HBM WE2107 - Page 124

WE2107 - Communication commands
124
I1820-1.3 enHBM
The target weight of the dosing process is in the parameter LIV2_ON_level
The coarse flow disconnection point is the parameter LIV2_OFF_level.
If the dosing result is out of the tolerance (LIV3_ON/OFF_level) then the alarm output
(OUT4) will be activated. The result is OK if the equation is valid:
LIV3_OFF < = FRS < = LIV3_ON
If the dosing result (FRS) is out of the tolerance the optimization function will change the
parameter of the disconnection point (LIV2_OFF_level)
Diff:= LIV2_ON_level – FRS (target weight – dosing result)
Diff1 := Diff * correction factor
LIV2_OFF_Level := LIV2_OFF_Level + Diff1
The correction factor depends:
|Target weight / FRS|
* 100
< 2 % 2…4 % >4 %
Correction factor 0.25 0.5 1.0
If the dosing time exceeds the maximum filling/dosing time the process stops immediately
and the alarm output (OUT4) becomes active.
During the dosing process the BRK stops the process immediatly.
The start will not be done if the actual gross weight is below a limit (LIV4_OFF_level =
minimum filling level tank)