Endress+Hauser Liquiline System CA80HA, Руководство по эксплуатации

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Operation Liquiline System CA80HA
134 Hauser
Menu/Setup/Additional functions/Controller 1 ... 2
Function Options Info
Xn Range of adjustment and
factory setting depending on
the
Source of data
Tolerance range about the set point that
prevents minor oscillations about the set point
if using two-sided control loops.
XN Low
Process balance =
Asymmetric
Range of adjustment and
factory setting depending on
the
Source of data
x
n
for x < w (controlled variable < set point)
XN High
Process balance =
Asymmetric
x
n
for x > w (controlled variable > set point)
XHyst 0.0 to 99.9 %
Factory setting
0.0 %
Width of the hysteresis range of the neutral
zone, relative component of x
n
x
n
x
hyst
e = w-x
y
The graphic illustrates the manipulated variable (with a pure P
‐
controller) over the control deviation e (set point minus
controlled variable). Very low control deviations are set to zero. Control deviations > x
n
are processed "in the normal
way". Via x
hyst
it is possible to configure a hysteresis to suppress oscillations at the edges.
Clock 0.333 to 100.000 s
Factory setting
1.000 s
Expert setting
Only change the clock time of the controller if
you know exactly what you are doing.
Clock < Twu < 0.5( Tn + Tv )
Max y change rate 0.00 to 1.00
Factory setting
0.40
Limits the change of the output variable
A value of 0.5 permits a maximum
manipulated variable change of 50 % within
one second.