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Hi Jeremy.
maybe talk with mike at midwest CNC?
http://www.midwestcnc.com/index.html>
I have no connection to these folks, but they have gotten me out a pinch.
Nice guys to deal with.

I agree DennisCNC. Those old MAHO systems can be quite bothersome.

Does the Y axis have hydraulic counter balance? If yes, check that it's working correctly.

Still think if you look at the machine electrical drawings it would be more evident what is needed.
Did you apply the the high voltage AFTER all the low voltage and enabling signals.
Another issue...

Hello Larry.
Your comment about glass scales and backlash is correct.
However there is usually a limit to the amount of backlash that can exist, and still have the system work.
Usually a very...

do you have the electrical wiring drawings for this machine?
it would help a lot to figure out what you need to bridge out and what power you need to supply to run the servo drive / motors.

I would look at linux for sure.
It's very cost effective -> read free.
However consider a very good value for money add in card from Mesa or Pico.

Definitely close the loop to the control is preferable.
For all the reasons that Al has stated, plus the greater tunablity and troubleshooting.
I have been servicing industrial grade CNC machines...

not sure about the drive from the picture.
look at the drives along the bottom, where the motor wires are connected.
behind the top board.
there might be some circuit breakers to the left and to...

i don"t speak Polish Bartuss1, but I must say CZESC! Keep up the intesting stuff.

hello and happy new year everyone. Bartuss1 please keep us up to date. I always enjoy looking at the things you build.

Good luck TerryG
I'm going to watch this thread

TerryG

You will know when you see the transfer of the blue from the spindle taper to the tool holder, or vise versa. So what I'm getting at is, put a very light spread of "blue" on the spindle...

terryg

I just finished reading through this thread ( rater quickly) so if what I suggest has been mentioned, then disregard this post.
Many years ago (30+) I had a situation on a high speed...

I could use that if too, if you don't mind.
Sent you a PM with my Email.
Thanks.

Davie:
and anyone else following this thread. total brain fart on my part. i forgot to mention earlier, which could have save time and sweat. change your constant "C81" to "1" this will show your...

Philips scales are very rare. I don't think you can get them anymore from MAHO. I had to replace a Philips reader head, and I ended up getting from someone in England who had some spares.
However,...

Davey:
The scale I bought was 1540mm long, not 500mm. They get more expensive the higher the rez and longer in length. As far as the rez of your LS403, I don't know. It's kind of rare to see HH...

The LS 403 scale is an obsolete part. But not a worry usually HH has a equvalent upgradable part that will plug and play. I just bought a HH upgrade scale for a grinder (.0001" resolution) for...

Davey:
It's a membrane keypad. Small plastic bubbles covering a thin sheet metel spring type contact. 3 in 1 won't help. It's usually the metal contact breaks or it gets less springy from metal...

Lohmeyer:
Exellent post Mike.
But I didn't see any pictures of the left side of the machine.
Of the tons of MAHO's I've seen, this will be a first without error indicator.

Davey:
Do you have...

If the only alarm message is I01, then things many not be so bad. First look for something silly like the "Emergency Stop" push button is depressed, there maybe more than just the one at the operator...

Scroll through the constants, make sure you don't have any goofy values in there from the power fail. If all looks good , set C80 to 0. Make sure you press the "store" button. Then press the "manual"...

Davey;
Sounds like there is some optimism in the air! Good advice from Mike, i must say. May just say, if you do get the constants recovered and the machine back up, make a few multiple copys of...

Fish, IMHO, I would forget the through the spindle. I my experence the rotary coupling that is fitted to the end of the spindle is prone to failure. Maho use a complicated coolant system to keep the...

Can you email me the contents of that floppy? Do you want to see if I can do anything from my end? Shoot me a P.M. and I'll give you my Email address, if you want.

you need to make "C80" back to "N=0" to be able to run the machine. "C80" is the unlock or "key" constant for enabling the editing of machine constants. as far as DOS goes, it's a command line OS,...

If you have a computer that will boot up from a USB port, then you came make a memory flash stick formated to DOS 6 work as your hard disk. I use this often for old software I sometimes need to run....

It,s been almost 20 years since I was on the road doing service. Maybe I was, but I just can recall all the places. I was the only MAHO tech for all of eastern Canada in those days. We still have 3...

You're just north of me. I'm in Mississauga, but the plant is in Brampton. I'll try to remember to get a picture of the constant switch you should be looking for. There are a group of 3 miniture...