BONFIGLIOLI active cube 201, Руководство по эксплуатации

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12/16 Operating Instructions ACU 221
Structural image: Indirect Volume Flow Control
Technology controller
Ind. volume flow control factor
446
Actual percentage source
478
Actual values:
Volumetric flow 285
Pressure
286
-
Reference percentage source 476
x
18.4 Functions of sensorless control
The configurations of the sensorless control contain the following additional functions, which
supplement the behavior according to the parameterized V/f characteristic.
18.4.1 Slip compensation
The load-dependent difference between the reference speed and the actual speed of the 3-phase
motor is referred to as the slip. This dependency can be compensated by the current measurement
in the output phases of the frequency inverter.
Activation of
Operation Mode
660 for the slip compensation enables as speed control without
feedback. The stator frequency and speed are corrected as a function of the load.
Slip compensation is turned on during guided commissioning. The
Stator Resistance
377 is required
to ensure a correct function and is measured during guided commissioning.
If guided commissioning is not performed, slip compensation can also be activated manually. In this
case enter the
Stator Resistance
377 manually, refer to motor data sheet.
Operation Mode 660 Function
0 - off The slip compensation is deactivated.
1 - On The load-dependent slip speed is compensated
The control behavior of the slip compensation can only be optimized via the parameters in the case
of specific applications. Parameter
Amplification
661 determines the correction of the speed and
the effect of the slip compensation proportionally to the change of load.
Max. Slip Ramp
662
defines the max. frequency change per second in order to avoid an overload in the case of a load
change.
Parameter Minimum Frequency
663 determines the frequency as from which the slip compensation
becomes active.
Parameter Setting
No. Description Min. Max. Factory setting
661 Amplification 0.0 % 300.0 % 100.0 %
662 Max. slip ramp 0.01 Hz/s 650.00 Hz/s 5.00 Hz/s
663 Minimum frequency 0.01 Hz 599.00 Hz 0.01 Hz