Grundfos Conex DIA-G Instrucciones De Instalación Y Funcionamiento página 26

Connection example 2:
In this example, the termination resistors
at both sensor interfaces must be set to 1
= On.
Note
Terminals 21 and 22 on the Conex
have two cables. Twin ferrules must be
used for connections at these terminals.
Sensor interface 1
CAN
S1 S2
1
1 2 3 4 5 6 0
9 1
2
8
3
7
0 6 5 4
H L H L
ADDR
12
11
5
ADDR = CAN address
Fig. 13 Connection example 2
Connect the screening to screen ground
Caution
on one side only!
Pos. Component
1 Brown
2 White
5 Screen
11 Yellow
12 Green
The wire colours refer to the Grundfos cable.
26
®
DIA-G
®
Conex DIA-G
1
L
24 V DC
7 8 9 10
-
+
- -
+ +
2
1
S1
0
H
Sensor interface 2
S1
1
1
H
L 0
H
12
Sensor interface 1:
Signal and screen:
• H: Connect the green wire to terminal 25.
• L: Connect the yellow wire to terminal 23.
• Screen: Connect the screen to terminal 27.
Voltage supply:
• Connect the brown wire (+) to terminal 21.
• Connect the white wire (-) to terminal 22.
Addressing:
• The sensor interface address is specified on the
round selection switch for the CAN address (S2
ADDR) as follows:
– Sensor interface 1: address 1
– Sensor interface 2: address 2
• Set the address by turning the switch using a
small screwdriver
Termination resistor:
• Termination resistors ensure fault-free
measurement for the sensors via the CAN
interface. The termination resistor (S1) is fitted
on the last devices in the row and set to 1 = On.
A second sensor interface can be
connected either to the Conex
Note
to the first sensor interface. See the
connection examples.
S2 24 V DC
CAN
2 3 4 5 6 0 7 8 9 10
9 1
2
8
3
7
6 5 4
-
+ +
L H L
ADDR
2
1
11
5
®
DIA-G or
-