HEIDENHAIN iTNC 530 Technical Manual page 506

Speed controller
6 – 262
Define the step function:
7 In MP3411.x, enter the maximum acceleration and start the step by
switching the spindle on.
7 Activate a spindle speed from the highest gear range.
7
With the integrated oscilloscope, record the nominal velocity value
V (NOM RPM), the actual speed value V (ACT RPM), and the nominal
current value (I NOMINAL).
7
Output a step by activating the spindle-on function (M03/M04).
7 Choose the height of the step function for a very low speed so as not to
overload the speed controller, i.e. so that I NOMINAL is not limited.
7 Increase the P factor (MP2500.x) until the system oscillates or no change is
visible. To edit machine parameters, press the MP EDIT soft key in the Set
up menu.
7
Calculate MP2500.x: MP2500.x = MP2500.x · 0.6
HEIDENHAIN Technical Manual iTNC 530