[scadvice]

I have an older Sharp ser 2 knee mill with a ProtoTRAK Plus 2 axis control that’s been setting in the corner for some time. I decided to turn it on today and everything comes on but when I try to jog just the X axis both the X and the Y move at the same time about 2 inches then I get a Y axis fault error!

Ok…so I hit the “restore” button and hold down the jog button again until it is in jog mode. This time I press the Y axis button and again both the Y and X axis move about two inches at the same time and the now the X axis gets a fault error!?

I’m not that knowledgeable about this control so if anyone out there is, can you tell me what’s going on here? Why are both axis moving?

Steve

[scadvice]

... the moral of the story is be sure to mark you x and y cable plugs, because if you unplug and then happen to plug them in opposite...the results are my first post. (wedge)

Steve

[DMF_TomB]

older prototrak plus uses trav-a-dial encoders, a type of fine tooth gear wheel in contact with side of table or saddle to register movement
.
for example if encoder wheel is jammed with a metal chip it registers no movement and control send full power to servo to move.
.
i have broken a few end mills before learning about the seal kit for keeping trav-a-dial clean that needs changing every so often.
.
so close loop monitors movement but if it malfunctions you could get over travel

[n174k]

FYI

We have a 3 axis package of drives and Trav-a-dial units removed from a Bridgeport during retrofit.


Del