6 – 508 HEIDENHAIN Technical Manual TNC 426, TNC 430
7
77
7 Increase the I factor (MP2511) until you see one overshoot followed by a
slight undershoot.
7
77
7 Output the step with maximum shaft speed. I NOMINAL is within the
limitation during acceleration. I NOMINAL must not oscillate after reaching
the maximum speed. If I NOMINAL oscillates:
• Reduce MP2501 and MP2511 evenly until the overshoots are minimized.
I NOMINAL oscillating
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