ABB ACS150 series, Руководство пользователя

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Actual signals and parameters
105
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
Parameters in the Long parameter mode
Index Name/Selection Description Def
26 MOTOR CONTROL
Motor control variables
2601 FLUX OPT ENABLE Activates/deactivates the Flux optimisation function. Flux optimisation
reduces the total energy consumption and motor noise level when the drive
operates below the nominal load. The total efficiency (motor and the drive)
can be improved by 1% to 10%, depending on the load torque and speed.
The disadvantage of this function is that the dynamic performance of the
drive is weakened.
0 = OFF
0 = OFF Inactive
1 = ON Active
2603 IR COMP VOLT Defines the output voltage boost at zero speed (IR compensation). The
function is useful in applications with a high break-away torque. To prevent
overheating, set IR compensation voltage as low as possible.
The figure below illustrates the IR compensation.
Motor
A = IR compensated
voltage
B = No compensation
A
Typical IR compensation values:
2603
f (Hz)
B
2604
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 section Switching frequency derating, I2N on page 139 .
In multimotor systems, do not change the switching frequency from the
default value.
4 kHz
4 kHz 4 kHz
8 kHz 8 kHz
12 kHz 12 kHz
16 kHz 16 kHz