Starting The Function - EBRO ARMATUREN EP 501 C Operating Instructions Manual

23.5.3. 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 Hold down
as long as countdown (5 ...)
is running
Press any key
EXIT Press
Table 42: 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
Possible.error.messages.when.running P.TUNE:
Display
TUNE
err/break
P.TUNE
ERROR 1
Table 43: P.TUNE; possible error messages
After making all the settings described in Chapter "Start-Up", the process controller is ready for use.
Activation and configuration of auxiliary functions is described in the following Chapter "24. Configuring the aux-
iliary functions".
84
Description
for approx. 3 s Switching from process level
During the automatic adjustment the following messages are indicated 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.
Cause of fault
Manual termination of self-optimization by
pressing the EXIT key.
No supply pressure connected.
No change to process variable.
english
Typ EP 501
Start-Up
setting level
process level.
STOP .
EXIT . During the save process, the save
Remedial action
Connect supply pressure.
Check process and, if required, switch on
pump or open the shut-off valve.
Check process sensor.