22.7.3. P.q'lin Linearization Of The Process Characteristic - Burkert 8792 Operating Instructions Manual

Type 8792, 8793
Start-up, operation
process controller Type 8793
22.7.3. P.Q'LIN linearization of the process characteristic
This function automatically linearises the process characteristic.
When the P.CONTROL function is activated, the P.Q'LIN functions required for process control are copied
into the main menu. This function starts the program which automatically determines the nodes for a correction
characteristic.
→
.
Start the routine to linearise the process characteristic by selecting the
and press the selection key on the right (RUN) for approx. 3 seconds (countdown).
The program goes through the valve stroke in 20 steps from 0 to 100 % and measures the associated process
variable. The value pairs of the correction characteristic are placed as a freely programmable characteristic under
the CHARACT / FREE menu option and can be viewed under this menu option.
If the CHARACT menu option under the ADDFUNCTION menu option was not transferred into the main menu,
the transfer occurs automatically when the P.Q'LIN function is implemented.
At the same time the CHARACT / FREE menu option is activated.
Displays.on.the.panel.during.selection.and.implementation.of.the.routine
Display
Q.LIN #0
CMD=0%
Q.LIN #1
CMD=10%
:
Q.LIN #10
CMD=100%
Q.LIN
ready
or
Q.LIN
err/break
Table 36: Display for P,Q'LIN - Linearization of the process characteristic
Description
Display of the node which is just being started
(progress is indicated by a bar running along the upper edge of the display)
Display at the end of the routine
Display if an error occurs
P.Q'LIN menu option in the main menu
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