Another Heidenhain 145 user

[hmc710]

Hi All, fired up our new / used Bridgeport Series II Interact with the TNC145 Control. Got the manuals from Heidenhain, new buffer batteries and loaded the machine parameters. Here is the main problem I am having. Upon power up, I start the auto cycle and the machine finds x ref ok, when I hit auto again it travels to the y ref point, hits the ref switch (I assume this is the ref switch), the dro starts to read, and then the drive takes off WFO and I get a gross position error, flashing, which means I have to reboot. The motor limit switch are all functioning and I can manually move all axis. If I am in manual and moving toward the y ref (Y+) and quickly hit and reverse with the joy stick when I hit the ref switch, the dro starts to read, BUT, as soon as I let go of the joystick, the drive takes off WFO again, moves about a 1/4" and the gross position error. The ref position switch (I think thats what it is) and the hard limit switches all appear to by physically working. I reloaded the machine parameters per the manual, but I know there are some generic values in there. One question is the limit positions for +x, -x, etc are all listed as +/-19999.999. If the x, y, z, have different travels wouldn't the values be different? Because I get the gross position error, I am hoping I just have a limit parameter wrong, but the take off in rapid traverse could point to something else. I'm going to read more of the info I have tonight and any help pointing in the right direction would be appreciated. (especially correct Kv values, whatever they are)
Thanks,
Tim

[machintek]

Swap X and Y drives first. See if the problem follows the drive. Swap X and Y motors. It may be a bad encoder on the motor.
There are a pile of gross positioning errors, but in general it means that where it expected that axis to be it is not. The error is usually followed by a letter.

George

[gus]

you need the specific parameters for this machine. DO NOT run the machine without the x y and z limits set

there is a parameter for axis direction on the x y and z axis, this could be reversed in the y axis, when back at work I can look it up. It might also mean the travel when approaching reference is also backwards, making it run the right way, if that makes sense.

Find someone with thsi exact machine for some of the machine specific parameters that you need

[machintek]

Typically all machines that are the same use a set of generic parameters specified by Bridgeport EXCEPT for travel limits to each side of the home switches and backlash. You also change some parameters when you specify communication protocol, decimal or comma, etc.

George

[hmc710]

Thanks Guys, I appreciate the info. I tried sneaking up on the y limit last night with the auto start and stop buttons. I did get the unit to give me a different error code, "wrong ref". I've looked at my approach directions and have them all in the + directions as this is where the table has the 2 limit switch cams on it. The - direction of the table only has the hard motor limit switch cam on it. I ASSUME that the z is the same way, but I have the same "gross position" error on the z axis. I changed the order of auto traverse from z y x to x y z in the machine parameters. I tried putting in smaller values for the limits but when you get into manual manual mode with code 84159 it tells me that "software limits not enabled".

Before I start swapping parts I would like to exhaust the machine parameter situation.

Thanks,
Tim

[gus]

http://www.cnczone.com/forums/showpo...6&postcount=11

has a pdf from machinetek of 145 parameters for the r2c3, whihc I knwo has a different homing style from the interact. The Ywould be reversed because the interact homes y forward. note the s2 counting directions are different

[hmc710]

Thanks Gus and Machinetek, printed off the parameters and will compare with what I have from the Heidenhain manual. I can post these generic parameters if anyone would like, if its not too difficult, or you can email me for them, or get your own set from the Heidenhain website for that matter, but anyway...There are some differences in what I have entered so I will see what I can play with today after I get my painting done and am watching it dry. One question; From reading the manual it list LS linear transducers. I do not see any transducers on my table, only the rotary encoders on the servo drives. The parameters are 42, 43, & 44. I am using the 2 value for the rotary encoders. Thanks again for the help and hopefully I won't wreck anything today!
Tim

[hmc710]

My machine has joystick controls mounted on the table and quill. The manual talks about a rapid traverse button. The joystick has a button in the center of the handle. The table will not move without pushing this button while moving the joystick. Is this normal or should the table move when the joystick handle is moved and rapid traverse when the joystick button is pushed? Thanks,

[machintek]

Center button is rapid. Otherwise jog stick is a slower feed.

George

[hmc710]

It doesn't appear to be working that way, won't move without holding the center button. Could just be a function of manual manual 84159 mode, or part of the problems. Hopefully I can get it to find out where its at, ref points, today and then see what the joysticks do. Thanks for the input!

[hmc710]

Hi All,
Changed some machine parameters and hit the ref marks! Noted differences between the two lists and the approach dir, counting dir, special proc for ref mark approach, and were the biggest changes, I don't know which ones were it. The x dro reads 5549 and the y and z read 0. When I first tried it I had the recommended sequence loaded , z, y, x and z hit ref right away. Y started to travel in wron direction so I stopped it and reversed approach dir then it hit ref, x started in wrong dir so changed parameter and it hit. Thought the counting were wrong for y and z so I changed them back, and lo and behold, the "gross position" error.

NEW PROBLEM: now after the machine hit its ref marks it is in manual mode. Try and joystick off of "zero" and the machine fights me and moves it back. The joystick still will not function without the center button held in.

Stupid question time: Where the table sits right now, after hitting the ref marks, is max x+, max y+, max z+; (if the lower left corner of the table is 0,0, the spindle is in the max + positions) any further movement in any + direction and I will hit the hard limit switches. The x readout is the only one not reading zero, is this correct? Enought for today, one step at a time.
Thanks,

[Dar]

hi hmc710. i know very little about my machine but learning every day. on mine the joy stick will move axis [without botton pushed ] only when spindle is running. hope this helps
Dar