openinverter forum

Hello
Summary questions.
1. Is pre-charge really fast, like 1sec?
2. Should the pre-charge relay stay on after pre-charge is complete?
3. Why am I stuck in opMode Charge?

I am working on getting a new install of the zombiverter working. I have upgrated to version 2.20a.
My system is a gen2 leaf(full stack), 40kwh battery, isa current shunt.

When I power up the system up I have no errors and it is in Charging mode. It makes me a bit nervous as it quickly engages all the HV relays. I think the pre-charge is working ok. If I disconnect my resistor it then pre-charge fails. It looks like the pre-charge contactor remains on after the pre-charge is complete, hopefully that is normal.

My next step is to turn on the ignition via power to pin 15(ignition). Nothing changes on the web interface.
Next I apply 12V to pin 52(the start) button. again no change in the web interface.

I have looked at spot values and see my voltage udc is at 390 and INVudc 390
At least some part of the can bus to the controller must be working as the inverter temp is 12 C.
My throttle seems to work as I see pot and pot2 change, dir shows drive.

At this point I am a bit stuck and opted to post here and then go dig into the code.

Does any one have any suggestions?

Thanks
Aaron

alucas wrote: ↑Sat Feb 15, 2025 9:32 pm Should the pre-charge relay stay on after pre-charge is complete?

Yes this is correct.

Share your parameters for feedback.

alucas wrote: ↑Sat Feb 15, 2025 9:32 pm Nothing changes on the web interface.

You need to referesh spot values to see any changes. if you see dir or potnom you need to be in RUN opmode.

alucas wrote: ↑Sat Feb 15, 2025 9:32 pm 3. Why am I stuck in opMode Charge?

need parameters

Hello
Thanks for the quick response.
I read through the code and found out that I had the Param Chgctl was probably the problem It was set to enable. When I changed to disable I am now powering up with opmode=off, UdcBelowUdcSw, last error=none, battery voltage(udc) 4, inverter temp 12.
Note my relays don't turn on now.

This is the state I end up in with version 2.17 and I could never get anything to change which is why I moved to 2.20a.
I am now looking over the code to see how to get out of opmode=off.

I measured the voltage on my wire to pin 15 and its 12V. I might need to open the inverter box and be sure I have the wire to pin correct. I will also get a set of params.
Thanks

I read through the code more and found Param::GetInt(Param::pot) < Param::GetInt(Param::potmin)
after checking my settings I found I needed to increase potmin. However the motor then did this funny low speed pulsing.
After turning off and restarting I realized I had disconnected the control for my High voltage + side. I was running through the precharge resistor. It's now smoked, time to order more parts. All this effort simply because I didn't have potmin set correct. I had simply set it to the min I saw when doing the setup and I should have set it a bit higher.

alucas wrote: ↑Sun Feb 16, 2025 12:08 am I read through the code more and found Param::GetInt(Param::pot) < Param::GetInt(Param::potmin) after checking my settings I found I needed to increase potmin. However the motor then did this funny low speed pulsing.

The low speed pulsing will almost certainly be down to regen being enabled when the drive has no load. Turn regen off completely until the car is on its wheels.

Hello I set regenmax to 0 and the pulsing went away.
I can get it back if I hit the brake light Which probably means I need to set regenbrake to.

It will be a while until I get torque box. I ordered it in Oct but they are having issues.

Thanks
Aaron