Grundfos Control MPC 2000 Series, Installation And Operating Instructions Manual

Page: 23 / 528

English (GB)
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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)
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, you can see the selected setpoint
1 (A), that is the value set in the display. At the right hand of the
column, you can see the actual setpoint (B), that is 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 (outlet pressure) is shown as the
grey part of the column (C). See sections
8.7.5 External setpoint
influence (4.1.3) and 8.7.6 Setting of influence function (4.1.3.2) .
Below the display is a menu line for setting of setpoint 1 and
selection of operating mode, including the operating modes
"Normal" and "Stop". You can select further settings: "System
operating mode", "Control mode", "Alternative setpoints" and
"Individual pump control".
Setting range
Setpoint:
Setting via the operating panel
Setpoint
• Operation > Set setpoint 1, open loop / Set setpoint 1, closed
loop.
Set the value.
Operating mode
• Operation
Select: Normal or Stop.
Further settings
• Operation > Further settings.
Select one of the settings below:
• System operating mode. See section
8.5.2 System operating
mode (2.1.1) .
• Control mode. See section 8.5.3 Control mode (2.1.2) .
• Alternative setpoints. See section 8.5.4 Alternative setpoints
(2.1.3) .
• Individual pump control. See section 8.5.6 Pump 1-6 (2.1.4.1 -
2.1.4.6) .
Factory setting
The setpoint is a value suitable for the system in question. The
factory setting may have been changed in the startup menu.
8.5.2 System operating mode (2.1.1)
Fig. 18 System operating mode
Description
The system can be set to six different operating modes. "Normal"
is the typical setting. See section
8.4.3 Operating mode (1.2.1) .
You can set the performance of the operating modes in this
menu:
• Min.
• Max.
• User-defined
• Emergency.
Setting range
• Normal
• Max.
• Min.
• User-defined
• Stop
• Emergency.
Setting via the operating panel
• Operation > Further settings > System operating mode >
Operating mode.
Select the desired line at the bottom of the display to set the
performance for "Max.", "Min.", "User-defined" and "Emergency"
run. See sections
8.7.38 Min., max. and user-defined duty
(4.3.14) and 8.7.27 Emergency run (4.3.5) .
Factory setting
Normal.
Closed-loop control: Measuring range of the primary sensor
Open-loop control: 0-100 %
A
C
B