Wilo Stratos GIGA Notice De Montage Et De Mise En Service page 103

H
H
H
max
H
s
½ H
s
H
min
Fig. 7: Control mode Δp-v
H
H
n
max
n
min
Fig. 8: Constant speed
6.4 Twin-head pump function/Y-pipe
application
Fig. 9: Example – differential pressure sensor
connection in y-pipe installation
Installation and operating instructions • Wilo-Stratos GIGA, Wilo-Stratos GIGA-D, Wilo-Stratos GIGA B • Ed.01/2024-02
Q = Volume flow
H = Differential pressure (min./max.)
H = Differential pressure setpoint
S
Q
Q
Constant speed
The pump speed can be kept at a constant speed between n
mode deactivates all other control modes.
PID control
If other sensors are used or if the distance between the sensors and the pump is very large,
the standard control modes are not applicable. In these cases, the "PID-Control" function
(Proportional Integral Differential control) is available.
n = const
By selecting a good combination of individual control elements, the operator can ensure
max
fast-reacting, constant control without lasting setpoint deviations. The output signal of the
Q
selected sensor can accept any intermediate value. The relevant actual value reached (sensor
Q
signal) will be shown as a percentage on the status page of the menu (100 % = maximum
measurement range of the sensor).
The main pump controls both pumps.
In the event of a fault in one pump, the other pump runs according to the main pump's con-
trol input. In the event of a total breakdown of the main pump, the partner pump runs at the
emergency operation speed. The emergency operation speed can be set in menu <5.6.2.0>
(see section "Operation during interruption of communication").
The main pump's display shows the status of the twin-head pump. The partner pump's dis-
play shows "SL".
In the example, the main pump is the left-hand pump in the direction of flow. Connect the
differential pressure sensor to this pump!
The measuring points of the differential pressure sensor must be located in the collector pipe
on the suction and discharge side of the twin-head pump system.
NOTICE
A differential pressure sensor is needed for the control modes that are be-
ing performed (Δp-c and Δp-v) which sends the actual value to the elec-
tronic module.
NOTICE
The pressure range of the differential pressure sensor must match the
pressure value in the electronic module (menu <4.1.1.0>).
NOTICE
The displayed percent value only corresponds indirectly to the
current delivery head of the pump(s).
The maximum delivery head can even been reached at a sensor signal of
< 100 %.
NOTICE
The properties described in this section are only available if the internal
MP interface (MP = Multi Pump) is used.
en
und n . "Constant speed"
min max
103