Cutoff Sealing Function For The Position Controller Type Type 8792 - Burkert 8792 Operating Instructions Manual

Type 8792, 8793 Type 8792, 8793
Start-up, operation
position controller Type 8792
21.3.4. CUTOFF
sealing function for the position controller type Type 8792
The sealing function for the process controller type Type 8793 can be found in chapter Auxiliary functions
for the process controller.
This function causes the valve to be sealed outside the control area.
This is where you input the limits for the position set-point value (CMD) as a percentage, from which the actuator
is fully deaerated or aerated.
Control mode opens or resumes at a hysteresis of 1%.
If the process valve is in the sealing area, the message "CUTOFF ACTIVE" is indicated on the display.
Factory setting: Min = 0%;
ENTER
CUTOFF
EXIT
* If the sub-menu is left by pressing the selection key on the left (ESC), the value remains unchanged.
Fig. 43: Operating structure CUTOFF
Changed values are not transferred into the memory (EEPROM) until the main menu (MAIN) is left.
Valve stroke [%]
(POS)
Fig. 44: Graph - CUTOFF; Position controller type Type 8792
Max = 100%
INPUT
Min 0 %
*
OK
INPUT
Max 100 %
*
OK
Adjustable from 75 – 100%
Adjustable from 0 – 25%
Sealing threshold Deaeration
+
Adjustment range: 0 – 25 %
(0 = not active)
Min 0%
-
Sealing threshold
+
Aeration
Adjustment range: 75 – 100 %
Max 100%
(100 = not active)
-
Set-point value [%]
(CMD)
english
99