Description Of Functions For Pumps; Analog Inputs - Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual

13. Description of functions for pumps

13.1 Analog inputs

Available inputs depend on the functional module fitted in the
pump:
Function (terminal)
Analog input 1, setup (4)
Analog input 2, setup (7)
Analog input 3, setup (14)
* See section 8. Identification of functional
If you want to set an analog input for other purposes, you can do
this manually.
If you make the manual setting via Grundfos GO Remote, you
need to enter the menu for the analog input under the "Settings"
menu.
Function
The analog inputs can be set to the following functions:
• "Not active"
• "Feedback sensor"
The sensor is used for the selected control mode.
• "Ext. setpoint infl."
See section 13.7 External setpoint
• "Other function".
Measured parameter
Select one of the parameters listed below as the parameter to be
measured by the sensor connected to the actual analog input.
See fig. 39.
5
11
1 3 13
DPT
PT PT TT
2 4
DPT DPT
9
LT
Fig. 39 Overview of sensor locations
Sensor function/measured parameter
"Inlet pressure"
"Diff. press., inlet"
"Discharge press."
"Diff. press.,outlet"
"Diff. press, pump"
"Press. 1, external"
"Press. 2, external"
"Diff. press., ext."
"Storage tank level"
"Feed tank level"
"Pump flow"
"Flow, external"
"Liquid temp."
"Temperature 1"
"Temperature 2"
FM 300*
(advanced)
●
●
●
module.
function.
6 14
Q
PT TT
12
8 16 15
7
Q
DPT DTT
PT TT
10
LT
Pos.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Sensor function/measured parameter
"Diff. temp., ext."
"Ambient temp."
"Other parameter"
Unit
Parameter Possible units
Pressure bar, m, kPa, psi, ft
Level m, ft, in
Pump flow
m³/h, l/s, yd³/h, gpm
Liquid temperature °C, °F
Other parameter %
Electrical signal
Select signal type:
• "0.5-3.5 V"
• "0-5 V"
• "0-10 V"
• "0-20 mA"
• "4-20 mA".
Sensor range, minimum value
Set the minimum value of the connected sensor.
Sensor range, maximum value
Set the maximum value of the connected sensor.
Factory setting
See section 29. Factory settings.
13.1.1 Setting two sensors for differential measurement
To measure the difference of a parameter between two points, set
the corresponding sensors as follows:
Analog input for
Parameter
sensor 1
Differential
Pressure, option 1
pressure, inlet
Pressure 1,
Pressure, option 2
external
Flow Pump flow
Temperature Temperature 1
If you want to use the control mode "Constant
differential pressure", you must choose the function
"Feedback sensor" for the analog input of both
sensors.
Pos.
16
Not shown
Not shown
Analog input for
sensor 2
Differential
pressure, outlet
Pressure 2,
external
Flow, external
Temperature 2
23