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Re: Understand existing Acorn Mill

Posted: Mon Jul 07, 2025 2:44 pm
by cncsnw
The acorn_mill_plc.src program you posted does not have any "custom" changes in the lube section. You can just use the Wizard.

Some lube pumps with electronic timers will not work optimally with P179=0.

For example, one with a "lube-first" timer, which pumps lube whenever power is first applied, and then "sleeps" for however long its interval timer is set before lubing again, will pump too much lube if you run many short program cycles.

One with a "lube-last" timer, which immediately "sleeps" when power is applied, and then pumps lube after the interval time has elapsed (provided that power remained on), will pump too little lube if you run many short program cycles.

In both cases, setting P179 to keep the lube pump power on for some minimum number of minutes -- corresponding to the interval timer setting on the lube unit -- will bridge over the short program cycles and allow the lube unit to work as desired.

If you have a Bijur-style lube unit with a mechanical timer (clock motor, cam, and plunger) then it will work just fine with P179 = 0.

Re: Understand existing Acorn Mill

Posted: Tue Jul 08, 2025 8:18 pm
by cnckeith

Re: Understand existing Acorn Mill

Posted: Wed Jul 09, 2025 3:18 am
by vdiallonort
Thanks, looks like the pump I have is "Bijur" type (I don't understand Chinese). So thanks, I only need to use the wizard to transfer to the new computer.
IMG_0470.jpg
Also i have something attach to my output 6 but i don't see anything in the wizard, i guess i can assume it's not used and i can just remove the wire.
output_definition.png
board_acorn.jpg

Re: Understand existing Acorn Mill

Posted: Wed Jul 09, 2025 7:01 am
by tblough
I would not just assume you can remove a wire. Someone took the trouble to run that wire and attach it to an output for a reason. I would trace where the wire goes and determine its function. Most likely, the Acorn configuration is incomplete or incorrect.

Re: Understand existing Acorn Mill

Posted: Wed Jul 09, 2025 12:55 pm
by cncsnw
Those wires look like they do not connect to OUT6.

They look like they pass underneath the relay board.

Maybe those are your analog wires from Acorn H8 to your VFD.

One more reason why it is not good practice to route wires over or under circuit boards....