Actual signals and parameters
193
OFF
Inactive
0
ON
Active
1
2602
FLUX BRAKING
Activates/deactivates the Flux Braking function. See section
OFF
OFF
Inactive
0
ON
Active
1
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 when vector
control cannot be applied.
To prevent overheating, set IR compensation voltage as low as possible.
The figure below illustrates the IR compensation.
Note:
The function can be used only when parameter
MOTOR CTRL
MODE setting is SCALAR:FREQ.
Type
dependent
0.0…100.0 V
Voltage boost
1 = 0.1 V
2604
IR COMP FREQ
Defines the frequency at which the IR compensation is 0 V. See figure in
parameter
IR COMP VOLT.
Note:
If parameter
U/F RATIO Is set to USER DEFINED, this
parameter is not active. The IR compensation frequency is set by parameter
80
0...100%
Value in percent of the motor frequency
1 = 1%
2605
U/F RATIO
Selects the voltage to frequency (U/f) ratio below the field weakening point.
LINEAR
LINEAR
Linear ratio for constant torque applications.
1
SQUARED
Squared ratio for centrifugal pump and fan applications. With squared U/f
ratio the noise level is lower for most operating frequencies.
2
USER DEFINED
Custom ratio defined by parameters
...
. See section
3
2606
SWITCHING FREQ
Defines the switching frequency of the drive. Higher switching frequency
results in lower acoustic noise. See also parameter
SWITC FREQ
CTRL and
on page
4
4 kHz
Can be used with scalar and vector control. The control mode is selected by
parameter
1 = 1 kHz
8 kHz
Can be used with scalar and vector control. The control mode is selected by
parameter
12 kHz
Can be used with scalar and vector control. The control mode is selected by
parameter
16 kHz
Can be used only with scalar control (i.e. when parameter
MOTOR
CTRL MODE setting is SCALAR:FREQ).
Parameters – complete descriptions
Index Name/Selection
Description
Def, FbEq
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 7.5
200…240
V units
IR comp (V) 8.4 7.7 5.6 8.4 N/A
380…480
V units
IR comp (V) 14
14
5.6 8.4 7
Содержание ACS350 Series
Страница 1: ...ACS350 User s Manual ACS350 Drives 0 37 22 kW 0 5 30 HP ...
Страница 4: ......
Страница 8: ...Safety 8 ...
Страница 18: ...Table of contents 18 ...
Страница 24: ...Hardware description 24 ...
Страница 44: ...Installation checklist 44 ...
Страница 56: ...Start up control with I O and ID Run 56 ...
Страница 140: ...Program features 140 ...
Страница 242: ...Actual signals and parameters 242 ...
Страница 266: ...Fieldbus control with embedded fieldbus 266 ...
Страница 284: ...Fault tracing 284 ...
Страница 288: ...Maintenance and hardware diagnostics 288 ...
Страница 309: ...Dimensions 309 Frame size R2 IP20 NEMA 1 3AFE68586658 A Frame size R2 IP20 NEMA 1 VAR EMC ...
Страница 311: ...Dimensions 311 Frame size R3 IP20 NEMA 1 3AFE68579872 B Frame size R3 IP20 NEMA 1 VAR EMC ...
Страница 312: ...Dimensions 312 Frame size R4 IP20 cabinet installation UL open Frame size R4 cabinet installation UL open 3AFE68935644 ...
Страница 313: ......