
Electrical installation
Instruction Manual AquaScat S
13798E/3
37
5.2.3
Connecting the AquaScat S to the Conn-R junction box
Figure 12: Standard terminals from the photometer
An 8-pin connector of type M12 x 1 with A-coding is used as standard. A shielded device
cable must be used for connection to the junction box. The following table can be used
when connecting an AquaScat S to the Conn-R junction box.
Description
Connector
pin (male)
AQ S
Wire color for
device cable
(art. no.
120444)
Conn-R
Remarks
Supply GND
1
white
1
24 VDC power
supply
2
brown
2
24 V ± 10%
RS-485 A
7
blue
3
Serial interface for
SICON (M)
RS-485 B
5
gray
4
Digital output 1
6
pink
5
Switches against 24 V
Digital output 2
4
yellow
6
Switches against 24 V
Current
8
red
7
The minus pole is con-
nected to GND. Max.
600 Ω burden
Current output -
3
green
8
Shielding
Screen
9
The housing is galvan-
ically isolated relative
to ground. The hous-
ing can be connected
to the ground poten-
tial via the shielding