Bridgeport Interact 412 Spindle RPM Mystery

[mmcan2]

I recently purchased my mill; it is of 1987 vintage. It has the Heidenhain 151Q controller, Bosch drives, and Fanuc spindle. I have slowly been trying to bring this mill to back life. I never got a straight answer from the previous owner(foundry) why it was taken out of service. So, I took a chance and bought it at a good price as it was in their way.

So, the issue have I encountered now is, I can’t seem to enter an rpm value below 399 rpms. With the spindle adjust knob you can have a percentage above and below your entered spindle speed. And with other numbers I enter I get that functionality at 400 I can go below to 399 but I can go higher. Is there a parameter that controls this or is there a “back-gear” that I need to shift into? Any rpm number I input below 400 rpms, I get a “WRONG RPM” fault on the screen. It clears easily but I cant get it to drop below that number. I can do an M19 command for spindle orientation. I don’t have air hooked up or tool holders yet so I haven’t tried a tool change.

I anyone has come up against this if you could share that fix I would appreciate it.

Mike

 

[huskermcdoogle]

That should be controlled by parameter on the HH control. IIRC the min on the one I learned on was 120. Anyway to access the parameters by memory (muscle memory i might add....) I think the password should be 15948.

The parameter list isn't very long, see page 45 on this scribd manual. https://www.scribd.com/doc/75873275/TNC-155-M-instal#

Maybe you can decipher it. Make sure you make a hand back up of parameters before changing anything.

 

[mmcan2]

Thanks for the reply/suggestion I will try to make sense of that page and info. I did try to modify the "01991" number and that didn't do anything. I did end up receiving some phone capture from the original owner of the parameters before they took the mill out of service. So I updated the few that were different than the list he gave me and a list I found in the pendant cabinet. And that did change things but did not improve the way the mill way working. I will keep trying to work this out and post my results here

 

[mmcan2]

Team,

Update…I have tried to modify several machine parameters with no success. MP 62, my mill is set to “5” I tried all variables 0-5. This did have the spindle turning much slower, just not controllable with input or spindle knob. MP 63, my mill is set to “01991” I changed the number to match several different combinations, again no success. MP 120 my mill is set to “45000” I tried several combinations only to get a spindle fault. All parameters were reset back to the numbers on the list I received from the previous owner. I’m going to try going into a tapping cycle to see if that will modify the spindle speed to suit the feed variable. So I have to figure out how to switch from Heidenhain controls language to ISO.

 

[gustafson]

Several spindle related parameters 184, 190 etc
78-85

 

[huskermcdoogle]

So I have to figure out how to switch from Heidenhain controls language to ISO.

Honestly I'd just stick with HH plain language. Just make a post for it and go. It's plenty capable. in fact IIRC, ISO will handicap that machine and doesn't give you ability to use the machine to it's full capability.

 

[gustafson]

I modded Fusions post for the 151 and it works fine.

 

[mmcan2]

Gustafson - "Several spindle related parameters 184, 190 etc
78-85"

Thanks for the replies, I have solved the issue with your help. It was parameter 184 spindle voltage min - max 0v - 9.999v. I inadvertently input .999v when in fact the parameter called for .099v. The list provided to by the previous owner had the proper value I fat fingered it!

I'm am interested in your post for fusion I haven't even got that far yet! I still need tool holder and retention know another hurdle.

 

[gustafson]

That is great
Thanks for getting back

 

[mmcan2]

gustafson, are you willing to share your fusion post?​

 

[gustafson]

There is one that comes with it and all I did was rip out the return to zero codes because my R2C3 doesnt accept it and the Z actually hit the limit switch for the first time ever

 

[gustafson]

There is one that comes with it and all I did was rip out the return to zero codes because my R2C3 doesnt accept it and the Z actually hit the limit switch for the first time ever

change back to a CPS this might be the right one,
i don't use it often

 

[mmcan2]

gustafson, thank you!​