B&G Zeus Touch 12 - Manual (Page 34)

34 | NMEA 2000 | Zeus Touch installation manual
Power the NMEA 2000 network
A NMEA 2000 network requires its own 12 V DC power supply protected by a 5 amp fuse or
breaker. For 24 V systems, use a DC-DC converter to supply 12 V
Connect power at any location in the backbone for smaller systems.
For larger systems introduce power at central point in the backbone to “balance” the voltage
drop of the network.
 Note:
If joining to an existing NMEA 2000 network or similar CAN bus network that already
has it’s own power supply, do not make another power connection.
 Note:
Do not connect the NMEA 2000 power cable to the same terminals as the start batter-
ies, Autopilot Computer, Radar, thruster or other high current devices.
The drawing below demonstrates a typical small network. The backbone is entirely made up
of T-piece joiners, which are terminated at each end.
12 V DC
T T
- +
T
Micro-C
Power
Terminator
In the larger system below, the backbone is extended by cable and is also daisy chained
through Triton displays.
+
_
12 V DC
T
T
1
5
4 3
2
6
1 NMEA 2000 power source. Stable 12 V DC only
2 5 Amp fuse or breaker
3 Switch
4 Power cable
5 Micro-C T-joiners
6 NMEA 2000 GPS antenna
7 NMEA 2000 backbone daisy chained using instruments with two ports.
8 NMEA 2000 Micro-C backbone