X.tune.-.Automatic.adjustment.of.the.positioner - EBRO ARMATUREN EP 501 C Operating Instructions Manual

Typ EP 501
Start-Up
21.2. X.TUNE – Automatic adjustment of the positioner
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 EP 501 /
EP 501 C.
• Adjustment of the controller parameters for the positioner. Optimization occurs according to the criteria of the
shortest possible transient time without overshoots.
Procedure:
Key Action
MENU Press for approx. 3 s
/ Select X.TUNE
RUN Hold down
as long as countdown (5 ...) is
running
Press any key
EXIT Press
Table 26: Automatic adjustment of X.TUNE
To stop X.TUNE, press the left or right selection key
Description
Switching from process level
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.
Return to the main menu (MAIN).
Switching from setting level
.
STOP
setting level.
process level.
english
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