[nateman_doo]

I have the micro limit switches from Keling


I am curious how to wire them to the Sound Logic Break out board. http://campbelldesigns.net/files/bre...user-guide.pdf

I have a limit switch for both ends of each axis. From what I know of any type of cut-off switch, they are generally ground (like hood pin switches in your car). There are three connections per Axis limit on the breakout board. Do I simply ignore the 12V of the limit or wire as such:


At least in this fashion, if the SIG accepts either + or - it will know whether it has reached the X+ or the X- limit. Do I have the right idea?

[4R8]

ignore the 12v + terminal on the board. You only need the signal and ground terminals.
The 12+ is used to power a proximity switch.

signal to NO on both the micro switches
ground to the common on both the switches


Oh just opened the link to the board, its on the last page

[nateman_doo]

So just the grounds are being used?


And has anyone ever used JB Weld to secure a limit switch in place?

[4R8]

that'll do the trick

[4R8]

should add, its the "ground" that gives the signal that a limit has been reached. If you were to connect to a 12+ it may end up releasing smoke somewhere

[Fastest1]

Use E6000 or a silicone based adhesive, JB weld will hold it but removal will be more difficult. The switch will need to be replaced at some time or plan for it anyway.

So just the grounds are being used?


And has anyone ever used JB Weld to secure a limit switch in place?

[SCzEngrgGroup]

It's better to use normally closed switches wired in parallel. That way, if one fails, you'll know right away, rather than finding out the next time you hit the limits and it doesn't stop.

Regards,
Ray L.

[Bubba]

It's better to use normally closed switches wired in parallel. That way, if one fails, you'll know right away, rather than finding out the next time you hit the limits and it doesn't stop.

Regards,
Ray L.

Ray,
Don't you mean in series? In parallel, you would not know if a switch even opened.

Art

[SCzEngrgGroup]

Ray,
Don't you mean in series? In parallel, you would not know if a switch even opened.

Art

Art,

Yes, thank you. That's what happens when I type before my morning coffee....

Regards,
Ray L.

[4R8]

'NC' in series to show a break in the signal during limit, 'NO' in parallel to show a signal during limt.

if a normally closed switch fails, it stays closed unless on a trip in which it will stay open, vice versa for the opposing terminals. If one fails you will only see it when it does so in its fault position.

It depends on whether you want a signal during limit or to lose the signal during limit