Danfoss VLT 2800 Series, Operating Instructions Manual

Page: 81 / 103

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 fre-
quency converter will emit a warning, and the motor
will continue to run unchanged. If the temperature con-
tinues to rise, the switch frequency is reduced auto-
matically. See
Temperature-dependent switching
frequency .
If the temperature inside the power module rises
above 92 - 100 °C (depending on the unit) the fre-
quency 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 EE-
PROM.
Alarm 42, internal fault number 5: Fault in motor pa-
rameter 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 in-
put/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 permit-
ted limits.
- The motor current in at least one of the motor
phases is too low.
-
The motor in use is too small for AMT calcu-
lations 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 volt-
age of the frequency converter with a tolerance of ± 5 %. The corresponding line voltage is the intermediate
circuit voltage divided by 1,35.
VLT
®
2800 Series
80 MG.27.A2.02 - VLT
®
is a registered Danfoss trademark