MPH-02, MPB-02, MPD-02
Drive Control
6-67
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
The figure below illustrates the functional principle:
S-0-0124,
Standstill
window
S-0-0155,
Friction
compensation
P-0-0444,
Actual value peak
torque limit
P-0-0442/P-0-0443,
Actual value
torque limit pos./neg.
(stationary)
M
cmd
from
acceleration
feedforward
current
limitation
S-0-0092,
Bipolar
torque/force
limit value
P-0-0109,
Torque/force
peak limit
torque/force
command value
from velocity
controller
DF000068v01_en.fh7
S-0-0082/S-0-0083
Torque/force
limit value
positive/negative
Fig. 6-44:
Principle of torque/force limitation
The basic features of torque/force limitation:
•
It is always the lowest value of the torque/force limit values entered in
S-0-0082, S-0-0083, S-0-0092 or P-0-0109 that takes effect.
•
The torque/force limit value effective at the output of the limitation is
displayed in parameter
P-0-0444, Actual value peak torque limit
.
Current Limitation
Note:
The current limitation cannot be parameterized by the user,
but is automatically configured by the drive to protect the
motor and the amplifier.
We basically distinguish the following principles of current limitation:
•
absolute current limitation
(depending on maximum possible peak
currents and continuous currents of motor and drive controller)
•
dynamic peak current limitation
(depending on work load, realized
by motor and amplifier temperature model)
Calculating the maximum values for continuous current and peak current:
S-0-0110,
Amplifier peak
current
S-0-0109,
Motor
peak current
S-0-0112,
Amplifier
nomininal current
S-0-0111,
Motor current at
standstill
P-0-0640,
Cooling type
factor
1,15
P-0-0001,
Switch. frequency
of the power
output stage
P-0-4045,
Max. possible
contin. current
MIN
MIN
P-0-4046,
Effective peak
current
DF000069v01_en.fh7
Fig. 6-45:
Generating the maximum values for continuous current and peak
current
Features
Absolute Current Limitation
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
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Mechanical
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426-5480
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