Control Modes - Wilo Stratos PARA/-Z Serie Notice De Montage Et De Mise En Service

6.2.3 Control modes

Constant differential pressure (p-c):
H
H max
Hs
H min
The electronics keep the differential
pressure created by the pump constant
above the permitted flow range at the
selected differential pressure setpoint
H up to the maximum pump curve.
S
6.2.4 Control signals 0...10V, PWM
The functions associated with the analogue control signal 0-10V and the available PWM
logic are described in the following section.
Control input "Analogue In 0...10V"
with cable break detection:
n/
1
/min
n
max
n
min
Off
0,5 1
0.5 V < U < 1 V: Pump stops
2 V < U < 3 V:
1 V < U < 3 V:
3 V < U <10 V:
U < 0.5 V:
Installation and operating instructions Wilo-Stratos PARA/-Z
2 3 10
Pump runs at minimum
speed (starting)
Pump runs at minimum
speed (operation)
Speed varies between
n and n (linear)
min max
Cable break detection,
the pump runs at mini-
mum speed (emer-
gency operation)
Variable differential pressure (p-v):
H
H max
Hs
1
/ Hs
2
H min
Q
The electronics change the differential
pressure setpoint to be maintained by the
pump in linear form between ½H
The differential pressure setpoint H
decreases or increases with the flow rate.
without cable break detection:
n/
1
/min
n
max
n
min
Off
U/V
1
U < 1 V:
2 V < U < 3 V:
1 V < U < 3 V:
3 V < U <10 V:
and H
S
2 3 10
Pump stops
Pump runs at minimum
speed (starting)
Pump runs at minimum
speed (operation)
Speed varies between
n and n (linear)
min max
English
Q
.
S
U/V
33