Robur GAHP-W, Installation, Use And Maintenance Manual, Page: 43 / 68

Electrical connections
Ed. 2014-08
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max).
The DDC can be installed anywhere in the CAN-bus line.
CAN-bus cable specifications
The CAN bus cable must meet the Honeywell SDS standard.
The installation of a cable which is not compliant with the Robur specifications will
void the manufacturer’s warranty.
Below is a table listing the cable types which meet the Robur specifications.
NAME OF CABLE SIGNALS / COLOUR MAX LENGTH Note
Robur
ROBUR NETBUS H= BLACK L= WHITE GND= BROWN 450 m
- - - - - - - - - -
Honeywell SDS 1620
BELDEN 3086A
TURCK type 530
H= BLACK L= WHITE GND= BROWN 450 m
DeviceNet Mid Cable
TURCK type 5711 H= BLUE L= WHITE GND= BLACK 450 m
Honeywell SDS 2022
TURCK type 531 H= BLACK L= WHITE GND= BROWN 200 m
In all cases,
the 4th wire
is not used
Table 20 - Example of types of cable that may be used for CAN bus connection
“GND” it is NOT a ground connection.
A shielded cable 3 x 18 AWG can be used ONLY if the total length of the CAN-bus
cable is shorter than 650 ft. and if the nodes are less than 6.
Connection of the CAN-bus cable to the board of the appliance
Connect the CAN-bus cable to the appropriate connector (D) on the electronic board.
See Figure 22.
1.
Remove the protection tape of the cable (approx. 3 inches). Do not damage the
shield and the wires.
2. Pull back the shield and tape it as indicate in Figure 22 letter A.
3. Connect the wires in the CAN-bus connector D.
•
If the appliance is a “ terminal” node, connect the cable as shown in Figure 21-
A. Keep to the sequence L, H, GND. Close jumpers J1.
•
If the appliance is an “ intermediate node”, connect the cable as shown in
Figure 21-B. Respect to the sequence L, H, GND. Open jumpers J1.
4. Fix the CAN bus cable to the clamp as indicate in Figure 22 letter C.