Search:

How clean are the boards in the control? If they're dirty & oily could have some funny business going on there. The sticky oil holds microscopic swarf and make a semi-conductive goo.

Checksum on all 12 EPROMs matches the label so they're OK.
I thought I was on to something when I found one EPROM wasn't completely seated. No dice. Actually it's worse now. I'm back to one...

I haven't been here for over a year. I got a bunch of extra jobs given to me last year and more or less stopped using the prototype shop.
Fast forward to now. Last week needed some parts made on the...

The graphics screen is directly drivern at EGA frequencies from a little daughterboard on the main Intel CPU card. This is the daughterboard with the big, white NEC chip on it and the multicolor...

The left-hand text screen on Ultimax II is monochrome CGA video. The right-hand graphic screen is monochrome EGA video. I have a very old multiscanning 14" CRT display, digital input monitor (NEC...

Oh, the belleville for this machine is a stock item at Key Bellevilles. Their part# is 31.5-16.3-1.75 meaning 31.5mm OD, 16.3 ID, 1.75mm thickness.
Key Bellevilles, Inc.
100 Key Lane
Leechburg,...

This went relatively easy. I probably spent 4 hours over 2 days. I could do it again in about 1 to 1.5 hours now. Click the pictures for bigger ones.
First, here's the top of the spindle showing the...

Having some surface finish issues which I think are related to low tool clamping force. I've ordered 100 new belleville washers to replace the old stack. I see from the parts breakdown how they are...

I have seen a device called a coolant inducer that converts regular machines to "through spindle coolant". Of course, the coolant doesn't actually go through the spindle, it's piped to the inducer. I...

What kind of servo amps do you have? Hurco used a wide variety - Fanuc, Randtronics, Yaskawa, probably others too.

You're following the sequence -
Manual then
Reset Servos and Spindle then
Power (does anything happen here - this turns on the 24V - should hear a small relay click and the Power button lights...

I think the <enter> 999 <enter> will let the machine start up.
You're going to have to set the toolchange height, too. I wrote a note on how to do this a week or 2 ago on this forum. To get at the...

I'm sure you set any dip switches to match the old personality board. Is the software version on the EPROMs the same as the old one, too?

If it's the very first screen once you set up the numbers...

That's an odd one to be sure.
First, the 3 plugs on the personality board that are on its outer edge. Did you have them connected when there's no +12V? If so check again with these plugs...

You're most welcome on the help - I'm sure after the fix there will be some more minor issues.

About shutting the machine off at the disconnect. I only use my machine a couple days a week at the...

I am not familiar with the newer Yaskawa amps.

When you calibrate the machine does the Z move? Can you jog Z before you calibrate? You should be able to jog Z with the machine uncalibrated -...

You've got about everything that you need. If the toolchange height is ***** that means the value was lost, so you'll have to figure it out like I did. It's no big deal.

The <enter> 999 <enter>...

All this is from memory :). I won't have a chance to check with the machine until later tonight.

If you have stored programs in the memory you need to save those as well. I save mine from the...

The batteries in the Dallas SRAM have died. Search this forum (Hurco forum) for "Dallas" and you'll find some threads on why this happens, and how to fix it.

The solution is to remove the Dallas...

What happens when you jog the Z axis in the opposite direction of the limit switch (if the +Z limit switch is on you can still jog in the -Z direction).
Does the Z motor turn?
Does the Z position...

If the encoder is loose on the motor shaft you can get the axis following error. If the motor is loose where its attached to the ballscrew you can get an axis following error.

I don't know what...

I have had really bad results using any USB to RS232 converters. I have tried a number of different dvices with the same bad results. Most of these use a chip called PL2303. I've had trouble with the...

Your machine is much newer than the machines I am familiar with.

Axis following error means the machine did not move as far as was expected, or moved too far.

Usually the error is caused by...

judleroy you could patch in the +5V from another power supply.
If it were me I wouldn't do that. I'd get a PC computer power supply and wire it up to the +5V, +12V and -12V. I'd get a separate 24V,...

I was going to mention that there's a stepdown transformer usually included with the machine - sometimes these get lost when you buy a used machine.

Most of the Japanese drives need no more than...

I still don't know for sure what kind of drive you've got. That said, the transistors are usually white plastic devices with either 2 or 3 big screw terminals on top, and 2, 3 or 4 smaller terminals....

I'm 99% sure that the OV trouble lead to burning out a drive transistor on the spindle drive, which makes it a dead short.

If you don't need to send the old drive back, let me know. I'd like to...

OV = Overvoltage which means there's something up with the braking resistor or its circuits.

Look inside the drive cabinet for the brake resistor. It will be connected to the spindle drive with...

Yes you're making progress. I've never used a winmax system myself. There's a procedure that can be used to reload the software - if you have the disks.

About the PG and -5V: most industrial pc's...

Rofuth, it's usually better to start a new thread, or sometimes your questions can get lost.

There were a lot of different spindle drives that could be had on the BMC-40. If you can figure out...