Grundfos AR Installation And Operating Instructions, Supplement page 10

7.2.3 Stroke signal / pre-empty signal / error signal
Use the stroke signal according to section
Note
8.10 Creating a master/slave application
secondary pumps.
Socket 3
Electrically isolated output for stroke signal or pre-empty signal
and error signal.
Socket 3
Pin Assignment
1 Error signal contact
2 Stroke signal or pre-empty signal contact
3 Stroke signal or pre-empty signal contact
4 Error signal contact
7.2.4 Remote on/off / contact input / current input
The current input is not designed for controlling a preceding
pump in master/slave operation. Instead, use the contact input
that controls socket 3 according to section
master/slave application.
Socket 4
For the remote on/off input and contact input or current input.
If remote on/off and contact input are to be used at the same
time, wire 1 is assigned twice.
For the connection of one cable, use a plug adapter
with simple cable entry, for the connection of two
Caution
cables, use a plug adapter with double cable entry,
otherwise the protection will be lost!
Socket 4
Pin Assignment
1 GND
2 Current input
3 Remote on/off
4 Contact input
7.2.5 Empty signal only / pre-empty and empty signal
Socket 5
For the empty signal only or pre-empty and empty signal input.
The suction lines with empty signal or pre-empty and empty
signal are pre-assembled with a plug for socket 5.
Socket 5
Pin Assignment
1 Empty signal
2 GND
3 Pre-empty signal
10
to control
Cable
Wire colour
Brown
White
Blue
Black
8.10 Creating a
Cable
Wire colour Remote on/off input
Brown
White
Blue
Black
Used for
Stroke signal /
pre-empty signal
x
x
Used for
Contact input
x x
x
x
Used for
Empty signal
x
x
Error signal
x
x
+/- current input
-
+
Pre-empty signal
x
x