Fault codeA00590
Encoder feedback loss warning occurs when encoder signal is lost and inverter may switch to sensorless vector control, with specific conditions for configuration errors. The manual's first action is: “Check also alarm value r0947.”
- Model
- Siemens CU240S
- Display shows
- Encoder feedback loss warning (A00590)
- Type
- Fault code
- Source
- Manual p. 394
What A00590 means
Encoder feedback loss warning p. 394
Common causes
- Signal from Encoder lost; Inverter might have switched to sensorless vector control. p. 394
- r0949 = 0: Encoder signal lost. p. 394
- r0949 = 5: Encoder not configured in P0400, but required for sensed control (P1300 = 21 or 23). p. 394
What to do
- Check also alarm value r0947. p. 394
- Stop inverter and then • Check encoder fitted. If encoder fitted and r0949 = 5, select encoder type via P0400. • If encoder fitted and r0949 = 8, check connections between encoder module and inverter. • If encoder not fitted and r0949 = 5, select SLVC mode (P1300 = 20 or 22). • If encoder not fitted and r0949 = 8, set P0400 = 0. • If encoder fitted, check correct encoder selected (check encoder setup in P0400). • Check connections between encoder and inverter. • Check that encoder not faulty (select P1300 = 0, run at fixed speed, check encoder feedback signal in r0061). • Increase encoder loss threshold in P0492. p. 394
If A00590 is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Siemens service.
This page summarises what the manufacturer’s manual says about A00590; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.