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WE2107 - Communication commands
I1820-1.3 en HBM
Cycles of dosing:
D Start dosing (external input/button/command RUN), if the bin is empty,
start the time monitoring (MFT), deactivate the ready signal (OUT1)
D Tare ( if activated with TAD>0, switch to NET)
D Start coarse flow (activate OUT2)
D If the weight is equal or above the coarse flow disconnection point then stop the coarse
flow (deactivate OUT2)
D Wait for the residual flow time (RFT)
D Final measurement: If standstill occurs the filling result will be stored (FRS), the total
weight (SUM) will be calculated and the dosing counter (NDS) will be incremented
D If the parameter EPT>0 the output OUT3 will be activated for the emptying time
D Stop the time monitoring (MFT), activate the ready signal (OUT1)
D Short message in the display `READY' (for 3 sec.)
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 (MFT) 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 above a limit (LIV4_OFF_level)
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