Cutoff - Sealing Function For The Position Controller - Burkert 8791 Manuel D'utilisation

CUTOFF
10.1.2.
sealing function for the position controller
This function causes the valve to be sealed outside the control range.
Controlled operation is resumed with a hysteresis of 1 %.
Factory settings: DIP switch 2 set to OFF (no sealing function)
DiP switches Position
2 ON
OFF
Table 15: DIP-switch 2
The communications software can be used to change the limits for the position set-point value as a percentage.
The switching position of the DIP switches in the positioner has priority over the communications
software, i.e. settings of the sealing function (CUTOFF) which are changed via the communications
software are not active unless DIP switch 2 in the positioner is set to ON.
Valve stroke
[%]
Fig. 12: CUTOFF graph
8)
Factory settings can be changed via communications software.
34
-
Function
Sealing function active. The valve completely closes below 2 %
and opens above 98 % of the set-point value (CUTOFF)
No sealing function
Adjustable from 75 – 100 %
Adjustable from 0 – 25 %
english
Type 8791
Functions
Set-point value [%]
8)