Danfoss VLT AutomationDrive FC 301 Programming Manual page 287

Troubleshooting
ALARM 15, Hardware mismatch
A fitted 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.
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Parameter 15-41 Power Section.
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Parameter 15-42 Voltage.
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Parameter 15-43 Software Version.
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Parameter 15-45 Actual Typecode String.
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Parameter 15-49 SW ID Control Card.
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Parameter 15-50 SW ID Power Card.
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Parameter 15-60 Option Mounted.
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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 qualified 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] Off.
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.
MG33MO02
Programming Guide
WARNING/ALARM 21, Parameter error
The parameter is out of range. The parameter number is
shown in the display.
Troubleshooting
•
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).
WARNING 23, Internal fan fault
The fan warning function is a protective function that
checks if the fan is running/mounted. The fan warning can
be disabled in parameter 14-53 Fan Monitor ([0] Disabled).
For frequency converters with DC fans, a feedback sensor
is mounted in the fan. If the fan is commanded to run and
there is no feedback from the sensor, this alarm appears.
For frequency converters with AC fans, the voltage to the
fan is monitored.
Troubleshooting
•
•
•
WARNING 24, External fan fault
The fan warning function is a protective function that
checks if the fan is running/mounted. The fan warning can
be disabled in parameter 14-53 Fan Monitor ([0] Disabled).
For frequency converters with DC fans, a feedback sensor
is mounted in the fan. If the fan is commanded to run and
there is no feedback from the sensor, this alarm appears.
For frequency converters with AC fans, the voltage to the
fan is monitored.
Troubleshooting
•
•
•
WARNING 25, Brake resistor short circuit
The brake resistor is monitored during operation. If a short
circuit occurs, the brake function is disabled and the
warning appears. The frequency converter is still
operational, but without the brake function.
Troubleshooting
•
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Set the affected parameter to a valid value.
Check for proper fan operation.
Cycle power to the frequency converter and
check that the fan operates briefly at start-up.
Check the sensors on the control card.
Check for proper fan operation.
Cycle power to the frequency converter and
check that the fan operates briefly at start-up.
Check the sensors on the heat sink.
Remove the power to the frequency converter
and replace the brake resistor (refer to
parameter 2-15 Brake Check).
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