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Came across this old thread as part of the digging through the specs to figure out how to repair my MT1-1 board and more specifically the P/D Z440G Varistor that was tired of taking the noise and...

Just wanted to post the answers to the questions I raised, and prevent anyone from working too hard on the issues. Rick Antkowiak at Heidenhain was great help today and informed me that the early...

Would also appreciate any insight folks might have about the TNC 2500 not holding onto machine parameters. One of my TNCs lost its parameters due to the battery getting disconnected. Replaced the...

As you probably know the Heidenhain link that Paul provided now requires a login. I upgraded from a Bridgeport with a TNC 151b to a couple with TNC 2500's. (NC SW 243000 08, PLC SW250144 03) and...

Gus is right - the switch for the language should be under the user parameters - if it doesn't show up there you might want to put a P after the value in MP217 (using the polar key) the next time you...

Gus,

Thanks for the response. Yep - all I have ever seen are the block diagrams (I have a pretty good collection in my Bridgeport directory). The lack of schematics results in more disassembly...

I currently have a drive issue with the X and Y axis release on a Bridgeport Interact with a TNC 151A controller. I have confirmed that the drive to CR12, and CR13 are not working and that CR14 (Z...

Thank you all for your help with the stuck X-axis. Yesterday I disconnected the drive leads from the bottom of the X-axis motor and hooked up a couple of car batterys - was able to drive the axis...

Guys,

Thanks for the ideas.

Things I have now checked:
1. the lubrication system - it is ~2/5 full.
2. the system will not respond to the joystick or the handwheel with the yellow power...

Was hoping someone out there might have some good advice to get my Bridgport Interact with a Heidenhain 151 unstuck. On initialization it is coming up with "Pass Over Z-Reference Mark, Pass Over...

Delbert,
Thanks for the response - the method you describe is consistent with what I have to do to switch between iso and conversational mode. The 151 can be switched between modes without having...

Yes I did scroll through the MOD key options, it is clear where the mode change should occur but the controller will not accept the change input (works on a friends 151 here), but mine seems to be...

George,

I have a 151 that won't allow the mode change from the mod menu either - can you share the procedure to change the parameters with me too?

Thanks,

Mark