Starting The Function - Burkert 8692 Operating Instructions Manual

To observe PV, it is recommended to select via the arrow keys
To be able to select the display SP/PV(t), it must be activated in the EXTRAS menu
(see chapter "25.2.18 EXTRAS – Setting the display".
→
If PV oscillates continuously, the preset amplification factor of the process controller KP in the
menu P.CONTROL → PID.PARAMETER should be reduced.
→
As soon as the process actual value PV is constant, the P.TUNE function can be started.
24.5.3 Starting the function P.TUNE
WARNING!
Risk.of.injury.from.uncontrolled.process!
While the P.TUNE function is running, the control valve automatically changes the current degree of opening
and intervenes in the running process.
▶ Using suitable measures, prevent the permitted process limits from being exceeded.
For example by:
- an automatic emergency shutdown
- stopping the P.TUNE function by pressing the STOP key (press left or right key).
Procedure:
Key Action
MENU Press
/ Select P.TUNE
RUN
as long as countdown (5 ...) is
running
Press any key
EXIT Press
Table 49: Automatic adjustment of X.TUNE
To stop P.TUNE, press the left or right selection key
The changed data is saved in the memory (EEPROM) only when there is a switch to the process level,
by leaving the main menu (MAIN) using the left selection key
symbol is indicated
104
Description
Switching from process level
for approx. 3 s
During the automatic adjustment the following messages are indi-
Hold down
cated on the display.
"starting process tune" - Start self-optimization.
"identifying control process" - Process identification. Typical
process variables are determined from the response signal to a
defined stimulus.
"calculating PID parameters" - Structure and parameters of the
process controller are determined.
"TUNE ready" - Self-optimization was successfully completed.
Return to the main menu (MAIN).
Switching from setting level
on the display.
English
Type 8692, 8693
Start-Up
/ the graphical display SP/PV(t).
setting level
process level.
STOP .
. During the save process, the save
EXIT