Connection Diagram For The Ar Control Unit - Grundfos AR Installation And Operating Instructions, Supplement

7.2 Connection diagram for the AR control unit

2
2
3
1
4
2
2
3
3
1
5
4
1 3
Connection diagram
Fig. 7
7.2.1 Diaphragm leakage detection / dosing controller
Socket 1
For diaphragm leakage detection (MBS) and/or dosing controller
(DC).
The diaphragm leakage detection and dosing controller are
pre-assembled with an M12 plug for socket 1.
If the diaphragm leakage sensor and the dosing controller are to
be used at the same time, both cables must be assembled in one
plug.
Warning
For the connection of one cable, use a plug adapter
with simple cable entry, for the connection of two
cables, use a plug adapter with double cable entry,
otherwise the protection will be lost!
• Connect the cables according to the following table.
Socket 1
Pin Assignment
1 +12 V
2 MBS/GND
3 MBS supply
4 Dosing controller output
5 MBS output
* MBS is an abbreviation of the function in German language "Membranleckagesignalisierung" = diaphragm leakage detection
7.2.2 Current output / remote on/off
The current output is not designed for controlling
Caution
secondary pumps in master/slave operation.
Socket 2
For the remote on/off input and current output.
Socket 2
Pin Assignment
1 +5 V
2 Remote on/off input
3 GND
4 Current output
4
5
2
3
1
1
4
3
1
4
2
Diaphragm leakage detection (MBS)*
Cable 0.8 m
Green/yellow
Wire colour
Used for / wire colour
Cable 3 m
(without plug)
White White
Blue Yellow
Green
Cable
+/- current output
Brown
White
Blue
Black
Dosing controller
Brown
Blue
Used for
Remote on/off
+
x
x
-
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