Inputting The Input Signal; Automatic Adjustment (Autotune) Of The Position Controller - Burkert 8792 Operating Instructions Manual

Type 8792, 8793 Type 8792, 8793
Start-up, operation
position controller Type 8792
19.6.2. inputting the input signal
INPUT - Selected unit input signal
→
Under this menu option input the unit signal used for the set-point value.
ENTER
INPUT
EXIT
Fig. 31: Operating structure INPUT
19.6.3. automatic adjustment (autotune) of the position controller
X.TUNE - Autotune for position controller
WarnInG!
uncontrolled.valve.movements.while.the.X:TUNE.function.is.running!
While this function is running, the valve automatically moves from its current position!
• Never run X.TUNE while a process is running!
• Take appropriate measures to prevent the equipment from being unintentionally actuated!
note!
An.incorrect.supply.pressure.or.incorrectly.connected.operating.medium.pressure.may.cause.the.con-
troller.to.be.wrongly.adjusted!
• X.TUNE at the supply pressure available during subsequent operation (= pneumatic auxiliary energy).
• Run the X.TUNE function preferably without operating medium pressure to exclude interference caused by
flow forces.
The following functions are actuated automatically:
• Adjustment of the sensor signal to the (physical) stroke of the actuator used.
• Determination of parameters for the PWM signals to control the solenoid valves integrated in the positioner.
• Adjustment of the controller parameters for the position controller. Optimization occurs according to the criteria
of a shortest possible correction time with a simultaneous freedom from overshoot.
→
Start Autotune by selecting
→
Then hold down the right selection key (RUN) for approx. 3 seconds (countdown on display).
4-20 mA
0-20 mA
0-10 V
0- 5 V
X.TUNE in the main menu (MAIN) using the arrow keys.
SELEC
• Current 4 – 20 mA
• Current 0 – 20 mA
• Voltage 0 – 10 V
• Voltage 0 – 5 V
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