Which products are affected?
9300 vector 0.37…90 kW SW V2.1
What happens?
When exceeding the overvoltage threshold, the drive controller inhibits the inverter through IMP inhibit for self-protection purposes. Error code 2020 (OU warning) is wrongly indicated under C0168/x. This does not match with the documentation. Error number 1020 (OU message) should have been indicated instead.
When does the problem occur?
The DC-bus voltage exceeds the overvoltage threshold (OU) due to operation in generator mode. The error number cannot be interpreted correctly when being enquired via a communication module since it is not included in the documentation.
Possible diagnostics?
See response under 'What happens?'
Short-term measures/recommendations?
If the error number is evaluated or displayed, the code 2020 is to be equated with the OU message.
Evaluation:
Display error which does not affect the drive performance.
