Yanmar 6LY3 series, Technical Manual

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Electronic Control System: Technical Manual for 6LY3 Series Engines
NMEA 2000® Network
Cables
The Cabling that is used conforms to the DeviceNet standard and was developed for Industrial applications.
In general the cables are molded and the connection area is sealed with o-ring gaskets to provide a good
seal from the environment. The cables are available in a variety of lengths.
Warning
The cables must not be cut or spliced.
Warning
When securing the cables and especially when tying down a number of direct connected “T’s” never pull
them down so tight as to cause strain or put a curve in the T’s as this may cause a failure.
When installing a NMEA 2000 Can Bus system there are several things to keep in mind.
• The cable ends are male and female. To avoid a mismatch it is best to work from one end
toward the other. If you must work from both ends toward the middle assure that the mating
point will be a male / female connection.
• It is wise to plan for expansion. With so many new NMEA 2000 products entering the
market and the ability to connect on to the bus for testing it is sometimes wise to use two
cables where one would suf
fi ce. The connection of the two cables can later be separated so
additional “T’s” can be inserted to add another product or test equipment.
Powering the bus
The Can Bus requires power be supplied. The voltage range is 10 to 16 volts. The power may be supplied
by one or more of the products on the Data Bus or from as separate source. Yanmar strongly recommends
that the at least two independent sources are used to supply the data bus power. When installed per Yanmar
6LY3 installation instructions redundant power is supplied.