BONFIGLIOLI active cube 201

152
Operating Instructions ACU
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15 Reference Values
The ACU series frequency inverters can be configured specific to the application and enable
customer-specific adaptation of the module hardware and software structure.
15.1 Frequency Limits
The output frequency of the frequency inverter and thus the speed setting range are defined by the
parameters Minimum Frequency 418 and Maximum Frequency 419. The relevant control methods
use the two limit values for scaling and limiting the frequency.
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
418
Minimum frequency
0.00 Hz
599.00 Hz
3.50 Hz
1)
0.00 Hz
2)
419
Maximum frequency
0.00 Hz
599.00 Hz
50.00 Hz
The factory settings depend on the setup of parameter Configuration 30:
1)
3.50 Hz in Configurations 1xx, 4xx; 6xx
2)
0.00 Hz in Configurations 2xx, 5xx
15.2 Slip Frequency
The torque-forming current component and thus the slip frequency of the
3-phase machine depend on the required torque in the case of the field-oriented control methods.
The field-oriented control method also includes the parameter Slip Frequency 719 to limit the
torque in the calculation of the machine model. The rated slip calculated from the rated motor
parameters is limited in accordance with the Slip Frequency 719 which is parameterized as a
percentage.
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
719
Slip Frequency
0 %
10000 %
330 %
15.3 Percentage Value Limits
The percentage adjusting range is defined by parameters Minimum Reference Percentage 518 and
Maximum Reference Percentage 519. The relevant control methods use the two limit values for
scaling and limiting of percentages.
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
518
Minimum Reference Percentage
0.00 %
300.00 %
0.00 %
519
Maximum Reference Percentage
0.00 %
300.00 %
100.00 %
15.4 Frequency reference channel
The different functions for the defining the reference frequency are connected via the frequency
reference value channel. The Reference Frequency Source 475 determines the additive assignment of
the available reference value sources depending on the hardware installed.
Reference Frequency Source 475
Function
1 -
Abs. value analog value MFI1A
Multifunction input 1 in analog Operation Mode 452 is
the reference value source.
2 -
Abs. Analog Input EM-S1INA
1)
The analog input of the extension module is the
reference value source.
4 -
Abs. Value MFI1A + EM-S1INA
1)
Combination of operation modes 1 and 2.