EZ Trak Dies mid cut

[jpboyt]

Scenario: Series 1 Bridgeport with EZ-Trak SX runs all day just fine until late in the day when it decides to quit mid cut in the roughing cut of a canned routine circle. Control ends up locked up and hitting "exit" only brings a complaint of "Hit Hold before Exit" Of course everthing is locked up at this point. Reboot and rehome. Set Zeroes (just to make sure, this thing gets lost at times after a reboot) Sequence search and restart causes same result as the cutter re-enters fresh material. Reboot, etc. and use 15% feedrate. I am able to complete circle. Of course this is a circle that is part of a repeat so I sequence search again to finish to circle to depth. Same result only this time I only get about 1/2' into the circle and it dies.
Is there some sort of load monitoring or max amps or something that I am running up against. I know that after I break a cutter in the middle of a rapid that the machine will stop (Don't look at me that way, I know you know what I am talking about.) but I'm not even close to putting that kind of load on the machine. Same cuts I been doing all day. Sigh...Thoughts?
Pat

[machintek]

A SX EZTRAK should not have a hard drive. At the age of your machine, it may have been retrofitted with one. If so, the hard drive may be the issue.
The first 2 EZTRAK machines that I installed with hard drives from Bridgeport would do the same thing. Totally lock up. The problem was a vibration issue interfering with the hard drive reading. Thus the invention of the hard drive suspended on springs.
Check logic power supply voltages and its fan.
ETC.

George

[jpboyt]

Thanks for the thoughts. I had to pass on the notion of it being vibration related as this machine runs on a ramdrive. All software is copied into memory prior to any program execution. I ran the machine today and it seemed ok till the motor and the mill came up to max temps. Machine shut down again in the middle of a fairly heavy cut in an aluminum plate. Seeings how the machine ran fine cold and not fine warm I decide to use some air to cool off the innards of the control cabinet. Power off of course, aluminum chips blown around inside an electrical cabinet is sure to create new problems. Machine fired right up and seemed OK then about 20 min. later in a light pocket circle the mill heads positive X and kills itself. Would have made a cool "g" letter if that's what I had been after. Fired machine back up with the Boss looking on this time. Machine ran fine but I did blow some cool air up under the motor cowling to cool it down. Suprisingly the machine ran for a couple of more hours without erroring out. Stalling could be a funtion of an overheated motor I guess but the hard left rudder in the middle of a cut has me perplexed. Any thoughts on this thing getting lost?

[jpboyt]

Stubborn I am and I think that I have isolated the problem to a bad servo drive. Part number 31542529 for the board and P/N 31942855 for the board and mount ( I think). Does anyone have a good source? I also would like to get my greasy hands on a schematic if possible. I have another board that I tried but it doesn't light either of the LEDs and during homing attempt it complains of a -Y- axis DAC overflow. The original suspect board shows signs of overheating as the four 10K resistors, R5, R16, R27, and R36, each ajacent to what appears to be a rectangular resostor marked .22K250 M. Note: M has horizontal line through it so I suspect that it is a Manufacturers mark. Each of the rectangular devices measure approx 10K ohms. What was the main component failure on these boards?
Thoughts?
Pat Boyt

[mjasso1]

I'm trying to repair a 31542529 servo amp from CMC. Can any one help with a location for a schematic?

thanks

[shamusmtb]

Hey,
Curious as to what you may or may not have figured out with this one. I am having very similar issues with mine.

Any heavy cutting causes it to just die. The screen goes black, and the X and Y axis move at a 45° angle very slowly until I power the machine down. Does not matter if it's hot or just fired up for the day.

It did what you described (save for the "G") yesterday as far as "hit hold before exit"

Went into the case and made sure everything was tight and that there were no chips floating around.

Any help is GREATLY appreciated.

Thanks,
Al