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General Mach Discussion / Spindle at speed signal
« on: October 22, 2010, 11:57:05 PM »
I am trying to find a way to have mach3 read that the spindle is at the commanded speed before making a cutting move.
Currently I am using the timed pause feature (wait 5 second so you are sure that the spindle is up to speed). What I want is for the machine to proceed with rapid moves while the spindle is accelerating, then wait for the "spindle at speed" signal from the VFD before begining any feed moves. I had this working in EMC2. The current method is very slow. I have to wait the same amount of time whether I choose 200RPM or 8000RPM.
This is a very common feature on VMCs. I have never seen a "real" control that did not have this feature.
I cannot find an example online.
-Wes
Currently I am using the timed pause feature (wait 5 second so you are sure that the spindle is up to speed). What I want is for the machine to proceed with rapid moves while the spindle is accelerating, then wait for the "spindle at speed" signal from the VFD before begining any feed moves. I had this working in EMC2. The current method is very slow. I have to wait the same amount of time whether I choose 200RPM or 8000RPM.
This is a very common feature on VMCs. I have never seen a "real" control that did not have this feature.
I cannot find an example online.
-Wes