Actual signals and parameters 201
2609
NOISE SMOOTHING
0, 1 1 0
Enables the noise smoothing function. Noise smoothing distributes the acoustic motor
noise over a range of frequencies instead of a single tonal frequency resulting in lower
peak noise intensity. A random component with an average of 0 Hz is added to the
switching frequency set by parameter 2206 SWITCHING FREQ.
Note: This parameter has no effect if parameter 2206 = 16kHz.
0 = DISABLE
1 = ENABLE
2610
USER DEFINED U1
0 … 120% of U
N
V 1 = 1 V 19% of U
N
Defines the first voltage point of the custom U/f curve at the frequency defined by
parameter 2611 USER DEFINED F1. See section Custom U/f ratio on page 116.
2611
USER DEFINED F1
0.0 … 500.0 Hz 1 = 0.1 Hz 10.0 Hz
Defines the first frequency point of the custom U/f curve.
2612
USER DEFINED U2
0 … 120% of U
N
V 1 = 1 V 38% of U
N
Defines the second voltage point of the custom U/f curve at the frequency defined by
parameter 2613 USER DEFINED F2. See section Custom U/f ratio on page 116.
2613
USER DEFINED F2
0.0 … 500.0 Hz 1 = 0.1 Hz 20.0 Hz
Defines the second frequency point of the custom U/f curve.
2614
USER DEFINED U3
0 … 120% of U
N
V 1 = 1 V 47.5% of
U
N
Defines the third voltage point of the custom U/f curve at the frequency defined by
parameter 2615 USER DEFINED F3. See section Custom U/f ratio on page 116.
2615
USER DEFINED F3
0.0 … 500.0 Hz 1 = 0.1 Hz 25.0 Hz
Defines the third frequency point of the custom U/f curve.
2616
USER DEFINED U4
0 … 120% of U
N
V 1 = 1 V 76% of U
N
Defines the fourth voltage point of the custom U/f curve at the frequency defined by
parameter 2617 USER DEFINED F4. See section Custom U/f ratio on page 116.
2617
USER DEFINED F4
0.0 … 500.0 Hz 1 = 0.1 Hz 40.0 Hz
Defines the fourth frequency point of the custom U/f curve.
2618
FW VOLTA GE
0 … 120% of U
N
V 1 = 1 V 95% of U
N
Defines the voltage of the U/f curve when frequency is equal to or exceeds the motor
nominal frequency (9907 MOTOR NOM FREQ). See section Custom U/f ratio on page
116.
2619
DC STABILISER
Enables or disables the DC voltage stabilizer. The DC stabilizer is used in scalar
control mode to prevent possible voltage oscillations in the drive DC bus caused by
motor load or weak supply network. In case of voltage variation the drive tunes the
frequency reference to stabilize the DC bus voltage and therefore the load torque
oscillation.
0 = DISABLE – Disables DC stabilizer.
1 = ENABLE – Enables DC stabilizer.
Group 26: Motor control
Code Description Range Resolution Default S
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