Does everything run off the 24v supply? I’m guessing you have multiple supplies and they need a common ground if they are sending signals to each other. You have to be careful with some of these Chinese supplies. I read 40v across its ground and my house ground. Sent it back.
Somewhere that signal ground couldn’t find it way home…
Nice that isn’t what you want is it,I have the laser psu and I have fitted a separate 24vpsu for the board, I have the ground from P3 going to the new psu and board ground. Do you think the ground from the laser psu should go straight to the skr ground pin?
The note on your lps is ‘The foot must connect with the lasers machine’s enclosure and ground properly.’
Probably a good idea to have all of them commonly grounded to the frame of the machine.
When dealing with Chinese power supplies, check the ground of them against the ground of the machine with a voltmeter. Sometimes they are not properly grounded. I’ve measured 40 to 70v difference.
Now a bit of a stupid question coming , I did a continuity test and none of the grounds grounded to the chassis of the laser so I guess this is what you are on about?
How would I commonly ground them to the chassis,would that be just a case of connecting all to the chassis and not the psu grounds?
Do the voltmeter check before moving or changing grounds. Most of the time you want a common ground to the chassis. Don’t want your body to make that connection.
OK thank you
hi
Just checking the Ground pin in p3 and it is showing 20v but when i fire the laser that goes down to 0v,and this is only happening when i take the reading from the laser psu G and the G on my extra 24v psu , surely this cant be right plus my digital display is playing up now and not showing any numbers.
What do you think the problem could be?
Cheers
I agree…
Was that a ‘cheap’ 24v supply?
Can you measure from the ground on the 24v supply to your mains ground, is that available? Do this on both supplies.
Checking to see if one of the supplies have a ‘floating’ ground on it…
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