Danfoss VT2800 Series Design Manual page 143

WARNING/ALARM 34: HPFB communication fault
Communication fault only occurs in Fieldbus
versions. Regarding alarmtype, please see
parameter 953 in fieldbus literature.
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 temperature inside the power module
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 temperature inside the power module rises
above 92 - 100 °C (depending on the unit) the
frequency converter will cut out. The temperature
fault cannot be reset until the temperature 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
If one of these failures occurs, please contact Danfoss.
Alarm 37, internal fault number 0: Communication
fault between control card and BMC.
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/warning limits:
Without brake
VLT 2800 1 / 3 x 200 - 240 V
[VDC]
Undervoltage 215
Voltage warning low 230
Voltage warning high 385
Overvoltage 410
The voltages stated are the intermediate circuit
voltage of the frequency converter with a tolerance
MG.28.E9.02 - VLT is a registered Danfoss trademark
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 BMC.
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 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
- The motor current in at least one of the
motor phases is too low.
- The motor in use is too small for AMT
calculations to be performed.
ALARM 51: AMT Fault regarding nameplate data
There is inconsistency between the registered motor
data. Check the motor data for the relevant setup.
ALARM 52: AMT missing motor phase
The AMT function has detected a missing motor phase.
ALARM 55: AMT timeout
Calculations are taking too long, possibly due
to noise on the motor cables.
ALARM 56: AMT warning during AMT
A frequency converter warning is gi v en while
AMT is being performed.
WARNING 99: Locked
See parameter 18.
With brake Without brake
1 / 3 x 200 - 240 V 3 x 380 - 480 V
[VDC] [VDC]
215 410
230 440
400 765
410 820
®
VLT 2800 Series
value falls outside permitted limits.
S
With brake
3 x 380 - 480 V
[VDC]
410
440
800
820
143