Burkert 8792 - DBND - Insensitivity Range (Dead Band); KP - Amplification Factor of the Process Controller

90
Start-Up
25.3.2. DBND – Insensitivity range (dead band)
This function causes the process controller to respond from a specific control difference only. This protects both
the solenoid valves in Type 8792/8793 and the pneumatic actuator.
Factory setting: 1.0 % with reference to the range of the scaled process actual value
(setting in the menu PV-SCALE → PVmin → PVmax).
Operating structure:
EXIT
Input value
ENTER INPUT
OK
ESC
PID.PARAMETER DBND 1.0 %
FILTER 0
Figure 42: Operating structure DBND; insensitivity range
Insensitivity range for process control
Process
set-point value
(SP)
Control
difference
Xd2
Process
actual value
(PV)
Xd2
Xd2‘
Xd2‘
to the controller
Dead band
Figure 43: Diagram DBND; insensitivity range for process control
25.3.3. KP – Amplification factor of the process controller
The amplification factor specifies the P-contribution of the PID controller
(can be set with the aid of the P.TUNE function).
Factory setting: 1.00
Operating structure:
EXIT
Input value
ENTER
INPUT
OK
ESC
PID.PARAMETER
KP 1.00
FILTER 0
DBND 1.0 %
Adjustment range: 0 ... 99.99
(% / set unit)
Figure 44: Operating structure KP; amplification factor
The KP amplification of the process controller refers to the scaled, physical unit.
english
Type 8792, 8793