Alarm 37, internal fault number 0: Communication fault between control
card and BMC2.
Alarm 38, internal fault number 1: Flash EEPROM fault on control card.
Alarm 39, internal fault number 2: RAM fault on control card
Alarm 40, internal fault number 3: Calibration constant in EEPROM.
Alarm 41, internal fault number 4: Data values in EEPROM.
Alarm 42, internal fault number 5: Fault in motor parameter database.
Alarm 43, internal fault number 6: General power card fault.
Alarm 44, internal fault number 7: Minimum software version of control
card or BMC2
Alarm 45, internal fault number 8: I/O fault (digital input/output, relay or
analog input/output)
NB!
When restarting after an alarm 38-45, the VLT fre-
quency converter will display an alarm 37. In param-
eter 615 the actual alarm code can be read.
ALARM 50: AMT not possible
One of the following three possibilities can occur:
-
The calculated R
S
value falls outside permitted limits.
-
The motor current in at least one of the motor phases is too low.
-
The motor in use is probably too small for AMT calculations to
be performed.
ALARM 51: AMT Fault re. nameplate data
There is inconsistency between the registered motor data. Check the
motor data for the relevant setup.
ALARM 54: AMT incorrect motor
AMT cannot be performed on the motor being used.
ALARM 55: AMT timeout
Calculations are taking too long, possibly due to noise on the motor ca-
bles.
ALARM 56: AMT warning during AMT
A frequency converter warning is given while AMT is being performed.
WARNING 99: Locked
See parameter 18.
4.1.3 Warning Words, Extended Status Words and Alarm Words
Warning words, status words and alarm words appear in the display in
Hex format. If there are several warnings, status words or alarms, a total
of all the warnings, status words or alarms will be displayed. Warning
words, status words and alarm words can also be read out using the serial
bus in parameters 540, 541 and 538 respectively.
Bit (Hex)
Warning words
000008 HPFB bus timeout
000010 Standard bus timeout
000040 Current limit
000080 Motor thermistor
000100 Motor overload
000200 Inverter overload
000400 Undervolt
000800 Overvolt
001000 Voltage warning low
002000 Voltage warning high
004000 Phase loss
010000 Live zero error
400000 Out of frequency range
800000 Profibus communication fault
40000000 Switch mode warning
80000000 Heat sink temperature high
Bit (Hex)
Extended status words
000001 Ramping
000002 AMT running
000004 Start forw./reverse
000008 Slow down
000010 Catch-up
000020 Feedback high
000040 Feedback low
000080 Output current high
000100 Output current low
000200 Output frequency high
000400 Output frequency low
002000 Braking
008000 Out of frequency range
Bit (Hex)
Alarm words
000002 Triplock
000004 AMT tuning fail
000040 HPFP bus timeout
000080 Standard bus timeout
000100 Curr. short circuit
000200 Switch mode fault
000400 Earth fault
000800 Overcurrent
002000 Motor thermistor
004000 Motor overload
008000 Inverter overload
010000 Undervolt
020000 Overvolt
040000 Phase loss
080000 Live zero error
100000 Heat sink temperature too high
2000000 Profibus communication fault
8000000 Inrush fault
10000000 Internal fault
VLT® Decentral FCD
4 All about FCD 300
MG.04.B8.02 - VLT is a registered Danfoss trademark
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4
Summary of Contents for VLT Decentral FCD 300
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