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General Mach Discussion / Help to setup non linearity Spindle

« on: June 05, 2017, 12:36:50 PM »

Hi every one i would to connect Pwm Driver Spindle 0 to 10V and set pulley nr 4 from 0 to 17000rpm ratio 1
but i have a strange problem... turn on spindle with command S*********x M3 and read the frequency and is not linear
where i can setup if is possible in to mach3 ? I do not have a feedback from spindle ( closed loop)

Set          Read in to driver display
5000           38
6000           45,6
7000           53,1
8000           60,5
9000           67
10000   75
11000   84
12000   93
13000   103
14000   115
15000   139
16000   171
17000   217

Thank you every one 
Rob