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Messages - bill anderson

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General Discussion / Re: PMDX Configuration with G540 and VFD
« on: February 11, 2017, 05:27:20 PM »
I took a piece of solder wick and wrapped around the DB25 shell of the PMDX-411 and tightened down the connector to the G540 that has it working for now. there was no voltage between the computer ground and the machine ground and "0" resistance. Since I'm also planning on LinuxCNC and a 5i25 card I'd sure like to know about a permanent fix.

bill a.

2
General Discussion / Re: PMDX Configuration with G540 and VFD
« on: February 11, 2017, 05:06:25 PM »
I've tried rerouting wiring, tightening grounds, adding RF chokes, nothing seems to work. I measured 1.58->1.71 VAC between the DB25 shell of the PMDX-411 and computer ground is that normal?

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General Discussion / Re: PMDX Configuration with G540 and VFD
« on: February 10, 2017, 11:30:22 PM »
Using cycle start allows the commands to talk to Mach4, it still fails with the same error and the same conditions when the VFD is powered. Where should I look to shield from noise? I was using a USB smoothstepper with Mach3 and it didn't seem to have any noise problems related to the VFD, just a whole series of other problems relating to FDTI_write and running out of data.

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General Discussion / Re: PMDX Configuration with G540 and VFD
« on: February 10, 2017, 09:53:15 PM »
That seemed to fix one problem, it seems to talk to the vfd now. I just have no control from the MDI line it ignores the M03S400 command. It will start the spindle moving when I hit the onscreen button (m03) on the right lower side of the screen, but it stops almost immediately. When I hit the button (M05) again to stop the spindle it faults with an error condition "ERROR Could not disable the PMDX - SmartBOB-USB, cannot communicate with device". I have to disconnect the USB to the PMDX 411, close out Mach4, reconnect the 411 and restart Mach4 again in order to try again. I reinstalled the PMDX firmware through the update firmware button on the SmartBOB configuration page.

Hopefully you can help or point me in the right direction

I have attached my machine.ini file if that may help


Thanks
bill a.

5
General Discussion / PMDX Configuration with G540 and VFD
« on: February 01, 2017, 09:15:18 PM »
I am looking for documentation or an explanation of what I need to do to configure PWM spindle control with Mach 4 Industrial --> PMDX 411 --> G540  to my VFD. The VFD uses Gecko G540 Output 1 (DB25 pin 17) --> FWD Run  and Output 2 (DB25 pin 1)--> REV Run

Thanks
bill a.

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