Motor Encoder Pictures Vectrix

Mr. Mik

Mr. Mik

1 kW
Joined
Sep 3, 2008
Messages
390
I finally had to take apart the "first layer" of the motor in my Vectux, the Encoder Housing.

An error message received during riding shifted the risk-benefit analysis radically towards: "Open it up and have a look!".

The error message was the "Yellow Wrench Telltale", joined intermittently by " ENCODR " in the left LCD display.

So far the repair seems to have worked: a low-pressure compressed air clean got rid of the error message and all that black dust in there.

Any idea where the black dust is coming from? All the dust on the outside is clearly different, so it must be from inside the motor.






More details at: http://visforvoltage.org/forum/6461-enc ... ment-37397
and more photos to follow.
 
The error message is gone! So this maintenance can be done without the special Vectrix tools needed to install and align the encoder and the disk; and without the software to program the encoder.

Just do not take the encoder or the disk apart.

Next time I will not even remove the cable connector before blowing the dust out of the encoder housing.

Any impact against the encoder disk can potentially bend it and then it might need to be replaced.

I saw that the disk bent when it was hit by the compressed air stream when I was not careful enough to limit the flow rate, but it came right back to it's original shape. I don't know how much elasticity it has, be extremely careful not to touch it unneccessarily!
It would probably be better to use a can of compressed air rather than a compressor for the job.

More pictures:




 
If you look closely you will see that the encoder disk is perforated with a pattern of holes and slots.

Here are the rest of the pictures showing the cover and the seal:


 
Is this sort of encoder a common approach, or is it unique to Vectrix?
 
fechter said:
Any chance the encoder ring was rubbing aginst the sensors?
Click to expand...

I am firmly convinced that was not the case, but cannot easily test it.

But there was a large amount of black dust in the housing and on all the visible parts, and blowing it out fixed the problem immediately.

Could the black dust originate from the permanent magnets?
 
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