Danfoss FC 301 - 3.3.4. Fuses

ALARM 14, Earth (ground) fault
There is current from the output phase-to-ground, either in
the cable between the frequency converter and the motor,
or in the motor itself. The current transducers detect the
ground fault by measuring current going out from the
frequency converter and current going into the frequency
converter from the motor. Ground fault is issued if the
deviation of the 2 currents is too large. The current going
out of the frequency converter must be the same as the
current going into the frequency converter.
Troubleshooting
•
Remove power to the frequency converter and
repair the ground fault.
•
Check for ground faults in the motor by
measuring the resistance to ground of the motor
cables and the motor with a megohmmeter.
•
Reset any potential individual oset in the 3
current transducers in the frequency converter.
Perform the manual initialization or perform a
complete AMA. This method is most relevant
after changing the power card.
ALARM 15, Hardware mismatch
A tted option is not operational with the present control
card hardware or software.
Record the value of the following parameters and contact
Danfoss.
•
Parameter 15-40 FC Type.
•
Parameter 15-41 Power Section.
•
Parameter 15-42 Voltage.
•
Parameter 15-43 Software Version.
•
Parameter 15-45 Actual Typecode String.
•
Parameter 15-49 SW ID Control Card.
•
Parameter 15-50 SW ID Power Card.
•
Parameter 15-60 Option Mounted.
•
Parameter 15-61 Option SW Version (for each
option slot).
ALARM 16, Short circuit
There is short-circuiting in the motor or motor wiring.
Troubleshooting
•
Remove the power to the frequency converter
and repair the short circuit.
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to use qualied personnel to install, start up, and
maintain the frequency converter can result in death or
serious injury.
•
Disconnect power before proceeding.
WARNING/ALARM 17, Control word timeout
There is no communication to the frequency converter.
The warning is only active when parameter 8-04 Control
Word Timeout Function is NOT set to [0] O.
If parameter 8-04 Control Word Timeout Function is set to [5]
Stop and trip, a warning appears, and the frequency
converter ramps down to a stop and shows an alarm.
Troubleshooting
•
Check the connections on the serial communi-
cation cable.
•
Increase parameter 8-03 Control Word Timeout
Time.
•
Check the operation of the communication
equipment.
•
Verify that proper EMC installation was
performed.
WARNING/ALARM 20, Temp. input error
The temperature sensor is not connected.
WARNING/ALARM 21, Parameter error
The parameter is out of range. The parameter number is
shown in the display.
Troubleshooting
•
Set the
aected parameter to a valid value.
WARNING/ALARM 22, Hoist mechanical brake
The value of this warning/alarm shows the type of
warning/alarm.
0 = The torque reference was not reached before timeout
(parameter 2-27 Torque Ramp Time).
1 = Expected brake feedback was not received before
timeout (parameter 2-23 Activate Brake Delay,
parameter 2-25 Brake Release Time).
Maintenance, Diagnostics, a... Operating Guide
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