Control Mode Explanation; Proportional Pressure - Grundfos UPM3 Installation And Operating Instructions Manual

7.4.1 UPM3 HYBRID
This pump is either externally controlled with PWM signal with
profile A or C or internally with three control modes with
AUTO (AA).
ADAPT
LED1
Control mode
green
PP AA ●
CP AA
PP1 ●
PP2 ●
PP3 ●
CP1
CP2
CP3
CC1
CC2
CC3
PWM C signal off
PWMC signal on
PWM A
1
●
curve 1 signal off
PWM A curve 1 signal on ● 2
PWM A curve 2 signal off 1
●
2
PWM A curve 2 signal on ●
PWM A curve 3 signal off ● 1
PWM A curve 3 signal on 2
●
1 1 flash per second.
2 12 flashes per second.
7.4.2 UPM3 FLEX AS and UPM3 DHW
This pump is either externally controlled with a PWM A profile signal
control or speed selection.
The maximum curve of the pump operating range can be defined.
• With PWM signal, the pump runs at the corresponding speed.
• Without PWM signal, the pump runs at maximum speed.
LED1
PWM A profile
green
PWM A curve 1 signal off ●
1
PWM A
2
●
curve 1 signal on
PWM A
1
●
curve 2 signal off
PWM A
2
●
curve 2 signal on
PWM A
1
●
curve 3 signal off
PWM A
2
●
curve 3 signal on
1 1 flash per second.
2 12 flashes per second.
7.4.3 UPM3 SOLAR
This pump is either externally controlled with PWM signal control
with profile C or internally on constant curve mode.
LED2 LED3 LED4 LED5
green yellow yellow yellow
●
●
● ●
● ● ●
● ●
● ● ●
● ● ● ●
●
● ●
● ● ●
1 ● ● ●
●
2
● ● ● ●
●
●
● ●
● ●
● ● ●
● ● ●
LED2 LED3 LED4 LED5
green yellow yellow yellow
●
●
● ●
● ●
● ● ●
● ● ●
LED1 LED2
Control mode
green green
CC1
CC2
CC3
PWM C signal off ●
PWM C signal on
●
1 1 flash per second.
2 12 flashes per second.
7.4.4 UPM3 AUTO
This pump is internally controlled with three control modes with
AUTO (AA).
ADAPT
LED1 LED2
Control mode
green green
PP AA ●
CP AA ●
PP1 ●
PP2 ●
PP3 ●
CP1 ●
CP2 ●
CP3 ●
CC1
CC2
CC3
7.4.5 UPMO
This pump is internally controlled with control mode CC or
externally with PWM signal control with profile A.
The pump automatically enables the PWM input-signal control
mode by SignalDetect when the signal cable is plugged in.
LED1 LED2
Control mode
green green
CC1
CC2
CC3
1
PWM A ●
1 12 flashes per second.
If the pump does not detect a PWM signal or if the signal equals 0,
the pump returns to its previous control mode.

7.5 Control mode explanation

7.6 Proportional pressure

The head (pressure) is reduced at falling heat demand and
increased at rising heat demand.
The duty point of the pump moves up or down on the selected
proportional-pressure curve depending on the heat demand in the
system.
• PP1: lowest proportional-pressure curve
• PP2: intermediate proportional-pressure curve
• PP3: highest proportional-pressure curve
• AUTO : highest to lowest proportional pressure curve.
ADAPT
LED3 LED4 LED5
yellow yellow yellow
●
● ●
● ● ●
1 ● ● ●
2 ● ● ●
LED3 LED4 LED5
yellow yellow yellow
●
● ●
● ● ●
●
● ●
● ● ●
●
● ●
● ● ●
LED3 LED4 LED5
yellow yellow yellow
●
● ●
● ● ●
● ● ●
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