Hi, i have KEB inverter type F4C on my CNC machine... it shows the message L5 (or LS i am not sure about the symbol). The machine showing motor problem and inerter problem. Please advise me on m y ema

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I would guess that this is off of a Rieter machine (C51 Carding Machine). They would be your best source of information.

Verify that the unit is properly programmed and that the control wires are correct.

if the display says LS, it means you are missing the speed and direction command. Via the keypad, provide the direction and then the speed.

The F4-F is a closed loop vector inverter with feedback loop, F4-C is an open loop inverter.

Different functionality.

Best option would be to contact manufacture of the machine that the KEB Combivert is installed in for assistance. This way you will be sure to operate the system within the design specifications of the machine.

Easiest way to program the KEB inverters is with the COMBIVIS 5 software. This can be downloaded from the KEB web site. http://www.keb.de/en/service-downloads/downloads.html?tx_damdlbycat_pi1%5Bcat%5D%5B2021%5D=2021&tx_damdlbycat_pi1%5Bshowgroup%5D=4418&tx_damdlbycat_pi1%5Bdocutype%5D%5B6%5D=6&type=767

If using bus communications (Can, ProFi, Mod, ext), there may be a communications command (Software signal) that is not being provided. Hardware and software enable signal required to obtain LS.

Possible that the terminal on the control card is bad due to miss connection or signals outside of the rated value.

Run the motor with no load to see if it functions with no load.
If the system functions with no load, you may still need to increase your acceleration time to reduce the current demand.

What is the part# / serial# of the inverter in question?

Via Combivis, write a value of -4 to Fr.01. This will set all parameters back to the factory default values.

Then download your backup parameter file.

i have a prblem in the F5 keb combivert it's show Error
E.OC & E.puci & E.Puch could you please advice us with the proper solution
thanks