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Operation and function
13.1.2.
CUTOFF
-
sealing function for the positioner
This function causes the valve to be sealed outside the control range.
Control mode resumes at a hysteresis of 1%.
Factory setting: DIP switch 2 set to OFF (no sealing function)
DiP Switches Position
Function
2
ON
Sealing function active. The valve completely closes below 2 %
23)
and opens above 98 % of the set-point value (
CUTOFF
)
OFF
No sealing function
Table 29:
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 modified via the communications
software are only active if DIP switch 2 in the positioner is set to ON.
Valve stroke [%]
Adjustable from 75 – 100 %
Set-point
value [%]
Adjustable from 0 – 25 %
Figure 40:
CUTOFF graph
23)
Factory setting can be changed via communications software.
English
Type 8694
Summary of Contents for 8694
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