Burkert Type 8693 - Manual (Page 156)

156
Start-up and operation of the
position controller Type 8693
25.2. CUTOFF -
sealing function for the position controller Type
8693
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 or for the process set-
point value ( SP) as a percentage of the scaling range, 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 %; Max = 100 %; CUT type = Type PCO
CUTOFF
Min 0 %
Max 100 %
EXIT
ENTER
INPUT
+
-
Min 0 %
OK
INPUT
+
-
Max 100 %
OK
51)
51)
Sealing threshold
Deaeration (0 = not
active)
Adjustment range:
0 – 25 %
Sealing threshold
Aeration (100 = not
active)
Adjustment range:
75 – 100 %
CUT type
ENTER SELEC
Type PCO Select process
set-point value
EXIT Type XCO
Select position
set-point value
Figure 97: Operating structure CUTOFF-8693
Changed values are not transferred into the memory (EEPROM) until the main menu (MAIN) is left.
51)
If the sub-menu is left by pressing the selection key on the left (ESC), the value remains unchanged.
english
Type 8692, 8693