List Of Warnings And Alarms - Danfoss VLT Midi Drive FC 280 Operating Instructions Manual

Maintenance, Diagnostics, a...

8.4 List of Warnings and Alarms

An (X) marked in Table 8.1 indicates that the warning or alarm has occurred.
No. Description
2 Live zero error
3 No motor
4 1)
Mains phase loss
7
DC overvoltage 1)
8 1)
DC undervoltage
9 Inverter overloaded
10 Motor ETR overtemperature
Motor thermistor overtem-
11
perature
12 Torque limit
13 Overcurrent
14 Ground fault
16 Short circuit
17 Control word timeout
25 Brake resistor short-circuited
26 Brake overload
Brake IGBT/Brake chopper short-
27
circuited
28 Brake check
30 U phase loss
31 V phase loss
32 W phase loss
34 Fieldbus fault
35 Option fault
36 Mains failure
38 Internal fault
40 Overload T27
46 Gate drive voltage fault
47 24 V supply low
51 AMA check U and I
nom nom
52 AMA low I
nom
MG07A102
Operating Instructions
Warning Alarm Trip lock
X X –
X – –
X X X
X X –
X X –
X X –
X X –
X X –
X X –
X X X
– X X
– X X
X X
– X X
X X –
– X X
– X
– X X
– X X
– X X
X X –
– X –
X X –
– X X
X – –
X X
X X X
– X –
– X –
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Cause
Signal on terminal 53 or 54 is less than 50% of value set
in parameter 6-10 Terminal 53 Low Voltage,
parameter 6-20 Terminal 54 Low Voltage, and
parameter 6-22 Terminal 54 Low Current.
No motor has been connected to the output of the
frequency converter.
Missing phase on the supply side, or the voltage
imbalance is too high. Check the supply voltage.
DC-link voltage exceeds limit.
DC-link voltage drops below the voltage warning low
limit.
More than 100% load for too long.
Motor is too hot due to more than 100% load for too
long.
Thermistor or thermistor connection is disconnected, or
the motor is too hot.
Torque exceeds value set in either parameter 4-16 Torque
Limit Motor Mode or parameter 4-17 Torque Limit Generator
Mode.
Inverter peak current limit is exceeded. If this alarm
occurs on power-up, check whether power cables are
mistakenly connected to the motor terminals.
Discharge from output phases to ground.
Short circuit in motor or on motor terminals.
No communication to frequency converter.
Brake resistor is short-circuited, thus the brake function is
disconnected.
The power transmitted to the brake resistor over the last
120 s exceeds the limit. Possible corrections: Decrease
brake energy via lower speed or longer ramp time.
Brake transistor is short-circuited, thus brake function is
disconnected.
Brake resistor is not connected/working.
Motor phase U is missing. Check the phase.
Motor phase V is missing. Check the phase.
Motor phase W is missing. Check the phase.
PROFIBUS communication issues have occurred.
Fieldbus detects internal faults.
This warning/alarm is only active if the supply voltage to
the frequency converter is less than the value set in
parameter 14-11 Mains Voltage at Mains Fault, and
parameter 14-10 Mains Failure is NOT set to [0] No
Function.
Contact the local Danfoss supplier.
Check the load connected to terminal 27 or remove
short-circuit connection.
–
24 V DC may be overloaded.
Wrong setting for motor voltage and/or motor current.
Motor current is too low. Check the settings.
8 8
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