HBM WTX120 Bedienungsanleitung Seite 103

9.2.12.1 Coarse + fine
Coarse and fine flow are activated at the start of 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.
Coarse flow
ON
OFF
Fine flow
ON
OFF
Fig. 10.3 Filling cycle with coarse + fine valve control
Coarse flow
On
Off
Fine flow
On
Off
Fig. 10.4 Fill cycle with Coarse/Fine valve control with first fine flow phase activated
(see also chapter 9.2.27)
WTX120
Start
Start
First fine flow phase
before coarse flow
Start
A04500_02_Y00_00 HBM: public
Supervisor mode
Coarse flow cut-off point
Fine flow
cut-off point
Coarse flow cut-off point
Time
Time
Time
Fine flow Time
cut-off point
101