Hi Matt

I am in Sydney, I'm after a 40volts 600VA toroidal transformer or like you, 2x 300VA... Can tell me where you found yours? and also what kind of outputs it has.

I found this on ebay but I am not sure if they are suitable:

Toroidal 300VA, 40-0-40Vac

It is centre tap 40-0-40 output. There are two modes of connection.

Mode A (Series for Double Volts)
3.3 amps

Mode B (Parallel for Double Current)
6.6 amps


thanks,
Francis


by the way, I bought the motors from MS they look great. http://www.mechmate.com/forums/showthread.php?t=2214

Hey Francis,
Sorry, not sure how i missed your post. I bought my transformers from Altronics. http://www.altronics.com.au/index.as...=item&id=M5535
I'm no expert in transformer wiring, but I didn't think a centre tap winding will be sufficient. When you parallel the windings you need to connect the two starts and two ends of the windings, but thats not possible on a centre tap as the start/end the two windings are connected.
Good to hear your happy with your motors. Can't believe you're using such are large module rack!

Question on Drive reduction
 

Hi Matt,

Love the look of you stepper belt drive, How is it preforming? How smooth a radius cut are you getting with 2.4 : 1. Any change you would make with hind sight? Do you have drawings for the plate parts that you are preparded to share.

Tanking you in advance

Graeme

HI Again
 

Hi Matt,

sorry about all the questions, Could you indicate details of the stepper motors you are using? How are they going for you? About at the stage to order stepper motors. Looking at MotionKing 34HS9801 however should consider suitable steppers from another source.

Any comments on source, part number approx. cost, delivery issues?

Feeling godd bearings arrived this morning. steel parts are cutout but not bent yet.

thanks

Graeme

Mach3 plugin for Huanyang VFD
 

For those that are interested, i have finished writing a plugin for Mach3 to control the VFD via RS-485. I have posted it on the Mach3 forum here. I have been using it for the last few weeks without any issues so i hope it works for everyone else.

congrats Matt !

Great, I will try it tomorrow and let you know how it works.:D

Thank for that Matt, our USB to RS-485 converter's should be here any day now. And when feeling better I can finish wiring up the BOB's and everything else I can build the coolant flow sensor circuit.

And I forgot to say feed the fly pigs. (I got a lot to do)

Matt could you advise your supplier of the rack and pinions im having problems finding some at a good price.

Regards Andrew.

Believe linear bearings do rack and pinion not sure if you've been in cotact with them or the price but they sell in 2m lengths, have offices in most states