Danfoss VLT AutomationDrive FC 301 Programming Manual page 860

Programming Guide | VLT® AutomationDrive FC 301/FC 302
Indication of the drive module generating the alarm:
1 = Left drive module.
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2 = Second drive module from left.
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3 = Third drive module from left (in 4-module systems).
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4 = Fourth drive module from left (in 4-module systems).
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ALARM 244, Heat Sink Temperature
Cause
The maximum temperature of the heat sink has been exceeded. The temperature fault cannot reset until the temperature drops below
the defined heat sink temperature. The trip and reset points are different, based on the power size. This alarm is equivalent to Alarm 29,
Power module temp.
Troubleshooting
Check for the following:
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a.
Ambient temperature too high.
b. Motor cables too long.
c.
Incorrect airflow clearance above or below the AC drive.
d.
Blocked airflow around the unit.
e. Damaged heat sink fan.
f. Dirty heat sink.
ALARM 245, Heat Sink Sensor
Cause
There is no feedback from the heat sink temperature sensor. This signal form the IGBT thermal sensor is not available on the power card.
This alarm is equivalent to Alarm 39, Heat sink sensor.
The report value in the alarm log indicates which drive module generated the alarm:
1 = Left drive module.
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2 = Second drive module from the left.
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3 = Third drive module from the left (in 4-module systems).
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4 = Fourth drive module from the left (in 4-module systems).
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Troubleshooting
Check the power card.
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Check the gate drive card.
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Check the ribbon cable between the power card and the gate drive card.
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ALARM 246, Power Card Supply
Cause
The supply on the power card is out of range. This alarm is only for multi-drive systems. It is equivalent to Alarm 46, Power card supply.
The report value in the alarm log indicates which drive module generated the alarm:
1 = Left drive module.
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2 = Second drive module from left.
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3 = Third drive module from left (in 4-module systems).
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4 = Fourth drive module from left (in 4-module systems).
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860 | © 2024.09
Troubleshooting
AU275636650261en-003201 / 130R0334