3 Operation - Configuration - Parameterization
22
3.3 Parameterization (PArA)
Enter the controller parameters here.
PArA ->
Parameters Value Description
Proportional band
PB1, PB2
1
0 ...
9999
Range of the proportional band
The larger the proportional band the lower the controller ampli-
fication.
The controller structure is not effective with Pb = 0 (behavior
identical to limit value monitoring). For the continuous control-
ler, ensure that Pb is ! 0.
Derivative time
dt
0 ...
80 ...
9999 (s)
Influences the differential portion of the controller output signal
The larger the derivative time the higher the effectiveness of
the D portion.
0 = derivative time switched off (no D portion)
Reset time
rt
0 ...
350 ...
9999 (s)
Influences the integral portion of the controller output signal
The larger the reset time the lower the effectiveness of the I
portion.
0 = reset time switched off (no I portion)
Cycle time
Cy1, Cy2
1
0.0 ...
20.0 ...
999.9 (s)
When using a switched output, the cycle time should be cho-
sen so that the energy flow to the process is as continuous as
is practicable without overloading the switching elements.
Contact spacing
db
0.0 ...
999.9
Spacing between the two control contacts of a 3-state control-
ler
Hysteresis
HyS1, HyS2
1
0.0 ...
1.0 ...
999.9
Hysteresis for a switching controller with proportional range
Pb = 0 (behavior identical to that for limit value monitoring)
Working point
y0
-100 ...
0 ...
+100
The output level for P and PD controllers (if x = w then y = y0)
Output level limiting
y1, y2
0 ...
100 (%)
y1: Maximum output level limitation
-100 ...
+100 (%)
y2: Minimum output level limitation
(only effective when Pb ! 0)
1
Only available for 3-state controllers (controller output 2)
The display of parameters depends on the controller type. For some parameters, the decimal
place depends on the device setting.
Factory settings appear in bold.
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