Re: [CAD_CAM_EDM_DRO] Re: Gecko G201 and Drive Current ?

Mariss,
Thanks for the feedback, that was the kind of info I was looking for.
1) Jumper for Low Current Mode is ON meaning Low Current Mode is not enabled.
2) Resistor is 120K
3) Voltage measured across 120K is 12.59
4) I'll do the AC amp meter tomorrow. I have to reprogram my PIC controller for that.

Best Regards
Hans W
|

"Mariss Freimanis " wrote:

> Hans,
>
> You can put an ammeter in series with one of the windings. Use a
> battery powered multimeter set to AC amps and step the drive at 240
> full steps per second (2.4 kHz). The meter should read 3.5A RMS (5A
> peak).
>
> Make sure the drive is not set to the low current range on the option
> jumper block. Make sure your resistor is 120K (brown, red, yellow) by
> measuring it; it could be 12K instead (brown, red, orange).
>
> The "in-circuit" voltage across the current set resistor should be
> about 12VDC for a 5A phase current.
>
> Mariss
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Hans Wedemeyer <xyz@h...>
> wrote:
> > Here's my setup.
> > Gecko G201 and PACSI H32 Series motor parallel wired to take 5.6
> Amps.
> > Gecko has a 120K Current set resistor this should be a 5 AMP
> setting.
> > DC Supply 36 Volts able to supply Max 9 Amps.
> > Length of cable from Supply to Motor 3 feet. 14 Gauge Wire .
> > 15000uF Cap. at the Gecko module.
> >
> > I did not get the power I expected. This motor is rate at 445oz-in
> and the project was calculated to
> > need about 160oz-in.
> >
> > When it failed I started to investigate. First I used a clamp on
> Amp meter on the Plus Output lead of the PSU
> > and started the motor. It read 1 Amp ! I know the reading is
> integrated, but I really did expect it to show at least 2-3 Amps.
> >
> > This makes me suspect the Gecko.
> >
> > Does anyone have a good method to confirm the Gecko really is
> switching these windings at 5 Amps ?
> > I have equipemnt to test... just tell me how to test this :-)
> >
> > Thanks in advance.
> > Hans Wedemeyer
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@..., timg@...
> Moderator: pentam@... indigo_red@... [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/