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IndustryArena Forum > MetalWorking Machines > Fadal > Fadal Following Error Discovery
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  1. #1
    Join Date
    Jul 2006
    Posts
    367

    Smile Fadal Following Error Discovery

    Hello Folks, This is somewhat of an update on my 3016L. This past weekend, my expanded memory (4meg) took a dive. So I'm left with, I believe, 44k...wow!!!! I called ITS and they said they can repair the board, at about 1/3 rd the price of a new board. So, I'm going to give it a shot and see how that turns out.

    Now that I'm caught up with my part making, I did some snooping around...which could be a dangerous thing Anyway, since the machine has been running, I have always noticed that the XYZ sounded funny when jogging. I've watched videos of other Fadals( on youtube) and they seem to run smooth when jogging. On my machine, it felt like a jerky motion when turning the mpg knob slowly and changing direction, especially in X. I have installed all new thrust bearings and a new ball screw on X. My backlash on X is 2, Y is 3. But, it still didn't have that smoothness.

    After some reading and searching, I decided to tune the amps. The first thing mentioned in my research, was the following error. Well, on my machine it has always shown the percentage of load. I never knew what the following error was. So, I went into setp and changed the setting and restarted the machine. I loaded a small program from the manual, for tuning the amps. I hit the auto button and there on the screen, the following error numbers were around 310, for all the axis. Fadal recommends about 595.

    Anyway, I messed with the gain pot and now have XYZ at around 595. What a difference !!!! The machine sounds so smooth now. There is no banging when changing directions when using the jogging wheel. That jerking motion has disappeared

    I can't wait to see how it runs when I cut my parts !!!!
    pete

  2. #2
    Join Date
    Apr 2005
    Posts
    1194

    Re: Fadal Following Error Discovery

    That's absolutely correct. We shoot for 600 (both ways...which is important). All 3 axis at 595-600 and your making very accurate parts. What was wrong with your memory? I have lots of different sizes. You need to zero memory 3-4 times in Di G0 3000 command mode and then add your extra memory and do it again...then your set. Its a little song and dance to add a little bit of memory to a fadal.
    We have had good luck with our Fadals milling mostly soft steel and aluminum up to 5 axis. We are always looking for spare parts If you have a broken down Fadal give a shout.

  3. #3
    Join Date
    Jul 2006
    Posts
    367

    Re: Fadal Following Error Discovery

    Quote Originally Posted by carbidecraters View Post
    That's absolutely correct. We shoot for 600 (both ways...which is important). All 3 axis at 595-600 and your making very accurate parts. What was wrong with your memory? I have lots of different sizes. You need to zero memory 3-4 times in Di G0 3000 command mode and then add your extra memory and do it again...then your set. Its a little song and dance to add a little bit of memory to a fadal.
    My programs would stop in the middle of a job, the display would stop working (space bar was ineffective ) and in my offset library, there would be jiberish in the columns. I did the zero memory a few times. I ran the extended memory test a few times and it constantly show problems at a certain block. After doing the zero memory thing, the machine would work for a while, but, the issues would come back. I did clean and reset all the boards ( a few times). No worries though, I have the dnc going.

    Thanks !!!!

    pete
    pete

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