Setpoint (1.2.2); Setpoint Influence (1.2.3); Measured Values (1.2.4) - Grundfos Control DDD Montage- Und Betriebsanleitung

8.4.4 Setpoint (1.2.2)

Fig. 22 Setpoint
Description
The display shows the selected setpoint and whether it comes
from CU 354 or an external bus.
It also shows all seven possible setpoints from CU 354. At the
same time, the selected setpoint is shown.
As it is a status display, no settings can be made.
Setpoints can be changed in the "Operation" or "Settings" menu.
See section 8.7.3 Alternative setpoints

8.4.5 Setpoint influence (1.2.3)

Fig. 23 Setpoint influence
Description
The selected setpoint can be influenced by parameters. The
parameters are shown as a percentage from 0 to 100 % or as a
pressure measured in bar. They can only reduce the setpoint, as
the influence in percentage divided with 100 is multiplied with the
selected setpoint:
Actual setpoint (SP) = selected setpoint x influence (1) x
influence (2) etc.
The display shows the parameters influencing the selected
setpoint and the percentage or value of influence.
Some of the possible parameters can be set in the
setpoint influence (4.1.3) display. The parameter "Low flow boost"
is set as a start/stop band as a percentage of the setpoint set in
the Stop function (4.3.1) display. The parameter is set as a
percentage in the Proportional pressure (4.1.7)
Finally, the resulting actual setpoint (SP) is shown.
(4.1.2).
External
display.

8.4.6 Measured values (1.2.4)

Fig. 24 Measured values
Description
The display gives a general status of all measured and calculated
parameters. In DDD-E/-EC systems, the specific energy is shown
as an average value and actual value (mean value over the last
minute). The average value is based on the accumulated flow
shown as total volume. The total volume and specific energy
average can be reset in this display.
Discharge pressure
Actual value from sensors
Flow rate
Power consumption Current consumption for all pumps
Energy consumed by all pumps since
Energy consumption
startup (or latest reset)
Current energy used to pump 1 m
Specific energy, actual
water
Specific energy, Average energy used per m
average since startup (or latest reset)
Total volume pumped since startup (or
Total volume
latest reset)
If night flow monitoring is enabled, the
Average night flow display will show the average flow rate
of the latest monitoring period.
The lines "Power consumption", "Energy
consumption", "Specific energy, actual" and "Specific
energy, average" are only shown in DDD-E/-EC
systems.
3
of
3
of water
19