Grundfos CONTROL MPC, Инструкция по установке и эксплуатации

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8.7.29 Analog inputs (4.3.8.1 to 4.3.8.7)
Fig. 75 Analog inputs
Description
Analog inputs can be set. Each display is divided into three parts:
• Setting of input signal, for instance 4-20 mA
• Measured input value, for instance discharge pressure
• Measuring range of the sensor/signal transmitter, for instance
0-16 bar.
Setting range
It is possible to set the following parameters in each display:
• Not used
• Range of input signal, 0-20 mA, 4-20 mA, 0-10 V
• Measured input value
• Sensor range.
Setting via control panel
• Settings > Secondary functions > Stop function > Analog
inputs.
Factory setting
8.7.30 Analog inputs and measured value
(4.3.8.1.1 - 4.3.8.7.1)
Fig. 76 Analog inputs and measured value
Description
A function can be related to the individual analog inputs.
Setting range
It is possible to select one function per analog input. For further
details, see section
9. Measuring parameters
.
• Not used
• 0-100 % signal
• Inlet pressure
• Discharge pressure
• External pressure
• Diff. pressure, pump
• Flow rate 1 - 3
• Tank level, discharge side
• Tank level, suction side
• System pressure
• Diff. pressure, external
• Tank precharge pressure
• Diff. pressure, inlet
• Diff. pressure, outlet
• Return-pipe temp., external
• Flow-pipe temperature
• Return-pipe temperature
• Differential temperature
• Ambient temperature
• Power, pump 1 - 6
• Power, VFD.
Setting via control panel
• Settings > Secondary functions > Stop function > Analog
inputs.
1. Select analog input.
2. Select: Measured input value.
Display 4.3.8.1.1 appears.
3. Select input.
4.
.
5. Set the minimum and maximum sensor value.
Note
If an analog input is deactivated, the display will only
show the top part, i.e. the setting of the analog input.
If the input is activated, the middle part, "Measured
input value", will be shown. This makes it possible to
relate a function to the analog input in another
display. When the analog input has been related to a
function, the CU 352 will return to the display for
setting of analog inputs.
Pressure boosting
Analog input Function
AI1 (CU 352) [51] Discharge pressure
Heating and cooling
Analog input Function
AI1 (CU 352) [51] These are selected in the start-up wizard
Note
If more flow rates are used, the flow rate measured
and shown will be the sum of defined flow rates.