Parameters vacon • 68
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6
P3.1.2.3 Switching Freq 1.5 Varies kHz Varies 601
Increasing the switching
frequency reduces the
capacity of the AC drive. It is
recommended to use a
lower frequency when the
motor cable is long in order
to minimize capacitive cur-
rents in the cable. Motor
noise can also be minimised
using a high switching fre-
quency.
P3.1.2.4 Identification 0 1 0 631
The automatic motor identi-
fication calculates or mea-
sures the motor parameters
that are needed for opti-
mum motor and speed con-
trol.
0 = No action
1 = At standstill
P3.1.2.5 Magnetizing current 0.0 2*IH A 0.0 612
Motor magnetizing current
(no-load current). The val-
ues of the U/f parameters
are identified by the magne-
tizing current if given before
the identification run. If this
value is set to zero, magne-
tizing current will be inter-
nally calculated.
P3.1.2.6 Motor switch 0 1 0 653
Enabling this function pre-
vents the drive from tripping
when the motor switch is
closed and opened e.g.
using flying start.
0 = Disabled
1 = Enabled
P3.1.2.7 Load drooping 0.00 50.00 % 0.00 620
The drooping function
enables speed drop as a
function of load. Drooping
will be defined in percent of
nominal speed at nominal
load.
P3.1.2.8 Load drooping time 0.00 2.00 s 0.00 656
Load drooping is used in
order to achieve a dynamic
speed drooping because of
changing load. This param-
eter defines the time during
which the speed is restored
to the level it was before the
load increase.
P3.1.2.9 Load drooping mode 0 1 0 1534
0 = Normal; Load drooping
factor is constant through
the whole frequency range
1 = Linear removal; Load
drooping is removed linearly
from nominal frequency to
zero frequency
Table 46. Motor control
Code Parameter Min Max Unit Default ID Description
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