Ordering industrial made AC servo drives

[BALLSCREWPRO]

How about using this drive as a spindle drive with variable speed control.

[Xerxes]

Ballscrewpro, this drive is suitable for a servo spindle since it has velocity mode in addition to positioning mode. Spindle must have an encoder.

[martzis]

How about using this drive as a spindle drive with variable speed control.

I have one prototype drive from Xerxes and I have been using it as a spindle controller for few weeks. It has been in action about 10-20 hours. I have connected it to CMC 670W / 100V / 10 000 rpm servo which runs very nicely. I am using 135VDC voltage and I have set drive's current limit to 15A.

In velocity mode the step/dir input can be used to set the desired velocity. I have an encoder connected to it which allows me to adjust the velocity simply by rotating the encoder wheel. I probably will use the SPI input for this purpose in the future but currently my only LPT port is connected to my stepper motor pulse generator.

I have few smaller servo motors I have bought from you ballscrewpro but I have not yet had time to test them with this drive. Some of the servos does not have an encoder but I think this chip could be quite low cost solution for that problem: http://www.austriamicrosystems.com/0...ion_AS5030.htm. When I have enough time I will make a PCB for this chip.

[tivoidethuong]

Hi Lino,
See some rough specs here: http://granitedevices.fi/index.php?id=8

Better specs & documentation will come later.

i hope your product soo lunch

good luck to you

[miljnor]

Any news on if these are available yet?

[Xerxes]

Yes! Drives have been available for some weeks now. It seems that I have forgotten to post here about it.

Please check few last pages of the other thread:
New sinusoidal AC servo drive development
And:
http://www.granitedevices.fi/index.php?id=2

[FPV_GTp]

Yes! Drives have been available for some weeks now. It seems that I have forgotten to post here about it.

Please check few last pages of the other thread:
New sinusoidal AC servo drive development
And:
http://www.granitedevices.fi/index.php?id=2

Hi Xerxes

on your website , i can't find prices of your products ???

Versatile Servo Drive VSD-A
A 1 kW positioning drive for DC and AC servo motors with an encoder feedback and step/dir & SPI input interfaces.

I'm interested in several of these drivers ?????? what is the price ????


cheers

[Xerxes]

At the moment website unfortunately lacks some content (lack of time is the problem :). See pricing details here:
New sinusoidal AC servo drive development

I recommend reading the thread after post 481.

[Motorcoach1]

I'm rather new to servos and CNC , so I was studying robotics. I have some Pittman gear motors that I wanted to use. For newbies like me I really recomend is site http://www.vexrobotics.com/vex-robot...oder-kit.shtml it has cheep encoders for those folks that are not useing stepper drives. The learning curve was hard for me at first till I went to this site and it is really stright forward. the prices are reasonable for begginers and there is plenty of info if you get lost. there are a lot of decent motors out on the market outher than steppers so this should work well for someone just learning CNC controls.

[CNCAddict]

That encoder kit looks neato, but after quadrature you only get 90x4=360 increments. Most servo systems are only good for maybe +-10 counts if the structural loop is very good. With the integral term it will eventually get to 0 error, but for path following +-10 is about as good as you can ask for. So you will need some very fine pitch screws or a large belt reduction to use these encoders for CNC, just a heads up.