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VACON® 3000
Application Guide
8.2.28.5 Fault Code 43, ID 424 - Encoder Fault
Cause
The encoder board is missing.
Troubleshooting
•
Check the encoder connections.
•
Check the encoder and the encoder cable.
•
Check the encoder board.
•
Check the encoder frequency in open-loop mode.
8.2.28.6 Fault Code 43, ID 425 - Encoder Fault
Cause
Encoder speed deviation supervision.
Troubleshooting
•
Check the encoder connections.
•
Check the encoder and the encoder cable.
•
Check the encoder board.
•
Check the encoder frequency in open-loop mode.
•
Check the basic motor parameters.
8.2.28.7 Fault Code 43, ID 426 - Encoder Fault
Cause
•
Encoder pulse count supervision.
•
The estimated encoder pulse count/revolution is different from the value set by the parameter.
Troubleshooting
•
Check the encoder pulse count/revolution value.
•
Check the encoder coupling (gear ratio, friction wheel).
•
Check the basic motor parameters.
8.2.28.8 Fault Code 43, ID 427 - Encoder Fault
Cause
•
The maximum acceleration rate is exceeded.
•
The motor acceleration calculated from the encoder speed is higher than the actual maximum of the application.
Troubleshooting
•
Check the encoder channel connections.
•
Check the encoder board.
•
Check the encoder and the encoder cable.
•
Check the mechanical mounting of the encoder.
•
Check the encoder frequency in open-loop mode.
8.2.29 Fault Code 44 - Device Changed (Different Type)
8.2.29.1 Fault Code 44, ID 431 - Device Changed (Different Type)
Cause
•
There is a new power unit of a different type. Parameters are not available in the settings.
Troubleshooting
•
Reset the fault. The drive reboots after you reset the fault.
•
Set the power unit parameters again.
292 | Danfoss A/S © 2021.09
Fault tracing
AB319735759636en-000101 / DPD01822
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