Fault memory
The inverter stores the error message in fault memory P080. The inverter does not save a new fault until the error message has been acknowledged. The local operating panel shows the most recent error. Whenever double faults occur, the value stored in P080 does not correspond to the value displayed on the operating panel. This is an example of what happens with F07 DC link overvoltage followed by F34 Ramp timeout.
The inverter stores the following information when a malfunction occurs:
- Error occurred
- Status of the digital inputs / digital outputs
- Operating state of the inverter
- Inverter state
- Heat sink temperature
- Speed
- Output current
- Active current
- Unit utilization
- DC link voltage