Viper servo drive overview

[Larken]

Welcome to the new forum for the Viper servo drive.
Its available in two models
Viper 100
80 volt @ 20 amps

and
Viper 200
180 volt @20 amps

These drives are loaded with the features you need to control cnc routers, mills and lathes etc.

For more info on Larken's servo drives check them out on the website
http://www.larkencnc.com/viper/index.shtml

Larry kenny

[turmite]

Hi Larry,

Good looking product. I would like to offer a little bit of gentle advice!

Your website is somewhat difficult to navigate. If all pages were vertical it would be much faster to read everything. I don't know if it's just my pc, but I had to navigate both vertical and full page horisontal to get all the info.

I also noticed you posted about customers with Mach giving feedback. Would it be possible to get a little more detail.....since I use Mach?

Mike

[Larken]

Thanks, i will check that . It should be no more than 800 pixels wide.

The customer manufactures cnc routers and Lasers. They commented that they could run faster and smoother with the viper than the other 2 popular servo drives.
One reason is because on the other drives they overshoot when the Derivative is increased to settle the motor. The viper's enhanced PID control settles without overshooting. This makes it follow Mach2's contouring more accuratly and you can run faster.

[turmite]

Thanks for the info. I got your pm as well. I currently am using steppers but my next machine will likely have servos on it. I hear so many good things about speed,smoothness etc.

Mike

[DennisCNC]

Will the motor runaway if the encoder signal is lost?

[jamma]

Very interesting product. I'm fixing a broken Bridgeport clone retrofit that has a 115VDC power supply. The old drives are shot, so I was thinking of trashing everything and setting up a 80V Gecko-based system. Your 200V viper would simplify my job a lot, although the parts cost would actually be more expensive ($239 x 3 = $717 vs $114 x 3 + $150 for PS = $492).

I like that it can use single or differential encoders, and am intrigued by the storage of multiple motor configurations. I've dreamt of building one controller box for a mill, lathe, & router (since in a garage setup like mine, you only have one machine active at a time) with a selectable switch on the front for the appropriate machine. The multiple motor config makes this possible (although still not simple - lots of relays required).

Have you ever used these drives in conjuction with a Geckodrive G100 motion controller?

[faststeve]

I'm setting up Viper servo's on my mill. They are working real well. Are they size 34 or 42 motors on your mill ?

[Larken]

Will the motor runaway if the encoder signal is lost?

No, it won't, Ive added that feature in the latest version.

It also has current protection to protect the drives incase you crash into a hard stop.

[Kelinginc]

The KL34-150-90 Servo Motor is working good with Viper servo drive.
If you are looking for the Servo Motor, pls check
www. http://www.kelinginc.net/ServoMotor.html

[N4NV]

Will the Viper drive run a DC brushless motor? How much power is available for the encoder? (the Gecko drive is limited to 50mA).

Thanks

Vince

[Larken]

Will the Viper drive run a DC brushless motor? How much power is available for the encoder? (the Gecko drive is limited to 50mA).

No, just Brushed motors for now.
The encoder power has a separate 7805 regulator, so it can supply as high as necessary.

[bcromwell]

Have you tested your drives with the Geckodrive G100 motion controller? I would love to use mach3 + the G100 + Viper drives.