Burkert Type 8793 - Manual (Page 43)

43
Start-Up
Type 8792, 8793
Input the input signal (INPUT)
→
In the INPUT menu option select the input signal for the set-
point value.
(4 ... 20 mA, 0 ... 20 mA, 0 ... 10 V or 0 ... 5 V).
INPUT
4-20 mA
0-20 mA
0-10 V
0-5 V
Selection of the
input signal
EXIT
ENTER
SELEC
X.TUNE
press for approx. 3 s
Process level (values are displayed)
MENU
Einstellebene
ADD.FUNCTION EXIT
Fig. 25: Operating structure INPUT; Input the signal
Automatic adjustment of the positioner to the operating
conditions (X.TUNE)
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 from 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.
• Setting of the controller parameters of the positioner. Optimization
occurs according to the criteria of the shortest possible transient
time with simultaneous freedom from overshoot.
english