Thread: Tree 325 questions - Feed rate override, rapid speed

First -How can I set the maximum rapid speed? For some reason, it throws a motor overload error on some rapids, and shows a rapid speed of 348ipm on the screen! Seems too high. I looked in the 'setup' screen, and all i can see is options to let the feedrate override control the rapids, or not... and a rapid inhibit. nothing setting a max rapid speed!

Second question - does the Feed rate override go over 100%? It seems like it does. Does anyone know what the max % is?

Also, when the machine has no load on it, the RPC is outputting 222 volts across each phase. When the mill is running, it drops to 206 from the manufactured leg to either of the line supplied legs, and 218 across the line supplied legs. Line voltage is 244 across each leg, and i have a step down x-former that i used to get it to 220. Unfortunately, I don't have another tap that could get the output voltage a little higher. I've been told to not go over 240V on the tree machines, and since it's an old control, I don't want to piss it off! I'm wondering if the lower input voltage is causing me the overload errors on rapid?

Ok, the feed rate override can go from 0 to 120%... found that in an obscure part of the manual.

Next question... I seem to be having a problem referencing zero on this damned thing now. It physically is on the markers, but when I go to jog it, it starts flashing saying there is fault... when i go to the fault/status screen, it says the axis aren't zeroed. Fine, so I go back to the jog screen, hit R, and try to jog the axis... they won't move, and the flashing starts again! MAN it's pissing me off.

I also notice the displaced position of the axis is all zeros. If I E-Stop it, then manual move the axis, it reports the axis as moving.

How experienced are you with this machine?

The axis zero procedure is a bit cryptic. Basically, go to the jog screen. If the warning is flashing, go to the fault/status area and hit reset. Go back to jog. Switch to .010 mode (6 I believe). Then press the X jog button in the minus direction five times. Repeat for each axis. The warning will flash, but the machine should still move. After moving each axis, hit R and then flip each jog button in the positive direction.

If the machine does not move when you try to move it off the reference marks, it means that you forgot to switch the MPG back to "off". Ask me how I know.

When you want to park the machine before shutting down, go back to the Jog screen. Select "Home" and flip each jog switch. The machine will rapid back to the reference marks. It's important to do this before shutting the machine off.

I'm not very experienced, but I'm pretty familiar with the reference proceedure. As it turns out, my feedrate override was at zero! That fixed the whole thing. In related news, I just finished my first part from the machine! It came out great!