HEIDENHAIN TNC 426 PB - Adjust the Holding Moment

6 – 496 HEIDENHAIN Technical Manual TNC 426, TNC 430
9. Adjust the holding moment:
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7 Enter the following test program (static friction in axis Z):
LBL 1
L Z+2 R0 F50
L Z-2 R0 F50
CALL LBL 1/10
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7 Use the integrated oscilloscope to record the actual shaft speed
(ACTUAL RPM) and the nominal current value (I NOMINAL).
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7 Start the program.
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7 With the feed rate override knob, adjust the motor speed to ± 10 rpm
(MP2020.x).
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7 Determine the current (I NOMINAL) in both directions of rotation.
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7 Calculate MP2630.x:
MP2630.x
I NOML
1
I NOML
2
+
2
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