What Limit Switches?

[cropwell]

It took me a second or two to realise that proxy in this case did not mean one acting on behalf of another.
If you are using proximity switches mount them where they will not get covered in metal swarf.

Rob

[Boyan Silyavski]

I always overdo but probably anyone will need only 4 switches, where 2 go on both side of long axis / If a router/ . At the end i mounted only 7 on my machine/ though bought 12 of them. But as Soft limits work, servo has its own limits, probably the board has its own software limits...maybe 4 will be enough.

I use Proximity, NC of course.

Another aspect which i overlooked is that they activate at 4mm, so basically to Home now i have to do it slowly so i will not overshoot, luckily the Chinese controller i use does up to 5 times homing, so if first time overshoots second time its precise.

What i am saying is i just found out that there are 8mm versions which may be better, so you could home faster, not that i am in a hurry. I think its worth checking and finding longer distance limit switches.



I start to think mechanical could be better idea, but they must be enclosed in solid case and avoid bending plate type. There should be clearly defined push axis and mount them respectively.



I was also mistaken to think that perpendicular to plate measured mounting will give me better precision. means i can hit the switch face and crush it if machine does not stop. / ok not so i i have hard stops, but you get the idea/. So if i am to do it again it will be side mounting where no interference will happen and switch will be better hidden on the machine, not bluntly visible.

[cropwell]

I learnt the hard way that end-on proximity switches are vulnerable.

As far as homing accuracy is concerned Mach3 wallops up to the switch until it is triggered and then backs off until the switch is un-triggered, so I would imagine if you approach at warp speed, it would still maintain accuracy and consistency of the home position.

Rob

[Chaz]

It took me a second or two to realise that proxy in this case did not mean one acting on behalf of another.
If you are using proximity switches mount them where they will not get covered in metal swarf.

Rob

Sorry, its an 'old' term we used to use as Electricians in South Africa.