Control characteristics
The velocity of the medium is measured in the measuring component (sensor
electronics) and converted to a flow rate signal.
The positioning signal Y corresponds to the power Q via the exchanger, the
volumetric flow is regulated in the EPIV. The control signal Y is converted into an
equal-percentage characteristic curve and provided with the V̇max value as the new
reference variable w. The momentary control deviation forms the positioning signal Y1
for the actuator.
The specially configured control parameters in connection with the precise flow rate
sensor ensure a stable quality of control. They are however not suitable for rapid
control processes, i.e. for domestic water control.
U5 displays the measured volumetric flow as voltage (factory setting). As an
alternative, U5 can be used for displaying the valve opening angle. It is always in
reference to the respective V̇nom, i.e. if V̇max is e.g. 50% of V̇nom, then Y = 10 V,
U5 = 5 V.
1. Standard equal percentage Vmax = Vnom / 2. effect Vmax < Vnom
0
100%
100%
U5 [V]
Y [V]
nom
0
100%
80%
80%
50%
100%
U5 [V]
Y [V]
nom
50%
25%
1
2
max
D
A
U
5
PP/MP
D
A
w
max
M
A
D
k
DN
Y
1
Y
1)
1)
EP..F+MP
Electr. 2-way PI-CCV EPIV, Flange, PN 16
Product features
www.belimo.com
EP..F+MP • en-ap • 2019-06-03 • subject to changes
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