Voith 22000000700, Инструкция по эксплуатации

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Instruction Manual
Voith Turbo Way Valve WSR-D16214
2005 / 03 aie Voith Turbo GmbH & Co. KG Page: 10 / 24
9183626018945 en D – 74564 Crailsheim Version: 2.0
Block diagram - way valve
Fig. 2
Block diagram of way valve
P Supply
pressure
A,B Outputs
T Tank
return line
w Setpoint for position s 4..20 mA
∼
0..100 %
x Actual value feedback 20..4 mA
∼
0..100 %
ix Actual value remote indication 4..20 mA ~ 0..100 %
Adjusting parameters X0, X1, KP, FM and SF
Position control
The way valve is an electro-hydraulic converter with integrated positioner and subcascaded
magnetic force controller.
Dependent on the control deviation (setpoint w – actual value x) and the set controller gain
KPU, a reference variable U
Mag
results for the magnetic force controller. The magnetic
force F
Mag
generated in the magnetic system is recorded indirectly by the measurement of
the magnetic flux U
Hall
.
F
Mag
acts on the control piston of the way valve via the tappet (item 2 in Fig. 1). The control
piston is pressed against the control spring until the way-dependent spring force F
F
is
steady with force F
Mag
. This results in a flow rate that is variable in direction and size.
A double-acting hydraulic cylinder may be adjusted with this flow rate. When the actual
position is measured and supplied to the positioner integrated in the way valve, the
hydraulic cylinder is positioned position-controlled.
KP
X1
X0
+
-
FM
-
+
-
+
+
F
B
B
U
B
U
I
U
U
FM
U
Mag
U
Hall
F
Mag
Magnetkraftregler
Magnetsystem
Positions-
regler
F
F
Hub-
skalierung
1/SF
Hydraulisches
W egeventil
I
I
S
Externer Hydraulikzylinder
m it W egsensor
Leit-
technik
X
W
T
P
B
A