MPH-02, MPB-02, MPD-02
Drive Control
6-7
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Note:
With a value of "0.00%" in parameter P-0-0572 the slip
compensation is switched off.
In the "U/f characteristic" function the respective voltage for the effective
output frequency is calculated from the motor model data.
The form of the characteristic in the basic range of setting, i.e. up to
P-0-4036, Rated motor speed
, is selected with bit 13 in
P-0-0045,
Control word of current controller
:
•
bit 13 = 1
→
square characteristic
•
bit 13 = 0
→
linear characteristic
Note:
The default setting in bit
13 of P-0-0045 is "0" (linear
characteristic).
P-0-0048
P-0-0577
P-0-0532
P-0-0045
motor data
DF000117v01_en.fh7
current
commutation
and PWM
f
out
U/f characteristic
monitoring
current
limitation
loop
oscilla-
tion
damping
IxR
boost
slip
compen-
sation
bit 13
stall pro-
tection
loop
P-0-0045:
control word of current controller
P-0-0048:
effective velocity command value
P-0-0532:
premagnetization factor
P-0-0577:
square characteristic: lowering factor
Fig. 6-8:
Core function "U/f characteristic"
The output signal of the slip compensation is used as the input value for
the U/f characteristic.
With a square characteristic the degree of lowering can be adjusted in the
basic range of setting with the value in parameter
P-0-0577, Square
characteristic: lowering factor
. The value of 100% corresponds to the
original square curve. This lowering factor is reduced as the percentage
value decreases.
Note:
The value "0.00%" in parameter P-0-0577 corresponds to the
linear characteristic.
By means of parameter
P-0-0532, Premagnetization factor
it is possible
to make a subsequent trimming of the machine’s magnetization. This
parameter can be configured in the MDT. If the premagnetization factor is
cyclically transmitted by a higher-level master, it can precontrol the
machine’s magnetization in an appropriate way in the case of an expected
change of load.
By means of parameter
P-0-0573, IxR boost factor
it is possible to
influence the precontrol of the output voltage in a load-depending way.
Note:
With a value of "0.00%" in parameter P-0-0573 the precontrol
is switched off.
U/f Characteristic
IxR Boost
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
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426-5480
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