Description of Pump Frofiles
a) INTERNAL CONTROL - Proportional pressure
• Head (pressure): reduced with growing system
pressure drop and increased with sinking
system pressure drop.
• Pump operating point: moves up or down on the selected proportional pressure curve
depending on the current system pressure drop.
CONTROL MODE
DESCRIPTION
Proportional pressure
I
The lowest curve of proportional pressure
II
The middle curve of proportional pressure
III
The highest curve of proportional pressure
AUTO
ADAPT
Automatically controls performance in the range from the
highest to the lowest proportional pressure curve
b) INTERNAL CONTROL - Constant pressure
• Head (pressure): kept constant, disregarded of
the system pressure drop.
• Pump operating point: moves on the selected constant pressure curve depending on the
current system pressure drop.
CONTROL MODE
DESCRIPTION
Constant pressure
I
The lowest curve of constant pressure
II
The middle curve of constant pressure
III
The highest curve of constant pressure
AUTO
ADAPT
Automatically controls performance in the range from the
highest to the lowest constant pressure curve
c) INTERNAL CONTROL - Constant speed
• The pump runs at constant speed.
• Pump operating point: moves up or down on the selected curve depending on the current
system pressure drop.
CONTROL MODE
Max. H (upper graph)
Max. P
1
(lower graph)
Constant speed
I
5 m
33 W
II
6 m
39 W
III
7 m
52 W
d) EXTERNAL CONTROL - PWM C (solar)
• The pump runs up to the max. head following the constant speed curve
set depending on the current PWM value.
• The speed will increase when the PWM value increases. If PWM equals 0, the pump will
stop.
e) EXTERNAL CONTROL - PWM A (heating)
WARNING – IT IS PROHIBITED TO USE PWM A PUMP PROFILES
Using the PWM A (I, II, III) pump profiles in a solar pump station would cause system damage.
