66
Start-up
Type 8792, 8793 REV.2
14.4
X.TUNE
– Automatic adjustment of the position
controller
WARNING
Danger due to the valve position changing when the
X.TUNE
function is running!
When the
X.TUNE
function is run under operating pressure, there is an acute risk of injury.
▶
Never run
X.TUNE
while the process is running.
▶
Secure the device against accidental activation.
NOTE
An incorrect supply pressure or incorrectly connected operating medium pressure may cause the con-
troller to be wrongly adjusted.
▶
Run
X.TUNE
in each case
at the supply pressure available in subsequent operation (= pneumatic auxil-
iary power).
•
Run the
X.TUNE
function preferably
without
operating medium pressure to exclude interference due to
flow forces.
The following functions are actuated automatically:
•
Adjustment of the sensor signal to the (physical) stroke of the actuator used.
•
Determination of parameters of the PWM signals to control the solenoid valves integrated in Type 8792,
8793.
•
Adjustment of the controller parameters for the position controller. Optimization occurs according to the
criteria of the shortest possible transient time without overshoots.
Automatically adjust the position controller as follows:
→
Press
MENU
for 3 s. Switching from process level
setting level.
→
/ Select
X.TUNE
.
→
Select
RUN
. Hold down as long as countdown (5 ...) is running.
During the automatic adjustment messages are displayed indicating the progress of the
X.TUNE
(e.g.
“TUNE #1....”
).
When the automatic adjustment ends, the message
“X.TUNE READY” is indicated.
→
Select any key. Return to the main menu (MAIN).
→
Select
EXIT
. Switching from setting level
process level.
You have automatically adjusted the position controller.
To stop
X.TUNE
, press the left or right selection key
STOP
.
english
Summary of Contents for 8792
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