CB master switch shutting off

[dday296666 Members Find all posts View Profile Close dday296666]

I have an chassi with an omega tech board, when I hook up the chassi the machine will start to cycle, then the cb master switch will switch to the off position. anyone with any thoughts ? thanks, David.

[Lafarge.. Members Find all posts View Profile Close Lafarge..]

Re: CB master switch shutting off

Sounds like you might have a loose wire in one of your contactors for eathier the sweep or the table. Could also be one of the contacts shorting out. you need to look for somthing arching. if you can you might run this in the dark and maybe it will show you with a flash or a spark. Check for loose wires first. Also check the heat sink under the T1 trasformer I've seen one of those do that. The reason it sounds like a contactor though is because it starts to cycle before it trips. This tells me it is motor or contact related on the high voltage side.

[J-man Members Find all posts View Profile Close J-man]

Re: CB master switch shutting off

just a thought, i had the exact same thing happen to me. i removed the little silver box that is solderd on main board, it is located on the same side as elco, to my understanding this is not used anymore so i removed it after everything else failed. hope this helps.

[dday296666 Members Find all posts View Profile Close dday296666]

Re: CB master switch shutting off

thanks,ill give it a try. i kinda like these little never seen problems popping up, as long as its on something i don"t have to have. keeps things interesting, lol

[maister Members Find all posts View Profile Close maister]

Re: CB master switch shutting off

CB trips because there is a short to ground try running each mootor and pit light and see which one causes it to trip.
good luck.
maister

[Andrew Members Find all posts View Profile Close Andrew]

Re: CB master switch shutting off

Which CB are you referring to? The one on the control box, or the master wall-breaker (assuming you have one per machine)?

The CB on the control box can trip because of a short in the 150V supply, a faulty CP3 (if you still have one installed), or the CIS safety switch (if you have one), or associated wiring.

Note that with an OmegaTek board, you don't actually make use of the CP3 or 150V supply (but that won't stop it shorting and tripping the CB).

Also, hold down the PBZ (zero) button while you turn it on. That might stop it from cycling straight away, which may make it easier finding the fault.

Regards,
Andrew.