15
Cable shielding
Ensure that all data cables are properly shielded that the cable shielding is intact (e.g. hasn’t been
scraped off by being squeezed through a tight area).
4.4
Power connection
Connection to the power supply is possible both through the universal power/data connector and
directly via the NMEA2000 bus. The NMEA2000 bus specification provides power for devices
connected to the bus. If only the NMEA2000 bus is used and the NMEA0183 bus is not used, then the
universal power/data connector can be not used.
1.
Power/data M12 8-pin connector (supplied)
2. Power supply – (Negative) Black wire (not supplied)
3. Power (Positive) Red wire (not supplied)
4. Inline waterproof fuse 2A (supplied)
5. Suitable waterproof connection (not supplied)
6. Power source (12/24 V dc) (not supplied)
Power cable
Ensure you observe the following advice:
• The power cable for each unit in your system should be run as a separate, single length of 2-wire
cable from the unit to the vessel's battery or distribution panel.
• For power cable extensions, it is recommended that a
minimum
wire gauge of 16 AWG (1.3 mm
2
).
For cable runs longer than 15 meters, you may need to consider a thicker wire gauge (e.g. 14 AWG
(2.1 mm
2
), or 12 AWG (3.3 mm
2
) ).
Important:
Be aware that some products in your system (such as sonar modules) can create
voltage peaks at certain times, which may impact the voltage available to other products during
the peaks.
Important:
When connecting to a 24V dc power line, make sure that the line voltage does not
exceed the maximum allowable for the 28V device. The voltage in the power line may rise during
the battery charging process. If the voltage can exceed 28V, then it is necessary to use a step-
down voltage converter to reduce the supply voltage of the device to 12V, the output power of
the converter must be more than 15 watts.
Important:
Use only one power line connection. If you connect to the NMEA2000 bus via the
NMEA2000 Micro-C M12 5-pin connector, do not connect the power line through the universal
power/data connector.
Summary of Contents for AIS
Page 1: ......
