Well I can't explain this but here is what works. I set parameter 144 to 3000 based on someones comment I found online. Cycled power and checked and it was still 20% high. Set the ini file to .8 and checked the speed and it was 20% low. set the ini file to 1.0 and the speeds are within a couple percent as they should be. It looks like parameter 144 should be 3000 for the proper speeds at 60 cycles.
Are you passing a value to the component for P144, or setting a value in HAL?
The calculation seems a little complex, in that you can set the HAL pin or pass a parameter, and if you do neither the component will read it from the drive.
I just set the parameters via the op interface on the drive but thanks for showing me where the source for the hy_vfd is. interestingly the return value for Param 144 is 24000 (as it should be) even though the setting via the op interface is 3000. Haven't been able to figure out why yet.
Gentlemen,
I am pretty sure I have figured out what is wrong. I found a thread about missing RS485 chips on MACH support. I checked and I have no chip in my vfd. I ordered some and will let you all know after I install it.
Thanks for all your efforts
Well, the driver has been updated to allow setting of arbitrary registers from the command-line.
(I added this for my own convenience as I need lifting equipment to move my lathe to access the VFD front panel)
Is it still true that newer GT series drives aren’t supported? I am getting valid communication with the device according to debug mode, but the device is simply replying that it can’t accept the register write command we are sending, near I can tell.
