Machine Data; Optimization Of Proportional Gain Of Speed Controller; Optimization Of Integral-Action Component (Reset Time) Of Speed Controller - Siemens SINUMERIK 840C Installation Instructions Manual

08.96
12.33.2.1
MD 1001:
MD 1004:
MD 1406:
MD 1407:
MD 1408:
MD 1409:
MD 1410:
MD 1411:
MD 1412:
MD 1413:
MD 1414:
MD 1415:
MD 1416:
MD 1421:
MD 1665:
12.33.2.2
The proportional gain is optimized as the first step in optimizing the speed controller. For this
purpose, MD 1409: Reset time speed controller is set to 500 ms, effectively deactivating the
integral-action component. The proportional component is then incremented until resonance
points in the system are reached (motor begins to whistle). The P gain which is determined by
this method must then be multiplied by a factor of 0.5. The product is then the start value for
the first frequency response measurement.
12.33.2.3
After the proportional gain has been determined, the reset time of the speed controller is
decreased until the amplitude response begins to rise above the 0 dB line. An increase over
the line of 3 dB is generally permitted. A value of < 20 ms is the target guide value for the
reset time.
© Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
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Machine data

Speed controller clock cycle
Configuration control structure
Speed controller type
P gain speed controller
P gain upper adaptation speed
Reset time speed controller
Reset time upper adaptation speed
Lower adaptation speed
Upper adaptation speed
Select adaptation speed controller
Natural frequency reference model speed
Damping reference model speed
Symmetrizing reference model speed
Time constant integrator feedback
Long-time factor IPO/NCONT cycle for ramp generator

Optimization of proportional gain of speed controller

Optimization of integral-action component (reset time) of
speed controller
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12 Functional Descriptions
12.33.2 Optimization of speed controller
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