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Vesc Suddenly stopped working

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Erik
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Last seen: 3 years 6 months ago
Joined: 2019-06-23 18:36
Posts: 6
Vesc Suddenly stopped working

Good day,

I have a Maytech 200a vesc 6 (https://maytech.cn/collections/speed-controllers/products/maytech-200a-vesc6-0-based-speed-controller-with-anti-spark-switch-for-electric-skateboard-mountainbaord?variant=28583516143680) running with a revolt 160-sh motor. Today I setup sensored FOC on 12s and everything was going well. The vesc is controlled with an adafruit grand central over UART.

After being satisfied with the setup I closed the box and the vesc red led started blinking and I got the following code "FAULT_CODE_HIGH_OFFSET_CURRENT_SENSOR_1" and also sometimes "FAULT_CODE_HIGH_OFFSET_CURRENT_SENSOR_2".

Under closer inspection I saw that the hall sensors positive wire came loose, could this cause an issue? The error is only when trying to use FOC and I cant do FOC motor detection anymore.

I tried doing motor detection with bldc mode, but the motor will not even spin, it just cogs. I had it spinning with bldc  mode earlier today.

Does anyone know what it could be and how to fix it?

Thanks in advance.

Erik
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Last seen: 3 years 6 months ago
Joined: 2019-06-23 18:36
Posts: 6

Just to add, I am using vesc tool 2.06 and the latest firmware.

 

TheFallen
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Last seen: 2 months 2 weeks ago
VESC Original
Joined: 2017-09-11 11:46
Posts: 222

It appears that those faults are to do with teh current sensors inside the VESC, maybe open the casing up and take some pictures, specially the current shunts?

Erik
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Last seen: 3 years 6 months ago
Joined: 2019-06-23 18:36
Posts: 6

Thanks for the response, sounds like that could be the problem. I cant see any visible damage, the black on the one shunt is just glue from the caps.

https://drive.google.com/file/d/15urgL0zxQUXWn_hs2oxsnyTlO6UjPgA0/view?u...

hope the link works.

 

TheFallen
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Last seen: 2 months 2 weeks ago
VESC Original
Joined: 2017-09-11 11:46
Posts: 222

Yeah I can't see anything wrong either.

TechAUmNu
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Last seen: 2 months 1 week ago
Joined: 2017-09-22 01:27
Posts: 575

High offset means the current shunt amplifier output is pegged at a value that makes no sense, normally means the amplifier is broken or something is disconnected.

Erik
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Last seen: 3 years 6 months ago
Joined: 2019-06-23 18:36
Posts: 6

Thanks guys, I gave the vesc to someone who may be able to fix it, will let tou know what happens.