Bridgeport Boss 9 R2E4 convertion

The label mentions a tachometer, so it seems likely that the 10pin unit contains a tachometer. But that would only use 2 pins, leaving 8 for encoder power and three differential phases.
But it could also be a tachometer and resolver.

A bit of a Google found this:
www.grmolds.com/?p=57
Which seems that it might be a useful resource for your conversion, but some things have changed in LinuxCNC and he appears to have replaced the servo drives.

andypugh wrote: www.grmolds.com/?p=57
Which seems that it might be a useful resource for your conversion, but some things have changed in LinuxCNC and he appears to have replaced the servo drives.

That is a good find, I am concerned about "things have changed in LinuxCNC" ??
grmolds is utilizing the original (tack/encoder) on the Bridgeport and connecting to 7I77 SIX AXIS ANALOG SERVO PLUS I/O DAUGHTERCARD from what I am seeing.
From grmolds.com I don't need to replace the servo (tack/encoder)? What do you think Andy?
Thank you for your help:) I am lost without it!!
I will be looking closely at www.grmolds.com as this is the same machine I am working on..
Randy

Birddogs wrote: I am concerned about "things have changed in LinuxCNC"

Mainly that the instructions how to install LinuxCNC on Ubuntu are no longer relevant.

Power supply?
I see some people utilize the transformers from original cabinet, is there a guide to wiring this up to power advanced motion controls 25A20 servo drive?
or is it best to purchase separate power supply and remove all the original transformers?
my dc servo motors are rated at max 146 volts.

Birddogs wrote: I see some people utilize the transformers from original cabinet, is there a guide to wiring this up to power advanced motion controls 25A20 servo drive?

Are the voltages correct?

Are there also rectifiers and capacitors?

Birddogs wrote: Power supply?
I see some people utilize the transformers from original cabinet, is there a guide to wiring this up to power advanced motion controls 25A20 servo drive?
or is it best to purchase separate power supply and remove all the original transformers?
my dc servo motors are rated at max 146 volts.

Dont get rid of transformers and/or power supplies. IT has 24v and 5v power supplies you will need for the 7i77.

The large 460v 3p transformer I rewired and changed the taps so I could use single phase 220 input. I used VFD for the spindle 3 ph motor.

How far along are you with this? I am starting to do mine as my original control died on it.


Bob