Burkert 8693 - DBND - Insensitivity Area (Dead Band) of the Process Controller; Parameter Setting of the Process Controller - PARAMETER

97
Type 8692, 8693
english
Start-up, operation
process controller Type 8693
2.5.3 Parameter setting of the process controller - PARAMETER
These positioner functions are used to specify the control parameters of the process controller.
The basic principles of setting a controller can be found in the chapter entitled "General rules" - "Properties of PID
controllers".
DBND - Insensitivity area (dead band) of the process controller
This function causes the process controller to respond from a specific control difference only. This protects both the solenoid
valves in the positioner and the pneumatic actuator.
Factory setting: 1.0 % (with reference to the range of the process actual value scaled by PV SCALE - PVmin and PVmax)
+
-
DBND 1.0%
DBND 1.0%
INPUT
OK
*
Fig. 2: Operating structure P.CONTROL - DBND
Insensitivity area for process control
Process set-point
value (SP)
Control
difference
Xd2
Process
actual value
(PV)
Xd2
Xd2‘
Xd2‘
to the controller
Dead band
Fig. 3: Operating structure P.CONTROL - DBND
* If the sub-menu is left by pressing the selection key on the left (ESC), the value remains unchanged.