Alternative Setpoints (2.1.3); Individual Pump Control (2.1.4) - Grundfos Control DDD Montage- Und Betriebsanleitung

8.5.3 Alternative setpoints (2.1.3)

Fig. 34 Alternative setpoints
Description
In addition to the primary setpoint 1 shown in display 2 in the
"Operation" menu, you can set six alternative setpoints for
primary control.
You can to activate one of the alternative setpoints by means of
external contacts. See sections
and 8.7.4 Alternative setpoints 2-7 (4.1.2.1 -
Setting range
The setting range of setpoints for the primary controller depends
on the range of the primary sensor. See section
sensor (4.1.4).
Setting via the operating panel
• Operation > Further settings > Alternative setpoints.
Set the setpoint.
Factory setting
Setpoint 1 is set to 3 bar.
8.7.3 Alternative setpoints (4.1.2)
4.1.2.7).
8.7.7 Primary

8.5.4 Individual pump control (2.1.4)

Fig. 35 Individual pump control
Description
You can see the status and operating mode of the pumps.
If set to manual operation, the pumps will not be
controlled by CU 354.
Auto
The pumps are controlled by the PI controller, ensuring that the
system delivers the required performance.
Manual
The pump is not controlled by the PI controller, but set to one of
the following manual operating modes:
• Normal
– The pump runs at a set speed.
• Stop
– The pump has been forced to stop.
Pumps in manual operation are not part of the normal pump
cascade and speed control. The manually operated pumps are a
'disturbance' to the normal operation of the system.
If one or more pumps are in manual operation, the system may
not be able to deliver the set performance.
There are two displays for the function. In the first display, the
pump to be set is selected, and in the next display, the operating
mode is selected.
Setting range
All pumps can be selected.
Setting via operating panel
Operation > Further settings > Individual pump control.
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