Operation
Liquiline System CA80HA
132
Hauser
Menu/Setup/Additional functions/Controller 1 ... 2
Function
Options
Info
Parameters
The Liquiline PID controller has been implemented in the serial structural form, i. e. it has the following parameters:
• Integral action time T
n
• Derivative action time T
v
• Proportional band X
p
Setup Level
=
Advanced
: With this setup level, you can also configure the following:
• Time constant T
wu
• Time constant α
• Width of the neutral zone X
n
• Width of the hysteresis range of the neutral zone X
hyst
• Clock time of the controller
Tn
0.0 to 9999.0 s
Factory setting
0.0 s
The integral action time specifies the effect of
the I-value
If
Tn
> 0 the following applies:
Clock
<
Twu
<
0.5(
Tn
+
Tv
)
The integral action time is the time needed in a step-function response to achieve a change in the manipulated variable
- as a result of the I effect - which has the same magnitude as the P-value.
y
t
PI
P
T
n
e
t
0
0
e = control deviation, e=w
‐
x (set point controlled variable)
Summary of Contents for Liquiline System CA80HA
Page 2: ......
Page 214: ...www addresses endress com 71532810 71532810 ...