107 Pin Options

[courter]

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

[Steve Stallings]

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.

[courter]

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

[courter]

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