Proximity problem

[benchmark]

Hi Shopbotters,

Its been a long time since I was here, after being very ill twice I decided to move from the UK to the Wild Atlantic Way in South West Ireland and make things that I enjoy with my Shopbot....But I have a problem, my two proximity sensors do not work, now that they are installed on the machine, is there any way I can test them or the cables
insitu ?

I have a PRS Alpha

Thanks in advance

Paul

[jerry_stanek]

Hi Shopbotters,

Its been a long time since I was here, after being very ill twice I decided to move from the UK to the Wild Atlantic Way in South West Ireland and make things that I enjoy with my Shopbot....But I have a problem, my two proximity sensors do not work, now that they are installed on the machine, is there any way I can test them or the cables
insitu ?

I have a PRS Alpha

Thanks in advance

Paul

Do they light up when you turn the shopbot on. You can move a screw driver head in the path and see if they go off or on.

[benchmark]

Hi Jerry,

There are no lights showing, with or without metal in front of the sensor.

Paul

[jerry_stanek]

check to see if they are wired correctly. What kind of switches are they are they the round ones that have a nut to attach or are they the flat style

[benchmark]

Hi Jerry

They are the round type with two nuts, I have triple checked the connection as per the diagram.

http://www.talkshopbot.com/forum/attachment.php?attachmentid=32035&stc=1

[jerry_stanek]

My is wired the brown goes to 24Volt the blue goes to ground and the black y goes to input 3 and the black x goes to input 2 I think you are using the setup my old PR did that had the flat proximity switches that were 5 volt

[benchmark]

Thanks Jerry

i will check the wiring tomorrow and try your connections, the wiring diagram is the one that was in the PRS control box when it was shipped

[jerry_stanek]

I had to get an upgraded one here is the pic of the page I used

[bleeth]

Most common issue there is the grounds are not getting continuity. Check out that connection very carefully.

[jerry_stanek]

Most common issue there is the grounds are not getting continuity. Check out that connection very carefully.

From his post it looks like he used 5 volt instead of the 24 volt I had to combine my 24volt for my relay board and proximity switches as I only had one

[benchmark]

Jerry,

You must have a later motherboard, mine looks completely different.

I wired the sensors as per you instruction and it works fine, I did have another issue that has never happened before, I positioned the spindle at 0,0 then moved the X&Y till it triggered the limit sensors I put these measurements into my variable file then ran the XY home routine instead of moving to 0,0 it went to x=46.720. Y=4.350 I just deducted these sizes from my original measurements in the variables and it works fine going to 0,0 ...I’m just curious why this happened !!!

thanks for your help

Paul