- Joined
- Aug 4, 2015
- Messages
- 291
Got to ask, does your HLV have a coolant pump as well? Some did. Running more than one motor off a VFD is also problematic.
My personal take is getting or building a RPC (rotary phase converter) to run the machine.
Yes, those had a Worthington drive, and they work well. So how ever you go about it, I would use the Worthington drive for speed control over trying to run a VFD for speed control. As far as the two speed motor if you lathe is so equip. If you are dead set on running a VFD you will need to turn off the VFD output before switching speeds from low to high or vise versa. Now if your lathe is wired like my DV-59 that will require you to hit the start button on the cabinet to re-energize the electrical system before the lathe will work again.
Getting into a full rewire to eliminate all that would be difficult but not impossible if you are familiar with industrial control circuits.
I know that the DV-59 I have actually has some fairly complex control circuits that run the motor drive for the Worthington Drive, the brake, and the coollant pump. Even though all of this is lever controlled on the Hardinge, the levers all mechanically control switches in the cabinet to actually route the power.
My personal take is getting or building a RPC (rotary phase converter) to run the machine.
Yes, those had a Worthington drive, and they work well. So how ever you go about it, I would use the Worthington drive for speed control over trying to run a VFD for speed control. As far as the two speed motor if you lathe is so equip. If you are dead set on running a VFD you will need to turn off the VFD output before switching speeds from low to high or vise versa. Now if your lathe is wired like my DV-59 that will require you to hit the start button on the cabinet to re-energize the electrical system before the lathe will work again.
Getting into a full rewire to eliminate all that would be difficult but not impossible if you are familiar with industrial control circuits.
I know that the DV-59 I have actually has some fairly complex control circuits that run the motor drive for the Worthington Drive, the brake, and the coollant pump. Even though all of this is lever controlled on the Hardinge, the levers all mechanically control switches in the cabinet to actually route the power.