Nord Drivesystems SK 200E Series, Руководство пользователя

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9 Additional Information
BU 0200 GB Subject to technical alterations 241
9.2 Process controller
The process controller is a PI controller, with which it is possible to limit the controller output. In addition, the
output is standardised to a percentage of a master setpoint value. This provides the possibility of controlling
an upstream drive unit with the master setpoint value and adjusting it with the PI controller.
+
-
X
x1
x2
y
x1*x2
y=
100 %
+
+
Fig.: Process controller flow-chart
9.2.1
Process controller application example
M
M
M
M
0V
10V
Frequency inverter
Setpoint of pilot machine
AIN 1
Enabled right
DIN 1
Actual position CR
AIN 2
Nominal position CR
via parameter P412
Master set-
point value
Analog input 1
(P400[-03]=2)
or
Analog Input 2
Setpoint
P412 = 0.0-10.0V
Actual
value
Analog input 1
(P400[-03]=6)
or
Analog Input 2
Ramp time PI setpoint P416
P-Factor P413
I-Factor P414
PI controller
Min. limit
P466
Lead value
Analog input
(P400[..] = 16)
Start-up time P102
Setpoint ramp
max. limit
P415
Controlled drive via CR
Compensating roller = CR (dancer roller) Pilot machine
Actual
position
of CR via
potentiometer
0-10V
Centre 5V
nominal
position
f
t
Setpoint of
pilot machine
Controller
limit P415 in
% of setpoint
Controller
limit P415