Danfoss VLT AutomationDrive FC 301 Programming Manual page 846

Programming Guide | VLT® AutomationDrive FC 301/FC 302
Troubleshooting
Check the fuses to the drive and mains supply to the unit.
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ALARM 37, Phase Imbalance
Cause
There is a current imbalance between the power units.
ALARM 38, Internal Fault
Cause
When an internal fault occurs, a code number is shown.
Table 88: Internal Fault List
Fault number Cause
0 The serial port cannot be initialized.
256–258 The power EEPROM data is defective or too old.
512–519 Internal fault.
783 Parameter value outside of the minimum/maxi-
mum limits.
1024–1284 Internal fault.
1299 The option software in slot A is too old.
1300 The option software in slot B is too old.
1302 The option software in slot C1 is too old.
1315 The option software in slot A is not sup-
ported/allowed.
1316 The option software in slot B is not sup-
ported/allowed.
1318 The option software in slot C1 is not sup-
ported/allowed.
1379–2819 Internal fault.
1792 Hardware reset of digital signal processor.
1793 Motor-derived parameters not transferred cor-
rectly to the digital signal processor.
1794 Power data not transferred correctly at power-
up to the digital signal processor.
1795 The digital signal processor has received too
many unknown SPI telegrams. The AC drive also
uses this fault code if the MCO does not power
up correctly.
1796 RAM copy error.
846 | © 2024.09
Solution
Contact the supplier or service department.
Replace the power card.
Contact the supplier or service department.
Adjust the parameter value to match the limits.
Contact the supplier or service department.
Upgrade the software in the drive to the latest version.
Upgrade the software in the drive to the latest version.
Upgrade the software in the drive to the latest version.
The software version of the option or the fieldbus variant is not
compatible with the drive software.
The software version of the option or the fieldbus variant is not
compatible with the drive software.
The software version of the option or the fieldbus variant is not
compatible with the drive software.
Contact the supplier or service department.
Check for poor EMC protection and improper grounding.
Troubleshooting
AU275636650261en-003201 / 130R0334