SKS Sweden Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series, Operating Instructions Manual, Page: 114 / 260

112
Operating Instructions ACU
09/08
10 System Data
The various control functions and methods according to the selected
Configuration
30 are supplemented by control and special functions. For monitoring the applica-
tion, process parameters are calculated from electrical control parameters.
10.1 Actual System Value
The parameter
Actual system value factor
389 can be used if the drive is monitored
via the actual value
Actual system value
242.
The
Actual frequency
241 to be monitored is multiplied by the
Actual system value
factor
389 and can be read out via the parameter
Actual system value
242, i.e.
Ac-
tual frequency
241 x
Actual system value factor
389 =
Actual system value
242.
Parameter Settings
No. Description Min. Max. Fact. sett.
389 Factor Actual Value System -100.000 100.000 1.000
10.2 Volume Flow and Pressure
The parameterization of the factors
Nominal Volumetric Flow
397 and
Nominal
Pressure
398 is necessary if the matching actual values
Volumetric Flow
285 and
Pressure
286 are used to monitor the drive. The conversion is done using the elec-
trical control parameters.
Volume flow
285 and
Pressure
286 are referred to the
Effective current
214 in the
case of the sensorless control methods. In the case of the field-oriented control me-
thods, they are referred to the torque-forming current component
Isq
216.
Parameter Settings
No. Description Min. Max. Fact. sett.
397 Nominal volumetric flow 1 m
3
/h 99999 m
3
/h 10 m
3
/h
398 Nominal pressure 0.1 kPa 999.9 kPa 100.0 kPa
Line mains or channel characteristic:
H
kPa
Q
m /h 3
bad point method
P - method
const.
A
B2
B1
Point A in the figure describes the rating point of a pump. The transition to partial
load operation mode B1 can be affected at a constant pressure H (change of convey-
ing flow Q, pressure H remains constant). The transition to partial load operation
mode B2 can be affected according to the bad point method (change of pressure H
and conveying flow Q). Both methods can be realized with the integrated technology
controller in configurations 111 and 211. The actual values displayed are calculated
according to the bad point method independently of the selected
Operation
mode
440 of the technology controller.
Operating Instructions ACU 09/08 112