done something wrong, as g-203v onboard mini fuses keep frying.

[Dhaffner]

I had success hooking up motors individually on bench, but didn't run them prolonged. now that they are hooked up on machine, in a couple instances, Ive found my Gecko 203v-drives blacked out on different axis (green power light off). I found they use a small mini fuse.. mouser # 576-9251005 which is 125v-5A. I replaced fuses, but one just blew again. I have an old Shopbot I'm slowly converting...it uses the old high inductance oriental motors...the A6497-9412ktg. for all 4...y, z, and 2 X motors. I think I must have something set up wrong. I'm using a 48V power supply in addition to the centroid provided 24V...the motors are powered with the 48V. I'm including my latest report when the most recent y axis fuse blew. I notice the motors sound pretty rough too. I think Ive missed something...

[Dhaffner]

I only included the fuse number in case it helps others...they're super easy to replace and only like 1$.

[Dhaffner]

I should also point out I have the motors x’s and y set to 20 teeth gears at: .9167 overall turns ratio And the z with 25 teeth gears set to:1.1459 overall turns ratio.

[Richards]

Do you have a drawing or schematic and a photo of how you've wired the G203v drivers, power supply, and stepper motors?

[tblough]

If you are blowing driver fuses, it's most likely something to do with your sriver to motor wiring or an issue with the motors themselves. Very unlikely the Acorn is causing this problem.

Disconnect all of your motors and start back with a single motor. Rewire that completely double checking each wire as you hook it up. Once one motor is working correctly, proceed with another one. Do one motor at a time.

[Dhaffner]

Ill make a schematic of the wiring and post it after my appointment. Thanks very much. I feel close, just gotta figure iut what Ive messed up.

[robtown]

Are you using the DB-25 connector or the header to connect your motors?

I did exactly what you're doing a couple years ago, built a new control box for my old PRT 4896 using the Geckos and those original high inductance motors. I had no problems whatsoever, at least none that weren't self inflicted.

[Dhaffner]

I’m sure this of my own doing….I’m about 60% capable and 40% good guess…sometimes.lol.I corrected the motor to red/white and green/black for windings. I should note…the other drivers follow the same scheme but the two “X” motors are wired together at the db25…and share the same + and - for the #1 and #2 on the geckos at the 48v power supply.

[Dhaffner]

Looking at my own schematic…should power go to grnd… ⏚ instead of v-?

[Richards]

I'm not seeing a current set resistor between terminals 11 and 12 on the G203v. The G203v manual lists the following resistors for the following amps drawn:

"Here are the current set resistor values for motor current in .5A increments. Round the appropriate answer to the nearest 5% resistor value.
a. 1A – 7.8K
b. 1.5A – 12.8K
c. 2A – 18.8K
d. 2.5A – 26.1K
e. 3A – 35.25K
f. 3.5A – 47K
g. 4A – 62.67K
h. 4.5A – 84.6K
i. 5A – 117.5K
j. 5.5A – 172.33K
k. 6A – 282K
l. 6.5A – 611K
m. 7A – OPEN "

Normally, I connect all DC grounds together and I tie chassis ground to DC ground.