Grundfos Control MPC Montage- Und Betriebsanleitung Seite 60

8.6.48 Reduced operation (4.3.24)
Reduced operation
Description
The function allows you to limit the number of pumps in operation,
or for MPC-E systems, to limit power consumption. The limit is
activated by a digital input.
Setting range
• Setting of digital input, see section Digital inputs (4.3.7).
• Setting of digital output, see section Digital outputs (4.3.9).
• Maximum number of pumps in operation.
• Maximum power consumption.
Setting via the operating panel
• Settings > Secondary functions > Reduced operation.
1. Select: Go to setting of digital input.
2. Select digital input.
3. Select: Reduced operation.
4. Press × 2.
5. Select: Go to setting of digital output.
6. Select digital output.
7. Select: Reduced operation.
8. Press × 2.
9. Set: Number of pumps in operation or Power consumption.
Factory settings
No digital input is selected (disabled).
Related information
8.6.28 Digital inputs (4.3.7)
8.6.33 Digital outputs (4.3.9)
60
8.6.49 Multisensor settings (4.3.25)
Multisensor settings
Description
The function is designed for controlling up to six different zones in a
HVAC system with a defined differential-pressure band. If one of the
Multisensor signals are outside the specific sensor limits (minimum
or maximum), the function will influence the setpoint (SP) up or
down to ensure that the specific sensor or zone is kept within its
pressure band.
You can adjust the reaction of the setpoint influence by the means
of dedicated Setpoint alternation, Kp and Ti values.
In case more sensors are either under or above their limits, you can
set a priority between the sensors. Furthermore, the system can
optimise the actual setpoint if Energy-saving mode is activated by
reducing the actual setpoint until the minimum limit of one of the
multisensors is reached.
If the multisensor function is enabled, it will have higher
priority and the following programs will be overruled:
• Clock program
• Proportional pressure
• Alternative setpoints
• External setpoint influence
• Setpoint ramp.
Setting range
• Energy-saving mode: In this mode, the system ramps down
the actual setpoint towards the minimum limit for one of the
multisensors. If disabled, the function ensures that no sensor is
above or below its limits.
• Setpoint limits: The range with the function will operate the
control setpoint up or down according to the Multisensor
feedback.
• Multisensor list: Setup for each multisensor.
Setting via the operating panel
• Settings > Secondary functions > Multisensor settings.
1. Select: Enable.
2. Set: Number of sensors.
3. Enable Energy-saving mode if requested.
4. Set: Setpoint limits. (Select: Minimum limit or Maximum
limit).
5. Press Multisensor settings to set the individual settings for
each multisensor.