Vacon NX series - Page 62

Table 20: Motor control parameters, G2.6
Index Parameter Min Max Unit Default Cust ID Description
P2.6.7 *
U/f curve midpoint
voltage
0.00 100.00 % 100.00 605
If the value of
P2.6.3 is program-
mable, this param-
eter gives the mid-
dle point frequency
of the curve.
P2.6.8 *
Output voltage at
zero frequency
0.00 40.00 % Varies 606
This parameter
gives the zero fre-
quency voltage of
the U/f curve. The
default value is dif-
ferent for different
unit sizes.
P2.6.9
Switching fre-
quency
1.0 Varies kHz Varies 601
If you increase the
switching fre-
quency, the
capacity of the AC
drive reduces. To
reduce capacitive
currents in the
motor cable, when
the cable is long,
we recommend
that you use a low
switching fre-
quency. To reduce
the motor noise,
use a high switch-
ing frequency.
P2.6.10
Overvoltage con-
troller
0 2 1 607
0 = Not used
1 = Used (no
ramping)
2 = Used (ramping
P2.6.11
Undervoltage con-
troller
0 1 1 608
0 = Not used
1 = Used
P2.6.12 Load drooping 0.00 100.00 % 0.00 620
The function ena-
bles a speed drop
as a function of
load. The load
drooping is given
as a percentage of
the nominal speed
at a nominal load.
VACON · 62 LOCAL/REMOTE CONTROL APPLICATION
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