Bürkert 8619 multiCELL WM AC, Operating Instructions Manual

Page: 91 / 194

TYPE : Choose the type of the function.
NAME : Rename the function chosen. See section 8.4 Entering text. This name appears in the view associated
with this function in Process level.
STATE: Used to activate (choose "ON") or deactivate (choose "OFF") the view of the function selected in Process
level.
FORMULA: Enter an arithmetic equation, using the variables A, B, C, D or E.
PV A (OR PV B): Combine a physical parameter (or the result of one of the functions, F1 to F12, already used, or
a constant, or a value sent by a PLC) with variable A (or B). See section 8.16.
By using the operators "+" or "-", A and B must be of the same kind and have the same units.
A (OR B, C, D OR E): define the variables A, B, C, D or E of the function "MATH". The variables can be a
physical parameter or the result of one of the functions, F1 to F12, already used, or a constant, or a value sent by
a PLC. Make sure the unit of the final result is coherent.
FILTER : Choose the level of attenuation of the input variables. See Fig. 51 : Filtering curves.
VALUE: If "PV A: / PV B:" or "A, B, C, D, E" is a constant, enter the value of the constant.
UNIT: Select the units in which the result is displayed on the associated user view.
0
13:40
0
0
MENU
F1:A+B
148
L/min
57
L/min
205
L/min
Value of variable A
Value of variable B
Result of the function A+B
29/06/2010
Fig. 56 : Example of a view of an active arithmetic function in Process level
8.10.13 Configuring a "PROP" proportional function
This function is used to scale a process input (PV):
0%
100%
"PROP" function
Process input
(PV)
fallback
position
System switch
result Fx: (CMD)
PV- PV+
Fig. 57 : "PROP" proportional function
Refer to section 8.9 to access the "Parameters" menu.
91
Adjustmentandcommissioning
Type 8619
English