ABB ACS150 - Select

Actual signals and parameters
90
1 = ON Active
2603 IR COMP VOLT Defines the output voltage boost at zero speed (IR compensation). The
function is useful in applications with high break-away torque. To prevent
overheating, set IR compensation voltage as low as possible.
The figure below illustrates the IR compensation.
Type
dependent
0.0…100.0 V Voltage boost
2604 IR COMP FREQ Defines the frequency at which the IR compensation is 0 V. See the figure for
parameter 2603 IR COMP VOLT.
80
0...100% Value in percent of the motor frequency
2605 U/F RATIO Selects the voltage to frequency (U/f) ratio below the field weakening point. 1 = LINEAR
1 = LINEAR Linear ratio for constant torque applications
2 = SQUARED Squared ratio for centrifugal pump and fan applications. With squared U/f
ratio the noise level is lower for most operating frequencies.
2606 SWITCHING FREQ Defines the switching frequency of the drive. Higher switching frequency
results in lower acoustic noise. See also parameter 2607 SWITCH FREQ
CTRL and Switching frequency derating on page 114.
4
4 kHz 4 kHz
8 kHz 8 kHz
12 kHz 12 kHz
16 kHz 16 kHz
2607 SWITCH FREQ CTRL Activates the switching frequency control. When active, the selection of
parameter 2606 SWITCHING FREQ is limited when the drive internal
temperature increases. See the figure below. This function allows the highest
possible switching frequency at a specific operation point.
Higher switching frequency results in lower acoustic noise, but higher internal
losses.
1 = ON
0 = OFF Inactive
1 = ON Active
Parameters in the Long Parameter mode
Index Name/Selection Description Def
Motor
f (Hz)
A
B
voltage
A = IR compensated
B = No compensation
2603
2604
Typical IR compensation values:
P
N
(kW) 0.37 0.75 2.2 4.0
200…240 V units
IR comp (V) 8.4 7.7 5.6 8.4
380…480 V units
IR comp (V) 14 14 5.6 8.4
100°C 120°C
Drive
4 kHz
12 kHz
temperature
f
sw
limit
8 kHz
110°C
T