Recent PlasmaC Update and No Motion

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6 years 2 months ago #180028 by phillc54

tommylight wrote: 1.5s, it would stay lit in one place for nearly 30 seconds

The latest update should fix that Tom. It is still being built by the Buildbot.
The following user(s) said Thank You: tommylight

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6 years 2 months ago #180035 by rodw

tommylight wrote:

phillc54 wrote:

rodw wrote: I have described this issue many times. I do not know my current version. I think if the float switch is not working and ohmic fails, it goes into an endless probing loop. It may well have been fixed.

On my machine it hits the bottom limit, pauses, goes to maximum height and displays a bottom limit reached error.

Same here, no issue there.


How can you hit the bottom limit when there is material on the table?

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6 years 2 months ago #180036 by phillc54

rodw wrote: How can you hit the bottom limit when there is material on the table?

Well if there is material under the torch then it will breakaway and the same result.

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6 years 2 months ago #180037 by rodw

phillc54 wrote:

rodw wrote: How can you hit the bottom limit when there is material on the table?

Well if there is material under the torch then it will breakaway and the same result.


Thats an assumption and does not happen in the real world. Certainly not on my table.

On 2 mm plate, the material can bend down and also float travel can cope with a few mm.

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6 years 2 months ago #180038 by phillc54

rodw wrote:

phillc54 wrote:

rodw wrote: How can you hit the bottom limit when there is material on the table?

Well if there is material under the torch then it will breakaway and the same result.


Thats an assumption and does not happen in the real world. Certainly not on my table.

On 2 mm plate, the material can bend down and also float travel can cope with a few mm.

My torch breaks away with 1.6mm sheet which is the thinnest I cut.

Maybe need a change in your breakaway design or add some stall detection.

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6 years 2 months ago #180041 by rodw
what happens if you probe on an edge that is hanging over a slat? Does it still break away?
You can't use stall detection with a stepper motor on the Z axis which is the general use case.

In any case break away when stationary with forces only in the x axis direction is not an expected use case for a breakaway.

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