Servo Error

[MackBMF]

Hi,
I have a Kondia FV-1 with a dynapath delta 30. Durring operation it faults out with an X axis servo error. This occurs only when moving at a high feed rate or rapid in X + direction. I suspected some part of the servo motor was at fault even though the machine shows very little or gentle use. It then came to mind that it was 90degrees+ in the shop and after I turned off the machine and opened the cab it had cooled down and would run fine for 45 min or so untill it got hot again. Then the same error. I was hoping someone paying attention to this forum would be able to add some light to this issue. Does anyone know if the fans in the cab are supposed to run all the time or if they are thermostat controlled? It does not seem like the fan above the drive cards is working corectly.

Any help is appreciated!

[Al_The_Man]

It sounds like the axis has exceed the the following error limit, this is generally caused by higher than normal loading or friction/load preventing the motor to move at the commanded rate.
Ballscrew friction, lack of lubrication etc are some of the places to consider.
Al.

[MackBMF]

Thank you Al, I checked the lubricator it is full and functioning, I ran my finger over the ballscrew and it was clean and lightly oiled. I could also turn it very easly by hand. Any other way to check things having to do with that.

[ITT-Student]

It is very important that we keep our electronic equipment cool, the number one enemy is heat. I'm a student in CEET but I also have six years experience working for Machine Control Services out of Texas.
Anyway, I have solvd a few problems like this by simply keeping the controls cooler. in some cases we have had guys even put small ac units in thier control cabinets or pointed in that direction at close proximity.
How old is the axis drive in question here?

[MackBMF]

I agree with you whole heartedly. This controller was mfg'd around 1992 from what I have heard. I was thinking of adding a cabinet cooler to this unit. Do you know of a good internet source where I could check out sizes and prices?

[Al_The_Man]

Some of the enclosure manufacturers such as Hoffman and Hammond will carry either just the air exchanger type or the refrigeration units.
Both units act as air exchangers so the cabinet can remain sealed.
Search for Enclosure cooling.
Al.

[ITT-Student]

Depending on how particular you are about appearance and weahter or not you have alot of sedement in your shop air. Some of our customers just fabricated, by this I mean cut a whole where convenient and just put a small window unit from like wal-mart or lowes,etc... Now if you need the cabinet to be sealed from the shop environment you could still do this if you are or an employee is good with fabricating custom needs. Good luck MackBMF. Oh yeah, you could try if your willing to spend the money, sending it to a repair service to replace all the common components such as capacitors and such. But usaully these intermitent heat problems are a bugger to fix, repair-wise. Or simply keeping your shop cooler if its a small shop.

[fadalserviceguy]

YOU DID NOT MENTION WHAT DRIVE AMPS ARE BEING USED - BUT MOST DYNAPATH I HAVE WORKED WITH USE BALDOR DRIVES - FRIST ARE ALL THE CHASSIS FANS RUNNING AND IF IT ONLY FAULTS OUT IN RAPID MOVES IT 'S POSSIBLE THAT PARAMETERS ARE SET JUST A LITTLE TO HIGH - THE STANDARD R.R. IS USALLY 250 I.P.M. - IF YOU RUN YOUR G0 MOVES AT 50% AND THE PROBLEM GOES AWAY IT'S PROBALY PARAMETERS

[dingo0722]

I have a delta 20 on my VMC and have found the cabinet gets so hot I get y servo errors during milling. I found the problem never occurred when I ran the mill with the cabinet open. I had the machine company come install a cooling fan with a filter.

The machine was built about 90 to 92. Not sure if the problem existed before I got the machine or not but the increased air flow through solved the problem