FC 300 Operating Instructions
Troubleshooting
ALARM 31
Motor phase V missing:
Motor phase V between the frequency converter
and the motor is missing.
Turn off the frequency converter and check motor
phase V.
ALARM 32
Motor phase W missing:
Motor phase W between the frequency converter
and the motor is missing.
Turn off the frequency converter and check motor
phase W.
ALARM: 33
Inrush fault:
Too many powerups have occured within a short
time period. See the chapter
General Specifications
for the allowed number of powerups 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
Warning speed low
(par. 4-52) or
Warning speed high
(par. 4-53). If the frequency
converter is in
Process control, closed loop
(par.
1-00), the warning is active in the display. If the
frequency converter is not in this mode bit 008000
Out of
frequency range
in extended status word is
active but there is no warning in the display.
WARNING 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 motor 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 big for the AMA to be carried out.
ALARM 55
AMA par. out of range:
The par. values found from the motor are outside
acceptable range.
ALARM 56
AMA interrupted by user:
The AMA has been interrupted by the user.
ALARM 57
AMA timeout:
Try to start the AMA again a number of times, until
the AMA is carried out. Please note that repeated
runs may heat the motor to a level where the
resistance Rs and Rr are increased. In most cases,
however, this is not critical.
ALARM 58
AMA internal fault:
Contact your Danfoss supplier.
WARNING 59
Current limit:
Contact your Danfoss supplier.
WARNING 61
Encoder loss:
Contact your Danfoss supplier.
WARNING 62
Output Frequency at Maximum Limit:
The output frequency is higher than the value set
in par. 4-19
ALARM 63
Mechanical Brake Low:
The actual motor current has not exceeded the
“release brake” current within the “Start delay” time
window.
57
MG.33.A2.02 - VLT is a registered Danfoss trademark
