I am using the vari-speed head, so I’m already in the high range and running at minimum speed. Unfortunately I can’t tune the VFD ramp down to be optimum for low speed because at high speed it overloads (due to the increased inertia). And so far as I know my Hitachi VFD can only ramp down in a fixed time period. Thanks though!
> On Jul 20, 2020, at 2:39 PM, Scott Harwell via Emc-users > <emc-users@lists.sourceforge.net> wrote: > > Do you have a 2 speed gear box? If so try tapping in high range with lower > spindle (motor) speed. This will give you a much better ramp. > > Scott > > On Monday, July 20, 2020, 10:00:14 AM CDT, Matthew Herd > <herd.m...@gmail.com> wrote: > > Thanks for the input Jon, Andy, and Scott. Unfortunately, it already counts > positive in the clockwise direction, so that’s not it. I’ll go through Jon’s > list of suggestions step by step when I get back to the machine in a few days > and let you know how it goes. I also realized that a spindle braking > resistor will be necessary because the G33.1 motion doesn’t engage the > mechanical brake on deceleration. That was something I hadn’t accounted for, > but I have one on order now. > > Matt > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
