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
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
