6 – 510 HEIDENHAIN Technical Manual TNC 426, TNC 430
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77
7 In MP3412.0, enter a factor for MP3411.x that becomes effective in the
braking ramp with M05. It is the electrical current limit that is braked.
In the TAPPING and SPINDLE ORIENTATION modes, I NOMINAL must not
reach the limit for acceleration:
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7 In MP3412.x, enter a factor for MP3411.x for these operating modes.
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7 With MP3415.x, specify an individual overshoot behavior for every spindle
operating mode. Adapt the nominal value trace to the actual trace.
Checking the direction of rotation
You can check the direction of rotation of the spindle when M03 is output. If
the spindle does not rotate in clockwise direction:
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77
7 Modify MP3130.
Position controller The position control loop of the spindle is closed only during the spindle
orientation:
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7 Close the position control loop of the spindle. (See "Oriented Spindle Stop”
on page 6 – 201).
• If the error message “Nominal speed value S too high” appears, you must
modify MP3140.
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77
7 Optimize the k
v
factor (MP3440.x for each gear range.
A TOOL CALL must be run to transfer the modified gear-specific MPs .
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