Grundfos Control MPC Montage- Und Betriebsanleitung Seite 37

8.6.11 S-system configuration (4.1.8)
S-system configuration
Description
The function allows you to invert the control of mains-operated
pumps (MPC-S). That is, to set whether pumps are to be started
or stopped depending on the actual value.
A start/stop band must be set in order to use this function. See the
table below.
Normal and inverse control
Normal control
A pump is stopped when the
value becomes higher than H
set
+ start/stop band. And a pump is
started when the value becomes
lower than H .
set
Y
A
C
H set
B
X
Pos. Description
A Pump stops
B Pump starts
C Start/stop band
X Time [sec]
Y H [m]
Setting range
• Selection of configuration (Normal or Inverse).
• Start/stop band.
Setting via the operating panel
• Settings > Primary controller > S-system configuration.
1. Select: Normal or Inverse.
Inverse control
A pump is started when the
value becomes higher than H
set
+ start/stop band. And a pump is
stopped when the value
becomes lower than H .
set
Y
B
C
H set
A
X
2. Set: Start/stop band.
Factory settings
Normal.
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