11 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.
11.1 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
factor 389 and can be read out via the parameter Actual system value 242, i.e. Ac-
241 x
Actual system value factor
389 =
242.
Factor Actual Value System
11.2 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
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
case of the sensorless control methods. In the case of the field-
methods, they are referred to the torque-forming current component
216.
397 Nominal volumetric flow 1 m
/h 99999 m
/h 10 m
/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 te
controller in configurations 111, 211, 411 and 611
. The actual values displayed are
calculated according to the bad point method independently of the selected Opera-
440 of the technology controller.
06/13 Operating Instructions ACU 133
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