Need Help Selecting Servo motors

[drk]

Hi there,

After 6 successful cnc builds and retrofits, Ive started to get an urge to go beyond the 150 ipm speeds with steppers and am planning to start a new machine with AC servos. The controller will still be Deskcnc.

The help I need here is with which AC servos to go for. Every $200 the brand changes. Options are:

(prices mentioned are for one motor and drive package)

1. DMM servos (400w). All looks good but hey need an additional DC Drive. Will cost me about $500-570 including shipping and import duties to India.

add $100

2. Delta B series (400w). Good package costing me about $675. Only issue is this is their lowest series and I'm not even sure they are good enough for a CNC application. Anyone having experience using these???

add another $200

3. For $890 I can get Sanyo Denki R2AA06040FXH00 + RS1A03AA AC servo motor and drive.

Keeping price low is important, but building the machine well is more important.

Another thing I wanted to learn about is, with steppers I usually accelerate them to about 1000rpm in 0.1 seconds. Ive had no problems so far but does it sound right/wrong/very wrong.

With AC servos can I go to full 3000rpm in the same time or does the acceleration have to be decreased to take 0.25 or 0.3 seconds


All inputs welcome, thanks for reading




Dev

[lgalla]

Dev.Dmm has a package of 4 Axis 900W for $1600US.This includes 4 motors,drives,powersupply etc.Good deal;
Larry
Motion Control Products - DMM Technology

[mactec54]

drk
Quote
DMM servos (400w). All looks good but hey need an additional DC Drive.

No not quite right, The Dmm system package is a Motor, Drive, Power supply Breakout Board Cables, everything to make it run is a round $250 per axes for the (400w),You need some hook up wire 16 gauge only

With there breakout board a drive & motor, you can be running in less than 5 minutes using there set up software, or from Mach3

[drk]

Thanks for pointing that out Mactec54,


What I meant was DC powersupply not drive.


And Larry, yes that deal sounds amazing, but I use Deskcnc so the breakout board dosent really work for me yet



Dev