2.2kw spindle set up

[Jonathan]

If the spindle wasn't connected properly, say one wire missing, then I'd expect the VFD to display a fault. If no wires are connected, then if I recall correctly it doesn't fault but perhaps you would hear a quiet sound from the VFD since the switching frequency is in the audible range. Is the sound you hear coming from the VFD or spindle? Which settings have you changed on the VFD? What current does the VFD display when 'running', if any?

[John S]

Here are the parameters that need to be changed on the VFD BEFORE you attach the spindle and turn it on.
Parameters need to be changed in a specific order, not simply p1, p2, p3, etc.
First:
Change PD001 Source of Run Commands to '1'
Change PD005 Max operating frequency to 400hz
Change PD004 base frequency to 400hz
Change PD003 Main frequency to 400hz
Change PD006 Intermediate frequency to 2.5
Change PD008 max voltage to 220v
Change PD009 Intermediate voltage to 15v
Change PD010 Min voltage to 8
Then..............
Change PD011 frequency lower limit to >100hz
*** This is the most important parameter for air-cooled spindles and is what will determine whether you burn out the spindle or not.
What is not documented and is crucial, is that the internal fan in air-cooled spindles DOES NOT START IF PD011 is set for less than 100hz.
To be completely safe, it is probably better to set this for something like 120hz - doing so only chops off a few revs at the bottom end of the scale and will ensure that the fan works every time you start the spindle.
I can see now why you guys like the water-cooled versions, but after sorting things out, the spindle is now running smoothly and I don't have to worry about coolant, etc.
Finally, Change PD142 rated motor current to as high as you can (the inscription on the motor says 8amp but the PD142 will only go to 7.
The Change PD143 Motor pole number to either 2 or 4 (4 is the factory setting and seems to work OK), then
Change PD144 Rated motor revolution to 3000 - (when you multiply this 3000 by the Min voltage of 8, you get the top speed of the spindle - 24000 revs.
After thi, it should be OK to attach the spindle to the VFD and turn it on. best of luck.
Anyway, as I said, this is probably old information, but I had some trouble tracking down all the individual bits - particularly the bit about fans in air-cooled spindles not working under 100hz, so if this saves someone 'smoke', I guess that it is worth repeating here.
Cheers