Thanks for that info. Ted.
When I converted my Tom Senior (using an Omrom VFD from E-bay, brand new it was as well) I made up a circular scale divided in a linear proportion scaling readout frequency (0-50Hz) against motor speed (1380rpm) in 5Hz bites. That worked out quite well but the digital display sounds interesting, I'll have to research that one Ted.
I also did use the SY cable but didn't find the need for an filter.
Incidentally the VFD to go on the Myford is an Altivar 11, again brand new from E-bay, £41 quid I think I won it for.
I've just got to finish modifying the motor housing which had a reduction gearbox attached to it and sleeve the motor spindle from 12mm to 5/8" and lastly adapt the body to give the same foot mounting arrangement.
Len. P.