Question about Inverter KEB COMBIVERT F5

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F5 KEB inverter nop problem

I have a KEB F5 combivert 1.5KW VFd. The problem is that even after connecting the ST terminal the display is showing "nop" when it must be showing "LS", due to which the vfd is not running. I have checked the parameters but still could not find the problem. Please help

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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.

Posted on Apr 01, 2014


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How to save the parameters in KEB F5

Here is how to use the keypad. If a decimal shows up after the value is changed, enter must be pressed to save the value.

Also insure that the inverter is not enabled or in nOP status.


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KEB COMBIVERT F5 - Standard communications connections

Here is an overview of the the items required to communicate with the KEB COMBIVERT F5.

***X4A and X6B connections require special cable from KEB. This is a 24Vdc connection and will damage your PC/inverter if the proper cables are not used.**


on Feb 21, 2014 | Inverter KEB COMBIVERT F5

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I have a KEB combivert F5. The parameter ru 00 shows nop even if i give switching to terminal 16 for control release.Please help.

This may be due to the inverter waiting for an ST signal via buss communications.

What is the part # of the unit in question?

The inverter is recognizing that terminal 16 is going active but still waiting for another command to enable the inverter.

Mar 09, 2015 | Inverter KEB COMBIVERT F5

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Fcon in keb f5

Fcon = forward constant

The inverter is operating at the set speed in the forward direction.

Apr 01, 2014 | Inverter KEB COMBIVERT F5

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Fcon in keb f5

Forward CONtinues

System is at the commanded speed in the forward direction.

Apr 01, 2014 | Inverter KEB COMBIVERT F5

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Nop is showing in the display after connecting the ST connections

Nop = No operations

Provide signal to enable input (ST).

Apr 01, 2014 | Inverter KEB COMBIVERT F5

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Indicate nop

Need to enable the inverter via the ST terminal

Jan 23, 2013 | Inverter KEB COMBIVERT F5

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How to select rotation for one inverter keb f5 with servomotor

By default direction is selected via digital signals to the control terminal strip of most Combivert inverters.

Check your manual for forward and reverse terminal.

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F5 keb inverter problem

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

Mar 10, 2010 | Inverter KEB COMBIVERT F5

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When ion the power display shows nop i want to go in cp parameter but after press func key the figuers comes like aa pp.

Does the display say appl? if so, use the up arrow and go to a value of 200, then pres the enter key. Display should change to cp_on.

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