Robur GAHP-W, Installation, Use And Maintenance Manual, Page: 42 / 68

GAHP-W – Installation, start-up, use and maintenance manual
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Edition: 2014-08
Figure 19 - Connection of water pumps with more than one appliance
3.3 OPERATION OF THE APPLIANCE THROUGH ROBUR DIRECT
DIGITAL CONTROLLER (DDC)
Refer to the pertinent manuals for specific information on the DDC.
The appliance and the DDC are connected via a CAN-bus network.
Example of CAN-bus connections (see Figure 19):
1.
One appliance (A) and one DDC. The two devices are “terminal” nodes.
2. Two (or more) appliances (A and B) and one DDC. Appliance “A” is a “terminal”
node as well as the DDC. Appliance “B” is an “intermediate” node.
Figure 20 - Examples of CAN-bus connections
One DDC can control and up to 16 GAHP-W and W-LB units.
On the same CAN-bus line it is possible to connect up to three DDC’s (48 units
A
GAHP-W
CAN-BUS CABLE
DDC
CAN-BUS CABLE
DDC
A
GAHP-W
CAN-BUS CABLE
B
GAHP-W