[7ommy]

Hi,

I need help. I have an old bridgeport series 1 interact with a heidenhain 145 controler. Monitor packed in and then the controler. I got the controler repaired but lost the paramaters in the process. I downloaded parameters from the heidenhain web site but they don't seem to work. Z axis seems to reg. ok but x and y both rapid into the extreme limits when they touch the reg. switch. Any help would be greatly appreciated.

Tommy.

[gus]

look in the heidenhain parameter thread there should be some that are close.

heidenhain would not have bridgeport parameters on their site.

probably counting direction is wrong

[jmccracken]

I too have a Series I Interact, though with a 151B controller. Attached are my parameters, known good for my machine. Also attached is a scan of Bridgeport's original paperwork with machine parameters from the factory - about everything is the same, but my backlash parameters have changed a little.

[7ommy]

Hi Gus,
Thanks for the quick response. What I can't understand is why in rapids into the limit cams. It normally reaches the ref cams and stops and I can then move manually away. When I change the counting direction and press the ref cam by hand it still rapids the direction it was moving for about 10-15mm and then gross positional error. I have some new parameters I can try and see will it change things. Anymore ideas would great.

Tommy.

[7ommy]

Hi jmccracken,
Thanks for your post. I will compare your parameters with what I have and try a few changes. There are not as many parameters in the Tnc 145 as your 151B.

Tommy.

[machintek]

Could you have a open tach (velocity) loop?

George

[machintek]

Could you have a open tach (velocity) loop?

George

[jmccracken]

Regarding machine parameters, I'm attaching a short document with the 151B machine parameter definitions. This might make it easier for you to corelate your parameters with 151B's ...

[7ommy]

Hi George,

Could you have a open tach (velocity) loop?

I'm pretty new to this and I have no idea what that means.
I have come across the name Al Machine shop in the UK so I will give him a ring Monday and see if he has any ideas.

Tommy.

[gridley51]

Tommy,I saw your request and meant to send you the parameters and forgot.PM me if you want them,I have an identical machine.
OTOH,Ali will be able to help you.

[machintek]

The motor has 2 armatre wires and 2 wires that are smaller for the tachometer. There is a seperate section of the motor with its own brushes that acts as a generator creating a voltage that is relative to the speed of the motor and the control/drive watches this. Usually the issues I have with the tach is that it gets dirty and the motor starts to move with a slight shudder and thus needs cleaning.
Maybe in your case it is open (has a broken wire).

George

[7ommy]

I'm back in business again. I got some parameters that did the trick. Thanks to all for your help, much appreciated.

Tommy.