Electrical Connections; Connecting The Signal Lines For Ddi - Grundfos DDI 222 Instrucciones De Instalación Y Funcionamiento

6. Electrical connections

Make sure that the pump is suitable for the electricity supply on
which it will be used.
Warning
Electrical connections must only be carried out by
qualified personnel!
Disconnect the power supply before connecting the
power supply cable and the relay contacts!
Observe the local safety regulations!

6.1 Connecting the signal lines for DDI 222

Fig. 16 DDI 222 connection diagram
6.1.1 Diaphragm leakage signal / (pressure sensor - Flow Monitor)
Socket 1
For diaphragm leakage signal (MBS) and/or pressure sensor (Flow Monitor pump option).
The diaphragm leakage signal and pressure sensor are pre-assembled with an M12 plug for socket 1.
• Connect the cables according to the table below.
Socket 1
Pin Assignment
1 + 5 V
3 Pressure sensor input
4 MBS input
5 GND
6.1.2 Current output / Flow Monitor (pressure sensor)
Socket 2
For pressure sensor for Flow Monitor option.
The pressure sensor is supplied ready-made with M12 plug for socket 2 or socket 1.
The current output indicates the current dosing flow and can be weighted independently of the selected operating mode.
See section 9.6.4 Weighting of current input/output
Pressure sensor (Flow Monitor):
If socket 2 is also used for current output, the
pressure sensor can be either connected to socket 1
Note
or preferably together with the current output to
socket 2 using the plug set (product number
96645265 (321-327)).
Socket 2
Pin Assignment
1 + 5 V
3 Pressure sensor input
4 Current output
5 GND
Caution
2
3
3
2
2
3
5
2
1
3
5
Diaphragm leakage signal (MBS)
Black
Green/yellow
.
Cable
Wire colour
Brown
Blue
Black
Green/yellow
Warning
The pump housing must only be opened by
personnel authorised by Grundfos!
Warning
Protect the cable connections and plugs against
corrosion and humidity.
Only remove the protective caps from the sockets
that are being used.
The power supply must be electrically isolated from
the signal inputs and outputs.
1 2
1
6
4
3
Optional optional
4
5
1 1
2
4
4 4
3
1 3
4
5
4
1
Used for / wire colours
Pressure sensor
Used for
+/- current output
+
-
x
x
x
Pressure sensor
x
x
x
17