NORD Drivesystems BU0180 - Manual (Page 159)

9 Additional Information
BU 0180 GB-0914 Pre-series version 159
9.2 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 %
+ +
Fig.: Flow diagram process controller of the SK 1x0E
9.2.1 Process controller application example
M
M
M
M
0V
10V
Frequency inverters
Setpoint of pilot machine AIN 1
Enable right DIN 1
Actual position CR AIN 2
Nominal position CR
via parameter P412
Master set-
point
a) Analog input 1
(P400[-01]=2)
b) or
c) Analog input 2
Setpoint
a) P412 = 0.0-10.0V
Actual
value
Analog input 1
(P400[-01]=6)
or
Analog input 2
Ramp time PI setpoint P416
P-Factor P413
I-Factor P414
PI controller
Min. limit
P466
Lead
Analog input
(P400[..] = 16)
Start-up time P102
Setpoint ramp
max. limit
P415
controlles drive via CR Compensating roller = CR (dancer roller) Pilot machine
Actual CR
position via
Potentio-
meter 0 -10V
Centre = 5V
setpoint posi-
tion
f
t
Setpoint of
pilot machine
Controller
limit P415 in
% of setpoint
Controller li-
mit P415