Burkert Type 8791 - Manual (Page 45)

45
ConfiguringAuxiliaryFunctions
8.5.2. SPLITRANGE -
Signal Split range
Minimum and maximum values of the input signal as a % for which the valve runs through the entire stroke range.
Factory setting: Lower signal range split = 0%; Upper signal range split = 100%
SPLITRANGE lower value split range
upper value split range
100
0 %
%
Fig. 36: SPLITRANGE function
Lower value split range: Input the minimum value of the input signal as a %
Adjustment range: 0 – 75%
Upper value split range: Input the maximum value of the input signal as a %
Adjustment range: 25 – 100%
Use this function to limit the position set-point value range of the positioner by specifying a minimum and a
maximum value. This makes it possible to divide a unit signal range that is used (4 – 20 mA, 0 – 20 mA) into
several positioners (without or with overlapping). This allows several valves to be used alternately or, in the case
of overlapping set-point value ranges, simultaneously as actuators.
To split a unit signal range into two set-point value ranges:
Valve stroke [%]
Set-point value [mA]
(
INPUT)
Set-point value range
Positioner 1 Set-point value range
Positioner 2
Fig. 37: SPLTRNG graph
English
Software Tool - Positioner