Danfoss FC 300 Series User Manual

The alarm words, warning words and extended status words
can be read out via serial bus or optional serial communi-
cation bus for diagnosis. See also 16-94 Ext. Status Word.
WARNING 1, 10 Volts low:
The 10 V voltage from terminal 50 on the control card is
below 10 V.
Remove some of the load from terminal 50, as the 10 V
supply is overloaded. Max. 15 mA or minimum 590 Ω.
WARNING/ALARM 2, Live zero error:
The signal on terminal 53 or 54 is less than 50% of the value
set in 6-10 Terminal 53 Low Voltage, 6-12 Terminal 53 Low
Current, 6-20 Terminal 54 Low Voltage, or 6-22 Terminal 54 Low
Current respectively.
WARNING/ALARM 3, No motor:
No motor has been connected to the output of the
adjustable frequency drive.
WARNING/ALARM 4, Mains phase loss:
A phase is missing on the supply side, or the line voltage
imbalance is too high.
This message also appears in case of a fault in the input
rectifier on the adjustable frequency drive.
Check the supply voltage and supply currents to the
adjustable frequency drive.
WARNING 5, DC link voltage high:
The intermediate circuit voltage (DC) is higher than the high
voltage warning limit. The limit is dependent on the drive
voltage rating. The adjustable frequency drive is still active.
WARNING 6, DC link voltage low:
The intermediate circuit voltage (DC) is lower than the low
voltage warning limit. The limit is dependent on the drive
voltage rating. The adjustable frequency drive is still active.
WARNING/ALARM 7, DC overvoltage:
If the intermediate circuit voltage exceeds the limit, the
adjustable frequency drive trips after a time.
Troubleshooting:
Connect a brake resistor
Extend the ramp time
Change the ramp type
Activate functions in 2-10 Brake Function
Increase 14-26 Trip Delay at Inverter Fault
WARNING/ALARM 8, DC undervoltage:
If the intermediate circuit voltage (DC) drops below the
undervoltage limit, the adjustable frequency drive checks if a
24 V backup supply is connected. If no 24 V backup supply is
connected, the adjustable frequency drive trips after a fixed
time delay. The time delay varies with unit size.
Troubleshooting:
Make sure that the supply voltage matches the
adjustable frequency drive voltage.
Perform Input voltage test
Perform soft charge and rectifier circuit test
WARNING/ALARM 9, Inverter overloaded:
The adjustable frequency drive is about to cut out because of
an overload (current too high for too long). The counter for
electronic, thermal inverter protection gives a warning at
98% and trips at 100%, while giving an alarm. You
cannot
reset the adjustable frequency drive until the counter is
below 90%.
The fault is that the adjustable frequency drive has been
overloaded by more than 100% for too long.
WARNING/ALARM 10, Motor ETR overtemperature:
According to the electronic thermal protection (ETR), the
motor is too hot. You can choose if you want the adjustable
frequency drive to give a warning or an alarm when the
counter reaches 100% in 1-90 Motor Thermal Protection. The
fault is that the motor is overloaded by more than 100% for
too long. Make sure that the motor 1-24 Motor Current is set
correctly.
WARNING/ALARM 11, Thermistor overload:
The thermistor or the thermistor connection is disconnected.
You can choose if you want the adjustable frequency drive to
give a warning or an alarm when the counter reaches 100%
in 1-90 Motor Thermal Protection. Make sure that the
thermistor is connected correctly between terminal 53 or 54
(analog voltage input) and terminal 50 (+10 V supply), or
between terminal 18 or 19 (digital input PNP only) and
terminal 50. If aKTY sensoris used, check for correct
connection between terminal 54 and 55.
WARNING/ALARM 12, Torque limit:
The torque is higher than the value in 4-16 Torque Limit
Motor Mode (in motor operation) or the torque is higher than
the value in 4-17 Torque Limit Generator Mode (in
regenerative operation).
WARNING/ALARM 13, Overcurrent:
The inverter peak current limit (approx. 200% of the rated
current) is exceeded. The warning will last approx. 8‒12 sec.,
then the adjustable frequency drive trips and issues an
alarm. Turn off the adjustable frequency drive and check if
the motor shaft can be turned and if the motor size matches
the adjustable frequency drive.
If extended mechanical brake control is selected, trip can be
reset externally.
ALARM 14, Ground fault:
There is a discharge from the output phases to ground,
either in the cable between the adjustable frequency drive
and the motor or in the motor itself.
Turn off the adjustable frequency drive and remove the
ground fault.
Troubleshooting FC 300 Programming Guide
MG.33.MA.22 - VLT
®
is a registered Danfoss trademark 5-5
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Danfoss FC 300 Series Specifications

General

Brand	Danfoss
Model	FC 300 Series
Category	DC Drives
Language	English