Operation Liquiline CM442/CM444/CM448
102 Endress+Hauser
Twu 0.1 to 999.9 s
Factory setting
20.0 s
Time constant for anti-windup feedback
The lower the value the greater the integrator
inhibition. Exercise extreme caution when making
changes.
Clock < Twu < 0.5(Tn + Tv)
Tv 0.0 to 9999.0 s
Factory setting
0.0 s
The derivative action time specifies the effect of the
D-value
The derivative action time is the time by which the ramp response of a PD controller reaches a specific value of the
manipulated variable at an earlier stage than it would solely as a result of its P-value.
alpha 0.0 to 1.0
Factory setting
0.3
Affects the additional damping filter of the D-controller.
The time constant is calculated from alpha * T
v
.
Process balance
Controller type="PID
2-sided"
Options
•Symmetric
•Asymmetric
Factory setting
Symmetric
Symmetric
There is only one control gain and this applies for both
sides of the process.
Asymmetric
You can set the control gain individually for both sides of
the process.
Xp
Process
balance="Symmetric"
Range of adjustment and
factory setting
Depends on the "Source of
data"
Proportional band, reciprocal value of the proportional
gain K
p
As soon as X deviates more than X
p
from the set point, Y
reaches 100%.
Xp Low Range of adjustment and
factory setting
Depends on the "Source of
data"
Process balance="Asymmetric"
Xp High
Path: Menu/Setup/Additional functions/Controller 1 or Controller 2
Function Options Info
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