Setting Up My PM935 Mill

[Highpower]

(09-11-2015, 08:22 PM)EdK Wrote: Tom,

You can set the startup acceleration and deceleration time in seconds.

Yup. If I set the accel/decel time too low on my lathe it will smoke the drive belt. (Same Hitachi SJ-200 VFD that Ed has.) The 2HP motor reaches full speed in a fraction of a second, but the weight and mass of the drive train cannot - so something has to give. (Major belt squeal.) It puts a lot of unneeded strain on the machine by trying to start and stop too quickly. But you can do it easily with a VFD if you really want to.



Not knowing any better at the time, I installed a RPC for my mill when I got it. I could have bought TWO really nice VFD's for the same money, but hadn't learned about them yet.