The Craftmans Shop > New from Old
The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
seadog:
Well done that man :headbang:
Pete.:
RTFM failure :D
Well done Andrew!
PekkaNF:
Very good job!
Interestin questions is why the servo amlifier had wrong parameter to start with?
Another interesting thing is what happens when you add inertia (large piece on the chuck). Will it overshoot more? In theorio it should not, because of the closed loop, but this "creep mode" sounds a little sensitive.
Pekka
awemawson:
Thanks Pekka,
Yes very odd that just that one parameter on the Mentor was changed, and to do so you have to go through a procedure of setting other parameters to special codes. I very much doubt that the EEPROM had a one bit hissy fit so VERY puzzling.
Servo action seems pretty powerful now that the gain is back up to reasonable figures - I've tried stopping it by hand as it's on it's way to set point, and it isn't possible (and I have big hands!!!)
But . . . life is full of mysteries . . . such as what's happened to poor old PK, who seems to have vanished :bugeye:
cnc-it:
Perhaps the machine was supplied without the c axis option..ie. the parameter turned off in the Mentor . If the customer requested the c axis it would be an easy fix.. Beaver charges £££ to simply alter a parameter..I know I'm being cynical but this type of thing does happen especially on the Japanese machine tools!!
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