Burkert Type 8791 - Manual (Page 35)

35
ParameterizationofBasicFunctions
7.2.2. CHARACT -
Select the transfer characteristic between input signal
(position set-point value) and stroke
Characteristic (customer-specific characteristic)
Use this function to select a transfer characteristic with reference to set-point value (nominal position) and valve
stroke to correct the flow-rate or operating characteristic.
Factory setting: linear
The switching position of the DIP switches in the positioner takes precedence over the communication
software, i.e. settings of the correction characteristic (
CHARACT) that are modified through the communi-
cation software are only active if the corresponding DIP switch in the positioner is set to ON.
CHARACT select characteristic curve linear
linear
1 : 25
1 : 33
1 : 50
25 : 1
33 : 1
50 : 1
FREE
Fig. 24: CHARACT function
Select characteristic: Description:
linear Linear characteristic
1 : 25 Equal percentage characteristic 1:25
1: 33 Equal percentage characteristic 1:33
1 : 50 Equal percentage characteristic1:50
25 : 1 Inversely equal percentage characteristic 25:1
33 : 1 Inversely equal percentage characteristic 33:1
55 : 1 Inversely equal percentage characteristic 50:1
FREE 4) User-defined characteristic, freely programmable with nodes
4)
For information on entering nodes, see “Entering the freely programmable characteristic”
English
Software Tool - Positioner