Burkert Type 8793 - Manual (Page 79)

79
Start-Up
23.2. X.TUNE – Automatic adjustment of the position
controller
WARNING!
Danger.due.to.the.valve.position.changing.when.the.X.TUNE.function.is.run!
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 system against unintentional activation!
NOTE!.
An.incorrect.supply.pressure.or.incorrectly.connected.operating.medium.pressure.may.cause.the..
controller.to.be.wrongly.adjusted!
• Run X.TUNE in.each.case.at the supply pressure available in subsequent operation (= pneumatic auxiliary
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.
Procedure:
Key Action Description
MENU Press for approx. 3 s Switching from process level setting level.
/ Select X.TUNE
RUN Hold down
as long as countdown (5 ...) is
running
While the automatic adjustment is running, messages on the
progress of the
X.TUNE
(e.g. "TUNE #1....") are indicated on the display.
When the automatic adjustment ends, the message "X.TUNE READY"
is indicated.
Press any key Return to the main menu (MAIN).
EXIT Press Switching from setting level process level.
Table 34: Automatic adjustment of X.TUNE
To stop X.TUNE, press the left or right selection key STOP .
English
Type 8792, 8793