Nord Drivesystems SK 530P - Process Controller; Figure 11: Process Controller Flow Diagram

NORDAC PRO (SK 500P) – Users Manual for Frequency Inverters
198 BU 0600 en-2319
8.2 Process controller
The process controller is a PI controller which can be used to limit the controller output. In addition, the
output is scaled as a percentage of a master setpoint. This provides the option of controlling any
downstream drives with the master setpoint and readjusting using the PI controller.
+
-
X
x1
x2
y
x1*x2
y=
100 %
+
+
Figure 11: Process controller flow diagram
Master
setpoint
Analog input 1
(P400=4)
or
Analog input 2
Setpoint
P412 = 0.0-10.0V
Actual value
Analog input 1
(P400=14)
or
Analog input 2
Ramp PID controller P416
P-Factor P413
I-Factor P414
PI controller
Min. limitation
P466
Lead
Analog input 1
(P400 = 16)
Start-up time P102
Setpoint ramp
Max. limitation
P415