FC 300 Instruction Manual
Troubleshooting
ALARM 29
Drive over temperature:
If the enclosure i s IP 20 or IP 21/TYPE 1, the
cut-out temperature of the heat sink is 203 °F ±9
°F (95 °C ±5 °C). The temperature fault cannot
be reset until the temperature of the heat sink
is below 158 ° F ±9 °F (70 °C ±5 °C).
The fau lt could be:
- Ambient temperature too high
- Too long motor cable
ALARM 30
Motor phase U missing:
Motor phase U b etween the adjustable frequency
driveandthemotorismissing.
Turn off the adjustable frequency drive and
check motor phase U.
ALARM 31
Motor phase V missing:
Motor phase V between the adjustable frequency
driveandthemotorismissing.
Turn off the adjustable frequency drive and
check motor phase V.
ALARM 32
Motor phase W missing:
Motor phase W between the adjustable frequency
driveandthemotorismissing.
Turn off the adjustable frequency drive and
check motor phase W.
ALARM 33
Inrush fault:
Too many power-ups have occurred within a
short time pe riod. 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.
WARNING 35
Out of frequency range:
This warning is active if the output frequency has
reached its W arning speed low (par. 4-52) or
Warning speed high (par. 4-53). If the adjustabl
e
frequency drive is in Process control, closed loop
(par. 1-00), the warning is active in the d isplay. If
theadjustablefrequencydriveisnotinthism
ode, bit
008000 Out of frequency range in extended status
word is active but there is no warning in the display.
ALARM 38
Internal fault:
Contact your Danfoss supplier.
WARNING 47
24 V supply low:
The external 24 V DC backup power supply may be
overloaded, otherwise Contact your Danfoss supplier.
WARNING 48
1.8 V supply low:
Contact your Danfoss supplier.
WARNING 49
Speed limit:
Contact your Danfoss supplier.
ALARM 50
AMA calibration failed:
Contact your Danfoss supplier.
ALARM 51
AMA check Unom and Inom:
The setting of motor voltage, motor current,
and motor power is presumably wrong.
Check the settings.
ALARM 52
AMA low Inom:
The m otor current is too low. Check the settings.
ALARM 53
AMA motor too big:
The motor is too big for the AMA to be carried out.
ALARM 54
AMA motor too small:
The motor is too small for the AMA to be carried out.
ALARM 55
AMA par. out of range:
The par. values found from the motor a re
outside the acceptable range.
ALARM 56
AMA interrupted by user:
The AMA has been i nterrupted by the user.
72
MG.33.A4.22 - VLT is a registered Danfoss trademark
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