hi guys,
i owne a 7*12 mini lathe with the sieg spindle board but just cant get a fine working spindle control
i do have:
bob with buffered I/O
seperate power supply units to keep optoisolation
5,09V >2A for the bob
12,01V 1A for the cnc4pc C6
fine working index pulse sensor (also cnc4pc)
i run the C6 with 1000steps/unit, 500units/min, 5us
i get a clear output signal of ~5,8V at mach3 max spindlespeed and drawned it down to 5,59V to exactly match the max poti wiper of the sieg spindle control board.
i connected the C6 output to P1 (poti GND) and P2 (poti Wiper) of my Sieg spindle card and pulled all Poti cables off (P1,P2,P3)
So when i give S1100 for max. spindlespeed of ~1100 i do get my max. spindlespeed of 1100 - properly set Pulley at mach3.
The problem is when i want to thread sumthin with S200 - it gives only real ~120rpm.
The C6 OUT gives 0,92V in that case, which i think is also "nearly" fine - 5,59V /1100 *200 = 1,016V - so im not that far away
My spindle doesnt turn that linear as mach3 wants it to turn, max. speed fits, but nothing else
I tried every ****ing combination up to 25khz, 0us<->15us, replacement bob, high/low signals but i never got fitting speeds :confused:
After AutoCalc Spindle at Mach3 i get the same results in the other way - s200 results in rpm 260 / s500 results in rpm 540 / s1100 results in rpm 1100
Can someone tell me what im doin wrong?
i owne a 7*12 mini lathe with the sieg spindle board but just cant get a fine working spindle control
i do have:
bob with buffered I/O
seperate power supply units to keep optoisolation
5,09V >2A for the bob
12,01V 1A for the cnc4pc C6
fine working index pulse sensor (also cnc4pc)
i run the C6 with 1000steps/unit, 500units/min, 5us
i get a clear output signal of ~5,8V at mach3 max spindlespeed and drawned it down to 5,59V to exactly match the max poti wiper of the sieg spindle control board.
i connected the C6 output to P1 (poti GND) and P2 (poti Wiper) of my Sieg spindle card and pulled all Poti cables off (P1,P2,P3)
So when i give S1100 for max. spindlespeed of ~1100 i do get my max. spindlespeed of 1100 - properly set Pulley at mach3.
The problem is when i want to thread sumthin with S200 - it gives only real ~120rpm.
The C6 OUT gives 0,92V in that case, which i think is also "nearly" fine - 5,59V /1100 *200 = 1,016V - so im not that far away
My spindle doesnt turn that linear as mach3 wants it to turn, max. speed fits, but nothing else
I tried every ****ing combination up to 25khz, 0us<->15us, replacement bob, high/low signals but i never got fitting speeds :confused:
After AutoCalc Spindle at Mach3 i get the same results in the other way - s200 results in rpm 260 / s500 results in rpm 540 / s1100 results in rpm 1100
Can someone tell me what im doin wrong?