Danfoss VLT 2800 Design Manual page 141

All about VLT 2800
ALARM 35: Inrush fault
This alarm occurs when the adjustable frequency drive 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 adjustable
frequency drive emits a warning, and the motor continues
to run unchanged. If the temperature continues to rise, the
switch frequency is reduced automatically. See
chapter 5.1.9 Temperature-Dependent Switching Frequency
for further details.
If the temperature inside the power module rises above
92-100 °C (depending on the unit), the adjustable
frequency drive cuts out. The temperature fault cannot be
reset until the temperature has dropped below 70 °C. The
tolerance is ±5 °C. Causes for overtemperature:
•
The ambient temperature too high.
•
Motor cables are too long.
•
Too high mains voltage.
ALARM 37-45: Internal fault
If one of these failures occurs, 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.
Without brake
VLT 2800 1/3 x 200-240 V
[V DC]
Undervoltage 215
Voltage warning low 230
Voltage warning high 385
Overvoltage 410
Table 5.9 Alarm/Warning Limits
The voltages stated are the intermediate circuit voltage of the adjustable frequency drive with a tolerance of ±5 %. The
corresponding line voltage is the intermediate circuit voltage divided by 1.35.
MG27E402
Design Guide
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).
NOTICE
When restarting after an alarm 38-45, the adjustable
frequency drive displays an alarm 37. In parameter 615
Fault log: Error code, the actual alarm code can be read.
ALARM 50: AMT not possible
One of the following three possibilities can occur:
•
•
•
ALARM 51: AMT Fault regarding nameplate data
There is inconsistency between the registered motor data.
Check the motor data for the relevant set-up.
ALARM 52: AMT missing motor phase
The AMT function has detected a missing motor phase.
ALARM 55: AMT time-out
Calculations are taking too long, possibly due to noise on
the motor cables.
ALARM 56: AMT warning during AMT
A adjustable frequency drive warning is given while AMT is
being performed.
WARNING 99: Locked
See parameter 18.
With brake
1/3 x 200-240 V
[V DC]
215
230
400
410
Danfoss A/S © Rev. May/2014 All rights reserved.
The calculated R value is outside permitted
S
limits.
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.
Without brake With brake
3x380-480 V 3x380-480 V
[V DC] [V DC]
410 410
440 440
765 800
820 820
5 5
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