- Joined
- Dec 19, 2013
- Messages
- 73
On going CNC project. I have installed a 3 phase motor and a VFD. I can control the motor speed and thus the spindle speed by turning the dial on the VFD but I want to know the actual speed on the spindle so I can eventually do threading.
I have a proximity sensor that I can rig up so it sends a signal every revolution of the spindle, but where do I send that signal so I can get a readout of actual RPM of the spindle?
I have a controller that has a VFD input for +10, analog in, and ground. But I think this is for controlling the speed of the motor on some proportional basis and not for receiving the signal from the proximity sensor which would allow actual spindle speed to appear in Mach3.
At this point I am not interested in using Mach3 to control spindle speed. (That would be nice but I am already in over my head.) I just want to get an accurate readout of spindle speed.
All suggestions appreciated.
(Leeson motor, VFD is a GS2 from Automation Direct, controller is from Camtronics, lathe is a Grizzly G0602)
Dennis
I have a proximity sensor that I can rig up so it sends a signal every revolution of the spindle, but where do I send that signal so I can get a readout of actual RPM of the spindle?
I have a controller that has a VFD input for +10, analog in, and ground. But I think this is for controlling the speed of the motor on some proportional basis and not for receiving the signal from the proximity sensor which would allow actual spindle speed to appear in Mach3.
At this point I am not interested in using Mach3 to control spindle speed. (That would be nice but I am already in over my head.) I just want to get an accurate readout of spindle speed.
All suggestions appreciated.
(Leeson motor, VFD is a GS2 from Automation Direct, controller is from Camtronics, lathe is a Grizzly G0602)
Dennis