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My KEB drive shows alarm "E.nOH" or "E.OH" or E.OH2, what does it mean?? How I will solve it. My motor and drive temperature is still normal but drive shows these alarm.

Posted by Md.Nurul Islam on


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Cindy Wells

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These are all messages that follow overheating. E.nOH indicates that the heat sink has returned to the normal temperature range and the unit can be reset. E. OH indicates that the power module is over-temperature. This could be caused by insufficient air flow at the heat sink. That is caused by dust/dirt. The ventilator could be clogged or the ambient temperature is too high. E. OH2 indicates that the motor protection relay was tripped. Check for dust/dirt and clean any filters. Make sure that nothing is blocking the air flow around the unit.

KEB uses these error mesages on the CombiVert F6, .

I hope this helps.

Cindy Wells

Posted on Jun 01, 2019


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  • 120 Answers

SOURCE: Fcon in keb f5

Forward CONtinues

System is at the commanded speed in the forward direction.

Posted on Apr 01, 2014


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1 Answer

What does OL2 fault in KEB drive indicate?

Too much current is being required with the motor shaft not rotating. This is most likely a parameter adjustment issue with the motor data, torque limits and protective functions.

Possible motor issue as well.

Sep 29, 2015 | Inverter KEB COMBIVERT F5

2 Answers

Always showing alarm EOC,EOP

The system that you described is a closed-loop system. The inverter tells the motor what to do and the encoder send information back to the inverter to verify the operations.

With out knowing part# and serial number of the unit in question, I do not know exactly which inverter you are having problems with.

With E.OC error, there is a lot of current demand on the inverter. This could mean a short in the motor, motor leads, connections or inside of the inverter. This could also be caused by the encoder feedback loop being defective. If the inverter tells the motor to run at 1000rpm and the feedback tells the inverter it is only running at 5rpm, the inverter will send out more current to get the motor up to speed.

Since you are getting multiple errors, there could be other internal problems with the inverter especially if the unit is old and contaminated internally.

Apr 01, 2015 | Inverter KEB COMBIVERT F5

1 Answer

We have KEB Combivert F5 drive Matno. 15F5C1E-350A Version. drive is installed in machine and is not working right now.i want to run the drive in Manual mode to test it.

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.

Mar 07, 2015 | Inverter KEB COMBIVERT F5

1 Answer

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

1 Answer

Fcon in keb f5

Forward CONtinues

System is at the commanded speed in the forward direction.

Apr 01, 2014 | Inverter KEB COMBIVERT F5

1 Answer

Eoc alam

E.OC is an over current error.

The inverter is sensing a short on the U/V/W terminals. This could be a shorted motor, motor leads and an internal short in the inverter.

Disconnect the motor leads from the inverter, and run the inverter as you normally would.

If the E.OC error does not occur the short is external of the inverter.
If the E.OC occurs, then the short is internal to the inverter.

Nov 26, 2013 | Inverter KEB COMBIVERT F5

1 Answer

Sir have a nice day, i have problem about KEB combivert F5 28kva running but after 3-5 minutes have a display error E.OH means over heating blower fan is working condition,pls what the solution of this...

Verify that the cooling fans are operational and that the heatsink is actually hot to the touch.

If the heatsink is not hot to the touch there is perhaps a problem with the temp. sensors in the inverter.

Oct 09, 2013 | Inverter KEB COMBIVERT F5

1 Answer

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

LS means Low Speed. The inverter is enabled and is waiting for a command.

Check your speed and direction signals at the inverter to verify if they are active.

Nov 16, 2011 | Inverter KEB COMBIVERT F5

3 Answers

What does the error EdoH mean

Over temperature signal from motor temperature sensor. Error can only be reset once the display reads E.nOH. Causes:
*Resistor at terminal T1:T2 > 1650 ohms * Motor overloaded (getting hot) *Temperature sensor defective

Aug 18, 2009 | Inverter KEB COMBIVERT F5

1 Answer

I just moved into a home with a kenmore chest freezer. This is a real dumb question, but which symbol means on. Should the circle be showing for "on" or should the line be showing for "on"?

Some freezer models feature a temperature
monitor that provides an audible
alarm. The temperature monitor alarm is
located near the temperature control

The alarm sounds if the temperature in
the freezer rises 10° F (12° C) or more
above normal for selected setting. Alarm
may sound if temperature control dial is
turned to a much colder setting or if a
large amount of unfrozen food is added at
one time. Alarm is controlled by a three
position switch

0 = OFF prevents alarm from sounding
when freezer is warm, such as during
initial start-up or defrosting.
• ✓ = TEST sounds alarm regardless of
temperature. Alarm system should be
tested at least once a month.
1 = ON is proper setting for normal
freezer use. Return switch to 1 after

Jul 07, 2009 | Kenmore Freezers

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