matsuura mc500v mill - VFD advice for spindle motor 80's yaskawa UAASE-5K)

Was looking for onfo on your motor and came across this thread
forum.linuxcnc.org/30-cnc-machines/32122...00v-retrofit?start=0

Picked up on the resolvers. Seems like they used the original VFD.
Pico systems have a conversion board  forum.linuxcnc.org/30-cnc-machines/32122...00v-retrofit?start=0
And Mesa have the 7i49 resolver board and have stock  store.mesanet.com/index.php?route=produc...oduct&product_id=101

Why don't you take the motor down to Conon and ask them?

I have a spare resolver, it’s in Florida. I don’t plan on using it. If you wanna pay the shipping... what plug does your have? Cannon or plastic?
Not remotely familiar with Aussie electric,, not sure any observations would be relevant. This machine has an MX-1 controller?

Thx JR for the offer of the resolver, ideally I would put the encoder/resolver on the spindle and not the motor where it is at the moment (motor/spindle is belt driven). I'll keep the resolver it in mind and if I get stuck with my plan A (well B actually).

I bought a quadrature encoder (plan a) which should work with my mesa 7i96/7i76 combo and this will fit where the existing resolver is. But after looking at installing on the spindle (plan b) there's very little room once the tool change piston/mechanism is in place. So l think I might change tack and look into an optical/disc style that will install easier and be protected (plan c).

Re the controller it was an MX1 with CRT. Now's got a 23" touch screen.

Rod I had a chat to Jimmy at Conon and they look they have a VFD (BD600) size that will do the job, he's got both single and 3 phase for that capacity. It's not cheap but not silly either.
He made some comment that MODBUS won't work as the software has recently been upgraded, I'm not sure we were hearing/understanding each other very well so I'll double check that before I head down that path.

Tonights reading will be to go through the manual and see if I can figure out if it might work (the next question is can I make it work ). Hopefully I get some more info from Yaskawa overnight.

If you have a 7i76 you can control the VFD with analogue voltage, so you don't need Modbus. (and this gives realtime control, which most LinuxCNC Modbus solutions don't offer)

Thx Andy for the suggestion. When you say Modbus isn't realtime I assume that means you sometimes or always see a delay, is it 0.25/0.5/1s delay or does it vary?
I tried searching but I couldn't find anything specifc.