Re: [CAD_CAM_EDM_DRO] Gecko G540

Yes, you can use the 24V supply. A higher supply Voltage would probably give
you higher rapid speeds.

Geckodrive provide a XML file so you could use that, or copy the one you have
and modify the copy.

One tip to note is to initially set it up and get it working with the G540
Chrgepump switch in the off position. Makes things simpler. Then, if you want
to use it, remember to set the checkbox "Chargepump on in ESTOP" to on in the
General Config Tab.

If your stepper leads already have a connector on them, consider jut making a
set of short leads that convert from the plug you have to the DB9 needed for
the G540. I did this on my Taig mill.

As to the current set resistor, You need to find one that is close to the
current requirements of the motor. You need 1Kohm per amp. Or you could use
something like this that I sell. The small boards have an adjustable
potentiometer on them, it makes the adjustment simple. Also it is easier to
solder to the PCB rather than the DB9.

http://www.homanndesigns.com/store/index.php?main_page=product_info&cPath=27&products_id=111

Cheers,

Peter

On 18/11/2011 3:02 AM, Chuck Merja wrote:
> Was "Xylotex Pwr Sup replacement"
>
> Well, I bit the bullet and G540 should arrive today, but this brings up MANY
> questions.
> 1- I won't have the 48V supply for a while - can I use the 24V 6.5A
> replacement until the 48 V supply arrives?
> 2- What reconfig am I going to have to do within MACH?
> A - should I copy and rename the old Xylotex minimill file and then use most
> of those settings for the Gecko? Or do I need to start totally anew with a
> config file?
> 3 - under the title of "I don't know what I don't know" - what other
> pitfalls/tasks do I need to cover/learn about in order to make this
> transition (Xylotex to Gecko G540 AND new powersupply)?
> Thanks so much,
>
> Chuck Merja
>
> On 11/16/2011 1:14 AM, Chuck Merja wrote:
>> Well, my initial diagnosis of the power supply might have not been the
>> whole
>> problem. I plugged in a 19V 4.5A laptop power supply that had an open
>> circuit voltage of 19.8 ish and the green light on the power supply went
>> out, and the voltage to the controller was 0. I'm a rank amateur, but I'm
>> thinking that isn't good. So the 24V 6.5A replacement PS I ordered should
>> be here by Fri, but I'm thinking I should somehow test the Xylotex drivers
>> to see if they are any good. Suggestions? Cuz I'd like not to just plug in
>> that new PS and have it come to an early demise.
>>
>> And yes, I'll probably just get a set of Geckos - G540's (with one
>> dissenting vote due to not being able to stop one axis is my current
>> tally)
>> - yes?
>>
>> I'm pretty sure the current steppers are Automation Direct Sure Step, NEMA
>> 23, 276oz-in.
>>
> <http://www.automationdirect.com/adc/Shopping/Catalog/Motion_Control/Stepper
>> _Systems/Motors_-z-_Cables/STP-MTR-23079>
>> Should I get bigger motors too, or try the new driver on these steppers?
>>
>> Thanks, Chuck
> The G-540 is a set of G-251s in a box. It is 4 axis. You won't regret
> this decision, but you will want a 48V power supply.
> The current steppers should be fine.
> Do not connect or disconnect anything with power to your drivers,
> especially that Xylotex. It takes a while for the voltage to dissipate,
> make sure it's gone with a voltmeter.
> Your new supply should have short protection. If so, it shouldn't be
> damaged if the Xylotex is bad. When you apply power, flip the switch
> quickly on and back off. If there is a problem, hopefully the short
> duration will mitigate any damage.
>

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