[Xerxes]

The first drives could be shipped at end of this month if we get everything in time. Assembled boards should arrive in this week and rest of parts probably the next week.

[llino]

Hello,
I'm also very interested in these drives. Is there a website with a summary of specs etc available, or is it too early? I admit I've only read about 5 of the 9 pages of this thread so far... Please ignore me if I've missed the obvious.

ciao

lino

[Xerxes]

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

Better specs & documentation will come later.

[tivoidethuong]

Protoboard update:

I just got most of the missing parts and soldered them to the board. Only two 15mohm resistors and tree 33uF, low esr, 6,3V, Case-B capasitors are missing. I could not find these parts from the local component store, but I am hoping I can get them as samples. Picture of the board attached. I also attached few pictures showing my mill project.

that great PCB , what is DSP or MCU use for this driver

[Xerxes]

It is 56F8322, a 16 bit 60MHz digital signal controller.

[tivoidethuong]

thanks, i don't see any OPTO cloup IC , are you direct driver power modul from DSC chip?

[Xerxes]

I'm not sure if I understood the question corretly. But yes, these are optoisolated and DSC controls power stage directly.

[tivoidethuong]

I'm not sure if I understood the question corretly. But yes, these are optoisolated and DSC controls power stage directly.

thanks for your reply.

[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:
http://www.cnczone.com/forums/showthread.php?t=14477
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:
http://www.cnczone.com/forums/showthread.php?t=14477
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:
http://www.cnczone.com/forums/showpo...&postcount=481

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.