Technical data

VLT
®
2800 Series
All about VLT
2800
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 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
S
value falls outside permitted limits.
- The motor current in at least one of the
motorphasesistoolow.
- 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 given while
AMT is being performed.
WARNING 99: Locked
See parameter 18.
Alarm/warning limits:
Without brake With brake Without brake With brake
VLT 2800 1 / 3 x 200 - 240 V
[VDC]
1 / 3 x 200 - 240 V
[VDC]
3 x 380 - 480 V
[VDC]
3 x 380 - 480 V
[VDC]
Undervoltage 215 215 410 410
Voltage warning low 230 230 440 440
Voltage warning high 385 400 765 800
Overvoltage 410 410 820 820
The voltages stated are the intermediate circuit
voltage of the frequency converter with a tolerance
of ± 5 %. The corresponding line voltage is the
intermediate circuit voltage divided by 1,35.
MG.28.A9.02 - VLT is a registered Danfoss trademark
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