Motors not turning

[Harry-O]

Upgrading new 4 axis cnc Router old setup died ,Replaced board with Acorn free version. Wired w gheco 203v drivers, 48 volt ps,running 4 960 oz/in stepper motors, dual motors x-axis. Tried to run setup w and w/o siter brd PMDX 134 with x-axis not connected ,no motor s running on y axis or z axis. Also ran Ping test for both computer(supplied by Centroid) and acorn. Report file attached

[cncsnw]

Do you mean to say that you are able to move the X axis motor (or motors?) through the CNC12 software and Acorn board?

What is a "siter brd"?

[cnckeith]

viewtopic.php?f=60&t=2077

search 203v

[Richards]

The PMDX-134 is not needed with an Acorn. The Acorn controls all signals to the motors. I've used Gecko G203v drivers with my Acorn. I used a DB-25 breakout board to make wiring easy. I did NOT use the Centroid schematic for the G203v. That schematic shows the G203v connected to the screw terminals. I connected DB-25 pin 2 to Step, DB-25 pin 3 to Direction, and DB-25 pin 18 to Common. (Pins 18-25 are all connected to GND, so any of those pins can be used as Common.) I did NOT connect the G203v's Disable pin. If the Disable is connected, the drive will disable the motor. Power, Stepper motor connections, and a current set resistor were all wired according to the G203v manual from Geckodrive.

It's been a while since I tested the G203v, so I don't remember whether I had to invert the signals in the Wizard, or whether I used the normal (non-inverted) setting. In any case, the stepper worked as expected

[Harry-O]

Richards » Tue Sep 29, 2020 6:34 pm

"The PMDX-134 is not needed with an Acorn. The Acorn controls all signals to the motors. I've used Gecko G203v drivers with my Acorn. I used a DB-25 breakout board to make wiring easy. I did NOT use the Centroid schematic for the G203v. That schematic shows the G203v connected to the screw terminals. I connected DB-25 pin 2 to Step, DB-25 pin 3 to Direction, and DB-25 pin 18 to Common. (Pins 18-25 are all connected to GND, so any of those pins can be used as Common.) I did NOT connect the G203v's Disable pin. If the Disable is connected, the drive will disable the motor. Power, Stepper motor connections, and a current set resistor were all wired according to the G203v manual from Geckodrive.

It's been a while since I tested the G203v, so I don't remember whether I had to invert the signals in the Wizard, or whether I used the normal (non-inverted) setting. In any case, the stepper worked as expected"

Richard I only used PMDX 134 to help save wirering at first , but then went to wire from screw terminals direct to each driver . Still no motor turning, even though dros running on cnc12. I should say that I started this a begining of summer then had to go in for major surgery a month ago with 2 month recovery needed I'm only just starting to get back on my feet. I can only be on feet for about 1 hour a day. All you say about driver disable is correct its not needed I've built 2 other controllers without using it. Tomorow I will go back and rewire motors, I also upgraded to pro version and need to get that done to see if moters finaly turn with motor pairing being used for x axis gantry.I'll post what happens thanks Richard.

[Harry-O]

by cnckeith » Tue Sep 29, 2020 4:03 pm

viewtopic.php?f=60&t=2077

search 203v
cnckeith I did attach report but i'm 68 year old tradesman retired Did I do that report correctly ? I'm not the best with computers still learning a lot about subject. my strong point is fabbing machines. Electronics is poor at best but starting to get it .Thanks Keith

[cnckeith]

post photos of your wiring that would help alot, and screen shots of your wizard settings.

[martyscncgarage]

Harry,
Get a DB25 breakout board from Amazon and try and connect them to it. That is what Richard is referring to above with his connections.

Connector Db25 D-sub Male Plug 25-pin Port Terminal Breakout PCB Board

Learn more: https://www.amazon.com/dp/B073RG3GG6/re ... DFbEX2QFBN
Sent from Mail for Windows 10

[Richards]

Here are three photos that show how easy it is to connect a G203V to the Acorn. The top photo shows the G203v and its connections. Starting from the Power Ground connection, White/Blue=Power Ground, Blue= +24VDC, Black=Motor Phase-A, Yellow=Motor /Phase-A, Red=Motor Phase-B, White=Motor /Phase-B, Disable=NOT CONNECTED, Green=Direction, Yellow=Step, Black=Ground, Current limiting resistor, other end of Current limiting resistor.

The DB-25 photo shows Yellow=Pin 2 (Step), Green=Pin 3 (Direction, and Black=Pin 25 (Ground).

The bottom photo shows the G203v, DIN rail mounted terminal blocks for easy configuration, and an Oriental Motors PK268-2AA stepper.

In Wizard, I set the steps to 100,000, pulses per revolution to 2,000 to match the G203v. I used the virtual control panel to test the G203v and motor. It worked, including direction reversal.

(Sorry about all of the shadows. I hope that you can tell the difference between the wires and the shadows. PLEASE be aware that there is NO wire connected to the G203v's disable input. What looks like a black wire is a shadow.)

[cnckeith]

M.R. thanks for that! good stuff.


fyi..here is the "gear we use but don't sell page" with the DB25 breakout boards and other good stuff.
https://www.centroidcnc.com/centroid_di ... _gear.html