Ok so I have a Denford Easiturn 3 - all converted to Mach4 with Pokeys, all working spendidly.

However the VFD is old and temperamental and I want to replace it. Looking at generic VFDs on websites and Ebay they all seem pretty much the same... but they are seem to be rated at 0 - 300hz output. But the KEB original says 0 - 130Hz.

It seems the new VFD has option to change the frequency...?

Basically has anyone got knowledge of VFD thast can give me a nudge in the right direction please?

thanks