Still Cant get Fanuc 10tf Control to work, Who can I get out here to help?

[blakemachine]

As per this earlier thread:

http://www.cnczone.com/forums/fanuc/...t_message.html

I am still having the same problems, and cannot get anywhere with this. I am to the point to where I need to bring a professional in here to help out. Who can I even contact, to hire reasonably. Keep in mind I can buy a whole different machine for 5k, and I know how expensive repair guys can be. I tried calling a local repair place, and they basicly told me good luck. I do have the following books I have bought to go with this machine:

Fanuc 10/11/12 Maintenance Manual
HT-20 Schematic for this control
Fanuc 10/11/12 Operaters manual
System 10/11/12 Computer Numerical Control Products book

Where Can I go from here: Al the Man has been AWSOME at helping me trying to diagonose this problem, but he says he cant do much more over the internet. If the ladder has to be changed, does the cassette have to be taken out of the machine, and the Eproms unsoldered, and each one of them read and modified? Can the ladder be modified from the CRT somehow?


Also some backround on this machine. I bought it with the cassette missing, it is a HT20 Hitachi Seiki lathe with a fanuc 10tf control. The previous owner said the cassette got burned up. So I also had the opertunity to buy two other HT20 Lathes with fanuc 10tf controlls on them, that were going to the scrap yard. I had changed the mother board out of the machine I am trying to keep. I also had the parameters from the other two scraped machines, and kept the cassette from the scrapped machine and installed it in the machine I am trying to keep running.


Any help and suggestions on what I can do next would be great. Thanks.

[Al_The_Man]

I missed the last Utube postings in your other post.
It appears the the fault that is tripping the alarm is register bits F000.7.
Abnormal torque.
This is a BMI register passed from CNC side (Servo) to the PMC alarm side.
I will see if I can track down the definition of F000.7 to see what the possible cause is.
Al.

[blakemachine]

Your awsome as usual Al is the man!

[Al_The_Man]

I believe we determined I have the ladder for this machine, or one like it?
As the previous list I sent, the comment list shows the same comments as your ladder.
One is R400.5 Lack of Lube Oil. as well as the R401.0 Memory "X Axis Torque Alarm"
Interestingly R401.1 latches it self in once tripped.
You will notice that R062.3 should be off, tracing R062.3 shows two limits in the rung, X002.6 (not labeled) and Proximity switch LS48 labeled Z Torque Normal.
On the Machine drawing print is is shown as Z Axis Torque alarm and is shown next to the Z axis motor, I am not sure what this Prox does? The X axis also shows one.
If you trace it, it may show the function.
Also look at the inputs and see if X002.6 or X003.7 shows closed (1).
Al.

[Brucesu]

Hi
I know nothing about your machine. Could lack of lube oil be coming from a level/float, flow or pressure switch?
The x-axis torque alarm may be real. Perhaps dirt has adhered to the screw. Try wiping it off and relubing a few times. Are bearings tight. When it trips does the axis seem suddenly tighter than before tripping possibly indicating dirt or tight bearings?

[Brucesu]

I just read al's mention about a torque prox. Perhaps the motors are on a spring loaded mount. A prox could be used to detect mount movement and if too great the prox could change states hi/lo or vice versa thus giving the error. It is possible that they are working as designed, or need adjustment, or something is tighter than it should be in terms of rotation freedom.

[Al_The_Man]

Yes, the OIL lube fault is due to input X004.1 not being made, this is shown as a float switch in the oil reservoir.
The X axis torque alarm goes back to a Z axis proximity switch shown as Z Torque, it would have to be located to see its actual function??
Al.

[blakemachine]

I should now also add that it has a soft limit over travel + alarm for the Z axis, which I cannot get to clear, I have even went into the limit switch itself, and ohmed it out, and it is good, and the connections are good, but no matter if the two wires on the soft switch are touching (nc) or open, I cannot get that code to clear.

[Brucesu]

The soft limit may not be and probably is not a switch. There may be tables that you can edit for each axis as far as soft limit travel for example a few inches or more. Have you been able to get your machine to zero? If not the value may not be right in the machine memory and that could also cause a soft limit. Your error screen showed a z axis torque error at one point not x. Check that axis for the conditions I mentioned previously as well. As far as lube oil being low. If the float switch is not made is there enough oil in the resevoir. As far as wiring check all i/o that you can manually while in a safe mode.

[Al_The_Man]

As Brucesu mentions, a soft limit is a max limit parameter setting, not the physical limit switch.
But going from memory if you can enter the IPL screen at power up by holding the "." & "-" buttons while powering up, you need to set the IPL menus that says, Ignore Soft limits at power up.
Also the limits parameter can be set for a large value e.g. -99999 & 99999.
When ever you power up this way you need to preserve all parameters and options in case you clear memory, but IIRC that is by holding the 7 & 9 keys while powering up.
Al.

[brucesu1]

Thanks for the followup Al. I may look you up when I get ready to power up my hardinge chnc2 with a 6 foot bar loader.

[blakemachine]

Ok got the z alarm to quit as per al instructions.