My replacement VFD arrived last night. But they had sent me the 1.5kW version despite me originally ordering the 2.2kW unit.

They obviously weren't happy with me connecting to a 1.5kW spindle.

Fed up with it all I decide to wire it up and see if it works. Pleased to
report that after a few seconds delay it fired up. I programmed in all the relevant parameters. If I get the chance this weekend I'll connect the spindle and check it all works.

One thing I noticed was the noisy fan. On the Moeller unit there was a setting to allow it to only come on if it reached a certain temperature. Couldn't see anything in a quick flick through the manual but not a big deal if it does not do that.
Also the keypad feels very cheap! Luckily it is removeable and has a connector in the back so would be seconds to replace if they are available as spares.