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  #1  
Old Mon 26 August 2013, 15:20
Mrayhursh
Just call me: Hurshy
 
Riverview, Florida
United States of America
Gecko G203v Resitor Ohm Value

Would someone please check my math.
I am using KL34H280-45-8A stepper motors connected in Bipolar(parallel)
Its rated DC Amps is 6.3 Amps

Resistance = 47 * current / (7 - Rated Current)
= 47 * 6.3 / (7 - 6.3 )
= 296.1 / .7
= 423 Kilo Ohm
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  #2  
Old Tue 27 August 2013, 02:13
Richards
Just call me: Mike
 
South Jordan, UT
United States of America
Your math is correct. RadioShack sells a 390k resistor and a 470k resistor. Either would work. Many electronic part suppliers also carry a 430k resistor, which would be even better. Just remember that the higher the value, the more current allowed and the hotter the motor. If the 430k resistor is not available in your area, I would suggest that you use a 390k resistor. (Even going as low as 282k will still let the drive pull 6A.)
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  #3  
Old Tue 27 August 2013, 09:32
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
I have those (430K) and will send you 4 if you cant source locally - I bought 100
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  #4  
Old Sun 01 September 2013, 18:28
Mrayhursh
Just call me: Hurshy
 
Riverview, Florida
United States of America
Gecko G203V

Thanks for the offer Metalhead.
I went to Radio Shack and bought an assortment and have tried them all.
How do you know if the G203v is working. I took apart the PMDX-134 and removed the aluminum cover from the Gecko. I see it has several LEDs on the circuit board, but none of them light up. The green LED on the 134 is lit so I know that I have voltage. I took a reading across one of the load resistors and it did not read a voltage. Not sure if you can read voltage in that manner. I went to the section of the manual concerning Testing and did all the needed changing of DIP switches. The PMDX-126 did exactly what the manual stated it would do. LEDs all flashed in the correct order but the G203v did not do a thing and neither did the stepper motors. I am obviously missing something. Anyone have any ideas
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  #5  
Old Sun 01 September 2013, 22:16
Tom Ayres
Just call me: Tom #117
 
Bassett (VA)
United States of America
Mike can you post a picture of the actual connections you have to the geckos for us to see again. We need to see if you have power from your supply connected correctly. Thanks

Last edited by Tom Ayres; Sun 01 September 2013 at 22:18..
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  #6  
Old Sun 01 September 2013, 22:25
Mrayhursh
Just call me: Hurshy
 
Riverview, Florida
United States of America
I will have it in ten minutes

ok 10 min
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  #7  
Old Sun 01 September 2013, 22:53
Mrayhursh
Just call me: Hurshy
 
Riverview, Florida
United States of America
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  #8  
Old Sun 01 September 2013, 22:54
Mrayhursh
Just call me: Hurshy
 
Riverview, Florida
United States of America
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  #9  
Old Sun 01 September 2013, 22:54
Mrayhursh
Just call me: Hurshy
 
Riverview, Florida
United States of America
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