PMDX Forum
General Category => Parallel Port breakout boards, motherboards, and dedicated accessories => Topic started by: courter on December 30, 2022, 10:35:29 AM
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Hi, Two Questions; If I can configure my 107 and Huanyang GT VFD to work in "Run/Direction" mode, can I use Port 1 Pin 14 for something else? On Table 1 (pg 9) of the "PMDX-107 Manual" a reference is made to J8 ("direction determined by J8"), which I can not find? Thanks Edward
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If you do not need to run your spindle in reverse you can set the PMDX-107 to Run/Dir mode (Config switch 3) and do not connect the Dir output of the PMDX-107 to the VFD. This will allow you to use pin 14 for other purposes without disturbing the VFD.
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Thanks for the help. I'm up and running with one glitch? I have a 12000 rpm spindle and the M3S12000 command is spot on(Aout 9.7V)....S10,000 little low (Aout 7.6V)=9,528RPM and progressively lower until ...S6000(Aout 3.3V)=4,128 RPM ...S4000(Aout 1.1)=1,356RPM?
Tuning went good (100% 30%), VFD is responding well.
S6000 command should output 5V. I'm either providing the 107 with a bad signal or its processing a good signal poorly. Happy new Year
Mach3 .062
ESS A-V10-f1
PMDX 125 C
PMDX 107 S39272 D1 All Dip Currently OFF, Aref not used.
Checked and Rechecked AN002 13 August 2012
My instincts are to set up a truth table and run, but my instincts are often bad, Edward
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Resolution, In my setup (above) it appears the Pulley Selection/Min Speed Config must be set at 0 rather than the spindle minimum (AN002 Page 6). Now reads close to M3Sxxx Commands and can be fine tuned with calibration Pot.
Warp9 had a 6 year old 25 page post which mentioned this issue. Thanks to all, Edward
https://warp9td.com/index.php/kunena/7-general-discussion/6442-mach3-ess-pwm-spindle-problem?limitstart=0