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Motor seize and ERPM current ramp speed

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krabsheva
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VESC FreeVESC Platinum
Joined: 2025-05-11 04:44
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Motor seize and ERPM current ramp speed

I am using a MY1020 motor with a Flipsky VESC controller in FOC mode for a mower project. I am new to all of this, so I assume my terms and basic understanding of VESC may be wrong. I have successfully set up VESC and ran the motor for hours under load. My only tweaks to the setup wizard settings were to increase the motor current and limit the ERPM. I run by setting the ERPM to a value I am happy with. All seems to work well enough, but I have a couple questions:

  1. Is it possible for VESC to detect when the motor seizes due to mechanical obstruction and drop the current until the motor is able to turn again?

Due to the nature of what I am doing, in extreme cases the motor rotation can seize. What seems to happen is VESC ramps up to max current until the motor turns again. This is not a huge problem because I easily and safely clear the obstruction within a second or two. However, I assume the wires or motor will fry if I leave it too long. It would be nice if VESC could detect the seize and drop the current down to the minimum it takes to turn the motor under no load, so the wiring and motor would be safe indefinitely (or at least greatly increase the time to burn out).

  1. I would like to increase the speed at which current ramps up and down for a fixed ERPM as the motor/controller experiences varying load. What setting(s) control this?

With my current settings, it seems to take too long to ramp up current to hold the ERPM as the motor load increases resulting in a seize. I think it would greatly decrease the seizing occurrences if the current ramped up faster. Once seizes are cleared, it seems to take a second or two for the controller to notice and decrease the current to the motor. It would be greate if I could increase and decreast ramp up and down time by a factor of 2 or 3.

I assume this is a PID gain variable. However, there are multiple and based on the setting names I am unsure which to adjust. It is difficult for me to find this through trial and error because the load changes randomly and it is frankly dangerous to add load outside of my normal use. If I knew which setting(s) to change it would make this much easier.

Thanks.