Low cost AC servo from DMM Technology

[dmmcnc]

DMM Technology(www.dmm-tech.com) provides AC servo drive and motor
with 14bits Absolute encoder, +24V~48Vdc(Max60Vdc), RS232,USB tune up,
Built in Point to Point S-Curve, Linear / Circular motion, best for Small CNC
machine.

[dmmcnc]

New, affordable Mach3 break-out board from DMM Tech Corp.


Vancouver, BC, June 16, 2009 - DMM Technology Corp. (www.dmm-tech.com) is proud to announce the near completion
of our in-house developed break-out board for exclusive integration of Mach3 with DMM's Dyn AC servo drive, and motors.

Features include:

- Completely opto-isolated
- 4 axis control (x,y,z,a)
- 4 axis independent home limit switch inputs
- Emergency switch(E-STOP)input


Preliminary testing have rendered better than expected results, and we are currently awaiting a new
batch of production break-out board. Customers should expect our break-out board to begin shipping within the
next few weeks. Current perspective price for the board is $50.00 USD.

To receive update e-mail notifications on our Mach3 integration progress, please inquire at info@dmm-tech.com

[alexandrud21]

Hi All.
Now I design my first cnc machine. And I want to know if your servo sistem will be work for me.
My cnc will be 60"x60" and I planing cu use for cut 3/4" hardwood and mdf.
If you think hi will be work for me please reply here or
alexandrud21@gmail.com
Thank you.

[dmmcnc]

The new motion video available for opto-isolated mach3 breakout board with
three 220watts AC servo motor in www.dmm-tech.com

[dmmcnc]

For the 250watts DMM brushless AC servo, DMM have developed a formula for how to determine the CNC machine moment inertia with the input of ballscrew length,radius,lead,and belt/gear reducer ratio etc. Then according to the calculated machine moment inertia, by looking up a gains charts, the user is easy to find out the gains settings for the servo drive. all this described in
http://www.dmm-tech.com/Dyn2-Driver.html, section 10

Also there is an example for 2m ballscrew in length, 200kg load mass for reference.

www.dmm-tech.com

[gPiplay]

Your Dyn servo, absolute encoder feedback signal is taking the form of single
ended or differential?

[dmmcnc]

Dyn servo is using 14bits absolute encoder for position / speed servo,
the position information is feedbacked to drive through differential SPI signals,
with accumulation error protection algorithm, it is significantly more reliable than
normal optical encoder.

[gPiplay]

One of your drive with 220watts brushless ac servo motor, 14bits absolute encoder isntalled, for $250.00(USD), is that an introductory price ?, do you
will maintain the same price in the future?

[dmmcnc]

The $250.00(USD) for a set of 220watts servo, include drive, 220watts brushless ac servo motor with mounted 14bits absolute encoder, is the price for production.
We will keep this price stable, but may have some small adjustment year by year according to the situation of inflation.

[mactec54]

Hi dmmcnc

This looks like you have a good product, up to 250w is this the bigest motor you are going to do 400w & 750w would get more sales

[dmmcnc]

Many thanks Sir (mactec54), we are thinking over your recommendation very seriously. Thanks again for your words.

[gPiplay]

DMM Technology has introduced a high torque brushless AC servo motor,
7.2Nm Peak, driven by Dyn2 AC servo drive, in a purpose to drive the ballscrew or pinion directly without gear or belt reducer.
The max speed for the 7.2Nm AC servo motor is 1000Rpm, very low cogging,
very smooth, quiet.
For more information please have a reference at
http://www.dmm-tech.com/Motor.html

Thanks