setting up Moeller VFD to chinese spindle

[routercnc]

Thanks for your help on this one.

This is the unit. I also bought the keypad (contains a pot which I've been trying to use to control the speed), mains filter, and braking resistor (not fitted yet):
http://www.moeller-drives.co.uk/prod...products_id=59

Online manual is here, but I found it hard going and because they are obviously designed for industrial use where the installation is being carried out by someone who knows what they are doing!
http://www.inverter.co.uk/applicatio...v51-manual.pdf

The software which comes with the drive shows all the possible parameters. The idea is that you can set them in software, then download them to the VFD via a RJ45 cable, but I've yet to get them to talk to each other, so I'm using the software to look at possible values, then type them in manually on the VFD panel. I've saved these parameters out as a csv file, attached below.

I've also attached screenshots of the software showing all the parameter (sorry there are so many pages!)

If I rotate the pot position on the front panel it will start whining, then spin up to a very slow ~12Hz. I can't get any more out of it.

I then tried changing to 2 poles and 50Hz base freq but the spindle got hot quickly and ran roughly, so I stopped it straight away. I thought that base freq was the minimum speed, which is quoted as 8000rpm, so I had put 133Hz here because I'd read about overheating problems if you run these motors too slowly - although this might just mean air cooled ones. Or does the base frequency refer to the mains freq?

Star vs delta winding - any idea how I'd find out. There is no documentation with the spindle in true Chinese style.

Can I confirm checking the AC output - I am checking across pairs of the UVW terminals, or between earth and each terminal?

[routercnc]

CRACKED IT!

Read around more and found a thread about setting the base freq to 400Hz (this was for the Chinese VFDs). Tried this and success! On the previous screenshots A003 and A004 should both be 400Hz it would seem.

I'd kept the 2 poles as you suggested John, thanks for that. You mention base freq as 50Hz - it doesn't seem to like this, maybe that is for motors used on for lathes, drills etc rather than these Chinese Spindles?

Anyway, working now. When I press the green {I} button, then spindle quickly spools up to 50Hz (stays cools, sounds nice). I can then rotate the pot and send it all the way to 400Hz.

There are settings for this start freq and end freq (A061 and A062) which were 50Hz and 400Hz, which seem to be the ranges controlled by the pot.

I then set the accel and decel to 2 seconds (default was 10sec) and it all still works fine. Since I'll be using small tools, with low inertia, I wonder if the braking resistor was a waste of money!

Anyway, happy bunny

p.s. The VFD, mains filter, and spindle are on my computer desk (in the house) and are about 3" away from my LCD screen - there is no interference or lines on the screen which is an encouraging start. With the mains filter and screen motor cable it would seem to be doing something although the real test will be when it is back in the garage on the CNC machine.