VLT
®
FCD Series
ALARM 16: Short-circuit
There is a short-circuit on the motor terminals or
in the motor. Disconnect the mains supply to the
frequency converter and remove the short-circuit.
WARNING/ALARM 17: Serial commu-
nication timeout
There is no serial communication to the frequency
converter. The warning will only be active when 514
Bus timeout function
is set to a value other than OFF. If
parameter 514
Bus timeout function
is set to
Stop and
trip
[5], it will first give a warning and then ramp down
and trip out accompanied by an alarm. Parameter
513
Bus timeout
can if required be increased
WARNING/ALARM 18: HPFB bus timeout
There is no serial communication to the frequency
converter
’
s communication option card. This warning
will only be active when parameter 804
Bus timeout
function
is set to a value other than OFF. If parameter
804
Bus timeout function
is set to
Stop and trip
, it
will first give a warning and then ramp down and
trip out accompanied by an alarm. Parameter 803
Bus timeout
can if required be increased.
WARNING 33: Out of frequency range
This warning is active if the output frequency has
reached
Output frequency low limit
(parameter 201) or
Output frequency high limit
(parameter 202). If the VLT
frequency converter is in
Process regulation, closed
loop
(parameter 100) the warning will be active in the
display. If the VLT frequency converter is in another
mode than
Process regulation, closed loop
, bit 008000
Out of frequency range
in extended status word will be
active, but there will not be a warning in the display.
WARNING/ALARM 34: HPFB communication fault
Communication fault only occurs in Profibus versions.
ALARM 35: Inrush fault
This alarm occurs when the frequency converter
has been connected to the mains supply too
many times within 1 minute.
WARNING/ALARM 36: Overtemperature
If the internal temperature rises above 75 - 85 °C
(depending on the device) the frequency converter
will emit a warning, and the motor will continue to
run unchanged. If the temperature continues to rise,
the switch frequency is reduced automatically. See
Temperature-dependent switching frequency
.
If the internal temperature of the heatsink rises above
92 - 100 °C (depending on the unit) the frequency
converter will cut out. The temperature fault cannot
be reset until the temperature of the internal heatsink
has dropped to below 70 °C. The tolerance is ± 5 °C.
The temperature can be caused by the following:
-
The ambient temperature too high.
-
Motor cable too long.
-
Too high mains voltage.
ALARM 37–45: Internal fault
Internal faults 0–8 will be indicated in LED
’
s Alarm,
Warning, Bus, Status as a flashing code.
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 frequency converter will display an
alarm 37. In parameter 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 cables.
MG.04.B7.02 - VLT is a registered Danfoss trademark
104