Which must be the value of Max Voltage Rise which normally would not exceed for my wheelbase SW30?
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@sim-plicity-dev Thank you so much!
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I'll allow myself to join in, my SW20E just got 4,25V of Max Voltage Rise. Configuration tool says it's fine until 5V. Is there anything to worry about? Thanks.
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4.25V while on the higher side is still within the control range for a SW20E. Nothing to worry about. Over 5V, we would start to investigate why.
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@sim-plicity-dev Thank you for clearing that up.
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@Sim-plicity-Dev
Has to bump this thread once again, as I got 5,68 V on my SW20E today.
I got it while driving a car which has suposedly no power steering as it peaked at around 15 Nm.I think it was just some sort of spike as it was not constantly running with such voltage (I have diagnostics tab always enabled).
I should also mention that I didn't experience any change in FFB, it was working as expected.
Now I am torn on what to do next. Should I just wait and observe and send the controller box back when it'll get worse? Will it ever get worse or no? What am I risking, controller box damage or both controller box and motor damage? Or maybe it's just an anomaly that I can ignore?
Most of the time the observed voltage rise is around 3,09 - 3,22 V.
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Sounds like a one-off spike in an extreme situation. I'd say still not cause for worry but if you could post a screenshot of your Diagnostic tab, we could establish a baseline for your Telemetry readings
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@sim-plicity-dev
Thanks for your reply.I observed the behaviour of the base throughout several days, managed to get around 5,20 V only once, the rest of the time it's around 3,20 V. No FFB problems at all. I have my torque turned up to 20 Nm and in AC the gain's at 45%. After increasing the gain I actually never got it above 5 V.
UPD: 15 minutes after posting this I now have my base disconnecting every time a high torque amount is reached. I can even recreate the issue when applying high torque from End Stops.
UPD 2: The disconnecting issue wasn't tied with high torque apparently, but with any torque, it stopped by itself after some time, oddly I didn't get USB resets in telemetry, but could see SW disappearing and instantly reconnecting in devices. Looked like an EMI issue, but I never got it before on the base itself.Down below screenshots of the 2 sessions I had one after another.
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Looking at your screenshots, the circuitry is working as intended.
The motor acts as a generator when rotated by hand. As this is a closed system, the generated energy manifests as a voltage rise which disconnects the PSU and the generated energy powers the system until it is expended and the PSU re-attaches.
Voltage is allowed to rise unimpeded (except for energy harvesting) till it reaches 41V when the circuitry kicks in and gradually bleeds the excess energy off to prevent a hard-lockout at 44.5V. In your case, that would be a voltage rise of 6.35V.
It would seem that your 5V rises are due to the amount of energy generated during specific high velocity counter-steering events taking longer to dissipate than the usual 3.2V type events.
Keep an eye on the disconnects though. It sounds like a cabling related issue causing intermittent USB bus disturbances.
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@sim-plicity-dev
Thank you for such a detaled reply, that explains a lot.
As for USB disconnect issue, it seems like it's no longer present. It laster for only 5-10 minutes and I wasn't able to recreate it after hours of driving. I think it was related to EMI (I do have some in my place). Will keep an eye on this. -
@sim-plicity-dev , you say me the upper limit of "Max Voltage Rise' for the SW30 would be around 14V.
When drift on Assetto Corsa I registered the value of 15.88V
I must be worried about this value of 15.88V?
Is there something wrong with the encoder or the wheelbase?
Thank you!
