Huanyang VFD inverter modbus base frequency

To what ever frequency you want as a limit. (Which may or may not be the motors rated freq.)

@Seb I think for completeness it would be good to set PD004 independently, although most people will probably set PD004 & PD005 to the same value.
The base frequency and voltage parameters are used by the vfd to set a ratio according to a set pattern in the firmware which will produce the rated torque and motor flux. Its possible to use a motor outside its voltage and frequecy parameter set for different torque requirements if you have the ability to "tune" these values.

I also noticed that PD143 number of motor poles is also missing, which would be need to ensure the correct speed of a motor.

I added --base-freq and --motor-poles in a test branch named "2.7-hy-vfd-base-freq". I no longer have a Huanyang VFD to test this with, so please test it and let me know if it works, and if it does what you expect.

To test it you can either clone the git repo (at git.linuxcnc.org or at github.com/linuxcnc) and build the branch for run-in-place, or you can wait for the buildbot to build a debian package for you. Since these new hy-vfd features are on an experimental branch, the debs have to be downloaded and installed manually from our "scratch" archive. Let me know if you want help with either of these approaches.

@Seb Thank you.

I'll try to test this early next week as i'm not at my workshop just now.

I've not tried either run-in-place or installed manually. I'll follow the instructions at linuxcnc.org/docs/devel/html/code/building-linuxcnc.html and see how it goes.

@Seb I downloaded and installed the buildbot.linuxcnc.org/dists/wheezy/scrat...req~4e66ee1_i386.deb file and can see the Base ferquency and motor poles in the Hal meter ok.

Can the value be written to the VFD from Hal like the other command strings used to setup the inverter, my custom.hal file uses this command string Is there a command for use with the base frequency and motor poles?

Thanks for testing!

You can set the base frequency from the command line with --base-frequency or -B, and motor poles with --motor-poles or -P .