HBM WTX120 Bedienungsanleitung Seite 104

Supervisor mode
9.2.12.2 Coarse + fine 2
Before the start of the coarse flow phase, the fine flow is initially activated for a
short time. Then Coarse+Fine flow is activated for the coarse flow phase.
When the coarse flow limit switch (CBK) is reached the coarse flow is
deactivated. If opening occurs in the fine flow phase, such as during re-dosing
(parameter P1 > 0), or when starting from a stop, only the fine flow is activated.
This priority fine flow serves to minimize foaming of the fill material.
Coarse flow
ON
OFF
Fine flow
ON
OFF
Fig. 10.5 Filling cycle with valve control Coarse+Fine2
Coarse flow
On
Off
Fine flow
On
Off
Fig. 10.6 Fill cycle with valve control 'Coarse/Fine2' with first fine flow phase activated
(see also chapter 9.2.27)
102
Start
Start
First fine flow phase
before coarse flow
Start
A04500_02_Y00_00 HBM: public
Coarse flow cut-off point
Fine flow
cut-off point
Coarse flow cut-off point
Time
Time
Time
Fine flow Time
cut-off point
WTX120