58
Operation and function
13.1.3.
CHARACT
-
select the transfer characteristic between input signal
(position set-point value) and stroke
Characteristic (customer-specific characteristic)
This function can be used to activate a transfer characteristic with respect to set-point value (set-point position)
and valve stroke for correction of the flow-rate or operating characteristic.
The transfer characteristic can be changed via the communications software only.
Factory setting: DIP switch 3 set to OFF (linear)
DiP Switches Position
Function
3
ON
Correction characteristic for adjustment of the operating characteristic
(linearization of the process characteristic
CHARACT
)
24)
OFF
Linear characteristic
Table 30:
DIP switch 3
The switching position of the DIP switches in the positioner has priority over the communications
software, i.e. settings of the correction characteristic (
CHARACT
) which are modified via the communica-
tions software are only active if DIP switch 3 in the positioner is set to ON.
Characteristics which can be selected via the communications software:
Characteristic
Description
linear
Linear characteristic
1 : 25
Equal percentage characteristic 1 : 25
1 : 33
Equal percentage characteristic 1 : 33
1 : 50
Equal percentage characteristic 1 : 50
25 : 1
Inversely equal percentage characteristic 25 : 1
33 : 1
Inversely equal percentage characteristic 33 : 1
55 : 1
Inversely equal percentage characteristic 55 : 1
FREE
User-defined characteristic, freely programmable via nodes
Table 31:
Selection of characteristics
A detailed description of the characteristics can be found in the operating instructions for the communica-
tions software for positioners.
24)
The characteristic type can be changed via the communications software only.
English
Type 8694
Summary of Contents for 8694
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