HAAS VF1 retrofit
26 Jul 2014 07:49 #49153
by sspeed33317
Replied by sspeed33317 on topic HAAS VF1 retrofit
OK, i will try to work on getting 2.6 running
I figure modbus would be better to use because I need to
get the spindle to orient for tool change, maybe i dont need it..
the way I read in the HAAS manual, for orient
Spindle set at orient speed, as it triggers the orient pin it goes into coast mode
when the pin drops into the detent there is a switch that lets the control know it
dropped and also commands a stop signal to the VFD, so until that pin raises
back out no matter what the VFD will not move the spindle, giving a spindle lock fault
If i can do that without using Modbus i'm all for it
I figure modbus would be better to use because I need to
get the spindle to orient for tool change, maybe i dont need it..
the way I read in the HAAS manual, for orient
Spindle set at orient speed, as it triggers the orient pin it goes into coast mode
when the pin drops into the detent there is a switch that lets the control know it
dropped and also commands a stop signal to the VFD, so until that pin raises
back out no matter what the VFD will not move the spindle, giving a spindle lock fault
If i can do that without using Modbus i'm all for it
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26 Jul 2014 08:07 #49154
by sspeed33317
Replied by sspeed33317 on topic HAAS VF1 retrofit
ok, just ordered the mesa boards..
might have to wait on ordering a VFD for a week or two.. rent is coming due
might have to wait on ordering a VFD for a week or two.. rent is coming due
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26 Jul 2014 08:13 - 26 Jul 2014 08:14 #49155
by andypugh
You can do all that in HAL. I would probably write a custom comp (because I can, and it's fun) but I can actually see it being easy enough in ordinary HAL.
Consider, this basically comes down to the VFD command voltage either being (scaled) spindle speed request, or a small slow-speed rotate, or zero.
A "mux" can do that, and mux8 has 3 inputs.
www.linuxcnc.org/docs/2.6/html/man/man9/mux8.9.html
If we say that sel0 is spindle-on, sel1 is orient, and sel2 is "pin engaged"
Then draw up a table.
So,
Does that make sense?
Replied by andypugh on topic HAAS VF1 retrofit
It shouldn't be hard.OK, i will try to work on getting 2.6 running
Spindle set at orient speed, as it triggers the orient pin it goes into coast mode
when the pin drops into the detent there is a switch that lets the control know it
dropped and also commands a stop signal to the VFD, so until that pin raises
back out no matter what the VFD will not move the spindle, giving a spindle lock fault
If i can do that without using Modbus i'm all for it
You can do all that in HAL. I would probably write a custom comp (because I can, and it's fun) but I can actually see it being easy enough in ordinary HAL.
Consider, this basically comes down to the VFD command voltage either being (scaled) spindle speed request, or a small slow-speed rotate, or zero.
A "mux" can do that, and mux8 has 3 inputs.
www.linuxcnc.org/docs/2.6/html/man/man9/mux8.9.html
If we say that sel0 is spindle-on, sel1 is orient, and sel2 is "pin engaged"
Then draw up a table.
Sel0 Sel1 Sel2 What we want
0 0 0 0
0 0 1 0
0 1 0 small constant speed
0 1 1 0
1 0 0 spindle command
1 0 1 0
1 1 0 small constant speed
1 1 1 0, oh we so want zero then.So,
setp mux8.0.in0 0
setp mux8.0.in1 0
setp mux8.0.in2 0.01
setp mux8.0.in3 0
# setp mux8.0.in4 0 this one is different
setp mux8.0.in5 0
setp mux8.0.in6 0.01
setp mux8.0.in7 0
net motion.spindle-speed-out mux8.0.in4Does that make sense?
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