Functions Of Sensorless Control; Slip Compensation - BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual

Structural image: Indirect Volume Flow Control
Reference percentage source
Ind. volume flow control factor
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
feedback. The stator frequency and speed are corrected as a function of the load.
Slip compensation is turned on during guided commissioning. The
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
Operation Mode 660
0 - off
1 - On
The control behavior of the slip compensation can only be optimized via the parameters in the case
of specific applications. Parameter
the effect of the slip compensation proportionally to the change of load.
defines the max. frequency change per second in order to avoid an overload in the case of a load
change.
Parameter Minimum Frequency
becomes active.
Parameter
No. Description
661 Amplification
662 Max. slip ramp
663 Minimum frequency
12/16
476
-
x
446
Actual percentage source
660 for the slip compensation enables as speed control without
377 manually, refer to motor data sheet.
The slip compensation is deactivated.
The load-dependent slip speed is compensated
661 determines the correction of the speed and
Amplification
663 determines the frequency as from which the slip compensation
Min.
0.0 %
0.01 Hz/s
0.01 Hz
Operating Instructions ACU
Technology controller
Actual values:
Volumetric flow
Pressure
286
478
Stator Resistance
Function
Max. Slip Ramp
Setting
Max. Factory setting
300.0 %
650.00 Hz/s
599.00 Hz
285
377 is required
662
100.0 %
5.00 Hz/s
0.01 Hz
221