Burkert Type 8694 - Manual (Page 57)

57
Operationandfunction
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