If the spindle is starting with the lower speed specified in the Mach4 configuration,
then it sounds like the speed control is working. Just to be sure, please try changing
the minimum speed in the Mach4 configuration to see if it does affect the actual
spindle speed. If it does not, there is likely a problem with the wiring or the
parameter configuration in the VFD.
If it does change, there is likely a Mach4 configuration issue. In this case please
create a "packaged profile" and post it here or send it directly to PMDX for us
to analyze.
You can create a packaged profile using Mach4 by using:
HELP > Support > Create Packaged Profile
.. and save the resulting file somewhere that you can find it to send to us.
This file will contain all configuration information for the Mach4 profile that
you are running at the time it is created.
Steve Stallings
www.PMDX.com