Advertisement
avatar: FixerOfThings
FixerOfThings
10 posts
Replied to FixerOfThings post on January 8th, 2019

Hello,

I have a J-20 XPI Centrifuge w/JLA-9.1000 rotor that I am trying to repair. When running the unit initially, it would spin up and then give the D11 Error then shutdown the drive and slow down without the brake.

I ran the windage calibration, it completed with no problems, but it still gives the D11 error when I try to run it. It doesn't appear to have any other issues.

avatar: FixerOfThings
FixerOfThings
10 posts
Replied to FixerOfThings post on January 29th, 2019

I'm going to have to change my user name to CantFixThings 

avatar: dpkleessr
dpkleessr
1038 posts
Replied to FixerOfThings post on February 6th, 2019

The D11 diagnostic refers to the brake resistor overheating.  There is a fan that cools off the resistor under normal circumstances.  Your situation is NOT normal as the brake resistors should not be having any drive current flowing through them during acceleration.  In the 17 years that I worked on Avanti J's, I never encountered that particular error so I am really not sure how to proceed.  Does the drive appear to be accelerate normally and at least get up to speed?  What happens after the diagnostic is exactly what the centrifuge is supposed to do because if there is a failure of the cooling fan, you don't want all of the drive current running through the brake resistors with no cooling.

Don

avatar: FixerOfThings
FixerOfThings
10 posts
Replied to dpkleessr's post on February 7th, 2019

Don, Thank you for responding to my question. It has been a while since I was on this particular machine, if I remember correctly it only got up to about 2500-3000 rpm before giving the error. I put it aside since I couldn't resolve the error.

Thanks

Replied to FixerOfThings post on February 7th, 2019

I have a J-20 XPI Centrifuge w/JLA-9.1000 rotor that I am trying to repair. When running the unit initially, it would spin up and then give the D11 Error then shutdown the drive and slow down without the brake.

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #dca10d} span.s1 {text-decoration: underline}

https://mandspeoplesystems.xyz/