Differential Pressure Control Modes - Wilo Stratos PARA Série Notice De Montage Et De Mise En Service

6.1.1 Differential pressure control modes

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
• ∆p-v: The electronics change the differential pressure setpoint to be kept by
the pump linearly between ½H
decreases or increases with the flow rate (Fig. 6).
6.2 Operation of the pump (Fig. 1)
The central control element, the "red button" (Pos. 4) with three selection
ranges is situated on the front side of the control module (Pos. 5).
• Selection range (Pos. 1):
• Selection range (Pos. 2):
• Selection range (Pos. 3):
NOTE:
Minimum and maximum adjustment values for the delivery head at the ∆p-c and
∆p-v control modes are dependent on the pump type and can be read in the
pump curve.
• If the delivery head setpoint set with the red button falls below the minimum
adjustment value, the pump will run at the minimum adjustment value H
the appropriate control mode.
• If the delivery head setpoint set with the red button exceeds the maximum
adjustment value, the pump will run at the maximum adjustment value H
Installation and operating instructions Wilo-Stratos PARA
up to the maximum pump curve (Fig. 5).
S
and H . The differential pressure setpoint H
S S
Analogue input 0 - 10 V is activated.
Functions linked to the analogue control signal are
displayed in Fig. 7 (factory default settings).
The ∆p-c control mode is active.
The ∆p-v control mode is active.
English
in
min
.
max
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