Control Modes - Wilo Stratos GIGA Série Notice De Montage Et De Mise En Service

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Electronic module
4 1
2 3 5
Fig. 14: Electronic module
6.2

Control modes

H
H
max
H
s
s
H
min
Fig. 15: p-c control
H
H
H
max
H
s
½ H
s
H
min
Fig. 16: p-v control
76
7
6 8
Q
Q
Q
The electronic module controls the speed of the pump within the
control range that can be adjusted by the setpoint.
The hydraulic output is controlled by differential pressure and the set
control mode.
In all control modes, however, the pump adapts itself continuously to
the changing power requirements of the system, which is the case
especially when thermostatic valves or mixers are used.
The basic advantages of the electronic control are:
• Energy saving at the same time as reduced operating costs
• Reduced number of differential pressure valves required
• Reduction of flow noise
• Adaptation of the pump to changing operating requirements
Legend (Fig. 14):
1 Attachment points cover
2 The red button
3 Infrared window
4 Control terminals
5 Display
6 DIP switch
7 Power terminals (mains terminals)
8 Interface for IF-Module
The selectable control modes are:
p-c:
The electronics keep the differential pressure created by the pump
above the permitted feed flow range constantly at the pre-selected
differential pressure setpoint H
(Fig. 15).
Q = Volume flow
H = Differential pressure (min./max.)
H = Differential pressure setpoint
S
NOTE:
For further information about setting the control mode and the asso-
ciated parameters, see chapter 8 "Operation" on page 92 and chapter
9.4 "Setting the control mode" on page 108.
p-v:
The electronics linearly change the differential pressure setpoint to
be kept by the pump between the delivery heads H
differential pressure setpoint H
ume flow (Fig. 16).
Q = Volume flow
H = Differential pressure (min./max.)
H = Differential pressure setpoint
S
NOTE:
For further information about setting the control mode and the asso-
ciated parameters, see chapter 8 "Operation" on page 92 and chapter
9.4 "Setting the control mode" on page 108.
NOTE:
A differential pressure sensor is needed for the control modes that are
being performed ( p-c and p-v) which sends the actual value to the
electronic module.
NOTE:
The pressure range of the differential pressure sensor must match the
pressure value in the electronic module (menu <4.1.1.0>).
up to the maximum pump curve
s
and ½ H
s
decreases or increases with the vol-
s
WILO SE 10/2017
. The
s