System Operating Mode; Operation (2 - Grundfos Control MPC Installation And Operating Instructions Manual

8.5 Operation (2)

In this menu, you can set the basic parameters, such as setpoint,
operating mode, control mode and individual pump control.
8.5.1 Operation (2)
A
C
Fig. 17 Operation
Description
The column shows the setting range. In closed-loop control, it
corresponds to the range of the primary sensor, here 0-16 bar.
In open-loop control, the setting range is 0-100 %.
At the left hand of the column, the selected setpoint 1 (A) is
shown, i.e. the value set in the display. At the right hand of the
column, the actual setpoint (B) is shown, i.e. the setpoint acting
as reference for the PI controller. If no kind of external setpoint
influence has been selected, the two values will be identical. The
measured value (discharge pressure) is shown as the grey part of
the column (C). See sections
8.7.5 External setpoint influence
and
(4.1.3) 8.7.6 Setting of influence function
Below the display is a menu line for setting of setpoint 1 and
selection of operating mode, including the operating modes
"Normal" and "Stop". It is possible to select further settings:
system operating mode, control mode, setpoints for closed and
open loop and individual pump control.
Setting range
Setpoint:
Closed-loop control: Measuring range of the primary sensor
Open-loop control: 0-100 %
Setting via control panel
Setpoint
• Operation > Set setpoint 1, open loop / Set setpoint 1, closed
loop.
Set the value.
Operating mode
• Operation
Select: Normal / Stop.
Further settings
• Operation > Further settings.
18
Select one of the settings below:
•

System operating mode

(see section 8.5.2).
• Control mode
(see section 8.5.3).
• Alternative setpoints
(see section 8.5.4).
• Individual pump control
(see section 8.5.6).
Factory setting
The setpoint is a value suitable for the system in question. The
factory setting may have been changed in the start-up menu.
8.5.2 System operating mode (2.1.1)
B
Fig. 18 System operating mode
Description
The system can be set to six different operating modes. "Normal"
(4.1.3.2).
is the typical setting. See section
The performance of these operating modes can be set in this
menu:
• Max.
• Min.
• User-defined
• Emergency.
Setting range
• Normal
• Max.
• Min.
• User-defined
• Stop
• Emergency.
Setting via control panel
• Operation > Further settings > System operating mode >
Operating mode.
Select the desired line at the bottom of the display to set the
performance for min., max., user-defined duty or emergency run.
See sections
and
8.7.25 Emergency run
Factory setting
Normal.
8.4.3 Operating mode
8.7.35 Min., max. and user-defined duty (4.3.14)
(4.3.5).
(1.2.1).