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[Solved] E2 is blinking  

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(@meric)
Eminent Member

Hi, 

My SOLO has a permanent E2 blinking. Is it normal ?

I'm in a Tips n°3 configuration : DC motor in closed loop sensorless mode, through stand alone wiring.

Thanks.

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Posted : 23/08/2020 12:41 pm
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(@milad)
Chief Member Moderator

Hi Meric, 

Happy to see you back and having your hands on SOLO, Yes, that's totally Normal, E2 LED blinking is an indication of good functionality, in case you run into problems, E2 will stop blinking and E1 based on following patterns will start blinking or Remaining ON as: 

– Overvoltage Error: Starts Blinking
– Over Current Error: Stays ON
– Over Temperature Error: Stays ON

in case E1 turns ON, you need to recycle the power of SOLO to go back into normal condition, and before that, you need to make sure you've found the cause of the problem and solve it before. 

We will remain available for further clarification.

Regards

Milad

 

 

If you found the answers helpful and you could solve your problems, please kindly verify here to help others in the future.

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Posted : 23/08/2020 2:43 pm
(@meric)
Eminent Member

Ok, perfect. Is the error information comes in a uart message too ?

I experience some motor stalling, today. In this case, SOLO cut off the power, and I have to restart it to re-run the motor : is the restart operation can be commanded by uart ?

Thanks.

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Posted : 23/08/2020 6:53 pm
(@milad)
Chief Member Moderator

In the first software release, the errors are only reported through LEDs on SOLO, but in the next release, we are going to include some new commands, which you'd be able to read the specific errors occurred and the possibility to overwrite them if they don't keep persisting through UART, CAN and USB. at the moment you can't overwrite these errors and you need to recycle the power.

The main errors that cause SOLO to cut off the power are: 

- Bus Overvoltage protection

- Motor over current protection

- over-temperature protection

 

These errors can be catastrophic to SOLO or the system under test, so that's why the power gets cut off, on the other hand, these errors occur at the extreme ends of the limits, so if they occur the user need to keep serious attention about the cause of them to happen.

to be able to solve your issue, and understanding why the protections of SOLO are reacting can you give more info as :

1- what is the type of motor you are using and in what control mode? ( Torque, speed, open-loop )

2- the stall you've mentioned occurred due to a mechanical problem? if Yes, how overwriting the errors can solve your problem? 

 

Regards

Milad

 

If you found the answers helpful and you could solve your problems, please kindly verify here to help others in the future.

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Posted : 23/08/2020 9:04 pm
(@meric)
Eminent Member

Hi, 

The installation is pretty like the scooter example : 150w, wiring as per tip n3.

The scooter can be mechanically stucked a some moment, that induce a SOLO motor's protection, that is a good thing. But, in a normal use, the vehicle will be unstucked after a brave foot kick. => A reliable vehicle should be able to restart by itself transparently for the user.

I will manage this restart with my control unit (for instance with a proof of movement condition as a speed value), but I need to be able to handle the SOLO restart by wire.

This post was modified 2 months ago by Meric
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Posted : 25/08/2020 8:35 am
(@milad)
Chief Member Moderator

@meric thanks for the great feedback, and you are 100% right, in the first firmware we tried to stay safe so we had to go a little bit strict on the error handling, in the next release, coming in next weeks, the error reporting and handling will be much more flexible and you'd be able to restart the system after error occurrence. we will keep you informed about the new update and the release.

 

Regards

Milad

 

If you found the answers helpful and you could solve your problems, please kindly verify here to help others in the future.

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Posted : 25/08/2020 8:50 am
Illylonka
(@illylonka)
Eminent Member

Hi there!

I had the same problem when turning my SOLO on for the first time. The fast blinking looks very much like an error indicator. You could either:

 - make the blinking slower to is does not look that hasty

 - use a pattern similar to the heart beat – I saw this once on the RedPitaya board it was immediately clear to me what the LED meant.

Best

Illylonka

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Posted : 29/09/2020 4:36 pm
(@milad)
Chief Member Moderator

@illylonka:

Thanks for the suggestion, we will take it into account for the next Firmware release.

Regards

Milad

 

If you found the answers helpful and you could solve your problems, please kindly verify here to help others in the future.

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Posted : 29/09/2020 10:33 pm
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