
6-4 Drive Control MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Open-loop U/f motor control is characterized by the following features or
core functions:
• monitoring and limitation of the maximum stator frequency change
that results from the command velocity change
• stall protection loop (PI loop that can be optionally activated to
prevent breakdown of the machine when the torque limits are attained)
• slip compensation (feedforward of estimated slip of the machine by
means of slip compensation factor)
• calculation of output voltage by means of a U/f characteristic based
on motor model data
• subsequent trimming of magnetization via premagnetization factor, as
well as linear or square characteristic to be selected
• IxR boost (adjustable load-dependent feedforward of the output
voltage due to the voltage drop on the motor winding resistance)
• oscillation damping (adjustable load-dependent feedforward to
prevent velocity oscillations in the partial load and idling ranges)
• current limitation loop to protect the output stage of the drive
controller
• velocity search mode of a coasting machine after switching drive
enable on (can be set for the preset rotational direction or both
rotational directions)
• acceptance of the limitation of the available peak current by current
limitation loop
• user-side torque/force limitation via stall protection loop
• S-0-0040, Velocity feedback value
• S-0-0106, Current loop proportional gain 1
• S-0-0107, Current loop integral action time 1
• P-0-0043, Torque-generating current, actual value
• P-0-0044, Flux-generating current, actual value
• P-0-0045, Control word of current controller
• P-0-0046, Status word of current controller
• P-0-0048, Effective velocity command value
• P-0-0063, Torque-generating voltage, actual value
• P-0-0064, Flux-generating voltage, actual value
• P-0-0065, Absolute voltage value, actual value
• P-0-0440, Actual output current value (absolute value)
• P-0-0442, Actual value torque limit positive (stationary)
• P-0-0443, Actual value torque limit negative (stationary)
• P-0-0532, Premagnetization factor
• P-0-0568, Voltage boost factor
• P-0-0569, Maximum stator frequency change
• P-0-0570, Stall protection loop proportional gain
• P-0-0571, Stall protection loop integral action time
• P-0-0572, Slip compensation factor
• P-0-0573, IxR boost factor
• P-0-0574, Oscillation damping factor
• P-0-0575, Search mode: search current factor
Features
Pertinent Parameters
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