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VESC6 motor noisy when exceeding eRPM-limit - normal?

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braunschweiger

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braunschweig
I run a VESC6 (makerX miniFOCplus, firmware 5.1) in current control mode with eRPM set to limit at 25km/h, driving a hub motor AKM-75SX. When I exceed the eRPM limit (downwards, pedaling), the motor stops supporting alright. But in this situation the motor is much more noisy (like rattling) than in regular work mode.

Is this normal or can I tune any VESC settings/features to mitigate this slight annoyance?
 
I think I had gone through the tuning tips, yes.
Yes, the motor runs smoothly and quietly below the eRPM limit.

PS: it is a tiny hub motor (1.5Kg) and I have set limits 10A and 200W.
 
It's not s geared motor is it? That would perhaps rattle without any dive force.
 
mxlemming said:
It's not s geared motor is it? That would perhaps rattle without any dive force.
Click to expand...
But YES, it is geared. The rattling noise is only there when exceeding eRPM with motor under power (PAS active). I had hopes the rattling was due to the VESC somehow actively fighting my acceleration beyond eRPM limit and there was a parameter to turn this off :) I am not certain to understand the consequences of all VESC params wrt. pedelec use.
Btw, is there an easy way to dump all VESC-settings in a human readable way? That might make diagnosis easier.
 
braunschweiger said:
But YES, it is geared. The rattling noise is only there when exceeding eRPM with motor under power (PAS active). I had hopes the rattling was due to the VESC somehow actively fighting my acceleration beyond eRPM limit and there was a parameter to turn this off :) I am not certain to understand the consequences of all VESC params wrt. pedelec use.
Btw, is there an easy way to dump all VESC-settings in a human readable way? That might make diagnosis easier.
Click to expand...
You can export setting from VESC tool, although they will be in XML and not very pretty. From there you can post it somewhere or even use AI to *cautiously* explain your settings
 
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