could not determine the correct locations of the
CTs.
ALARM 317, CT Polarity Error
The Auto CT function could not determine the correct polarity of the CTs.
ALARM 318, CT Ratio Error
The Auto CT function could not determine the correct primary rating of
the CTs.
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