[HolmQ]

Hi everyone,

I am a guy in Sweden that is converting a Harley Davidson - Street rod. I converted a Cagiva Mito 125cc 5 years ago and think it would be fun to do something bigger now.

I am using two Kia Soul battery modules - 108 V nominal and Curtis 1238 & AC-20
The problem I have is that I get fault code 24 - "Overvoltage cutback" from the controller.

Cant understand why. Have gone through all parameters in the Curtis software and changed voltage, throttle and so on...

Does anyone have any input on what to do?

Thanks!
// Marcus

 

[major]

Hi everyone,

I am a guy in Sweden that is converting a Harley Davidson - Street rod. I converted a Cagiva Mito 125cc 5 years ago and think it would be fun to do something bigger now.

I am using two Kia Soul battery modules - 108 V nominal and Curtis 1238 & AC-20
The problem I have is that I get fault code 24 - "Overvoltage cutback" from the controller.

Cant understand why. Have gone through all parameters in the Curtis software and changed voltage, throttle and so on...

Does anyone have any input on what to do?

Thanks!
// Marcus

Hi Marcus,

What is the actual measured voltage when the fault occurs? How does that compare with the maximum voltage that the controller will tolerate?

Regards,

major

 

[HolmQ]

Hi Major,
I get the fault code everytime i start the system. The controller is made for 96V and should work up to 120V.

Pin 1-KSI has 108V.
Capacitor Bank V is 3V.

Edit: The controller also shows fault code 53 (does not pop up in the diagnostics tab...) - OEM Faults.

Regards
Marcus

 

[major]

Hi Major,
I get the fault code everytime i start the system. The controller is made for 96V and should work up to 120V.

Pin 1-KSI has 108V.
Capacitor Bank V is 3V.

Edit: The controller also shows fault code 53 (does not pop up in the diagnostics tab...) - OEM Faults.

Regards
Marcus

First you say 108 is nominal. Then you say pin-1 has 108 V. What is the actual voltmeter reading of the source (battery) voltage with decimal, ###.##?

 

[major]

Please give the complete 8 digit model number of the Curtis.
Thanks.

 

[HolmQ]

Took some pictures to eliminate the misunderstanding. Hope they answer your questions. The voltmeter is measured on battery + & -.

Regards
Marcus

 

[HolmQ]

Does anyone have a VCL for Curtis controllers that I could use?

That works with Curtis 1238 and HPEV AC-20 @ 96v.
The controller has OS10 or OS12.

Thank in advanced!

Regards
Marcus

 

[HolmQ]

Here is two pictures of the work so far. The frame i 3d scanned.

/Marcus