57
Operation and function
14.1.3
CHARACT
-
Characteristic correction 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: OFF (linear)
Position
Function
ON
Correction characteristic for adjustment of the operating characteristic
(linearization of the process characteristic
CHARACT
)
25)
OFF
Linear characteristic
Table 29:
Characteristic correction
Activation in the device has priority over the communications software, i.e. settings of the char-
acteristic correction (
CHARACT
) which are modified via the communications software are only
active if Charact LED in the positioner lights up green.
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 30:
Selection of characteristics
25) The characteristic type can be changed via the communications software only.
english
Type 8696, REV.2
Summary of Contents for 8696
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