Re: [CAD_CAM_EDM_DRO] Testing the new Super Gecko G202

Sure sounds like another great drive! good ole' Mariss really digs deep to
keep us out of trouble! cul brian f.

----- Original Message -----
From: "danmauch" <dmauch@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, June 23, 2005 5:09 PM
Subject: [CAD_CAM_EDM_DRO] Testing the new Super Gecko G202


> I had some time so I assembled, with some modifications, one of
> my Cases that I designed for the G201/G210 . I installed three
> G202's directly to the bottom of the .062 thick 12X10 base plate.
> The G202 is so efficient that you don't need much of a heatsink so
> in this case the bottom plate would be more than adequate but I
> still have a fan for cooling just in case.
> The installation was quite easy but there are some diffrences.
> 1.Terminal 7 is no longer used for output disable. It is marked N/C
> 2. If you want to be able to disable the outputs you use terminal
> 11 and 12 which is also for the current setting resistor. I have a
> front panel spst switch. The three terminal 11 wires are connected
> to one side of the switch with a diode in series with each wire.
> Then only one of the terminal 12 wires is connected to the other
> sideof the switch.
> Now for some real fun. After preliminary checkout everything was
> working just like 3 G201. Next I disconnected a 762 oz in stepper
> motor with power on and the windings engaged. A NO-NO for most
> drives. Then I shut off the power and reconnected the motor and
> checked to make sure the drive was OK IT was. The I disconnected and
> connected ti several times again with no problems. Next I tested
> the short circuit protection of the output by shorting directly from
> A to A/ then B to B/ after the shorts were removed the drive
> continued to run normally. The same results wered noted whjen
> shorting A to B abd B/ to A/.
> Last I dug out some really old stepper motors of questionable
> quality and all ran great with the G202's. I did find one bad motor
> and after replacing it the G202 ran it just fine.
> I recommend the G202's highly.
> If anyone wants to see some pictures of the G202's in my case send
> me an email off line
> Dan Mauch
> Camtronics Inc
> www.camtronics-cnc.com
> www.seanet.com/~dmauch
> low cost stepper motors , cases for gecko drives
>
>
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