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Chapter 3: Installation 25
Power supply connections
SeaTalk systems
CAUTION:
When instruments are connected to SeaTalk, ensure that the
power supply for the SeaTalk 12 V line is protected by a 5 A fuse.
Systems with a large number of instruments on the SeaTalk bus may require
connections to the power supply from each end of the system (ring-main style),
to maintain sufficient voltage throughout the system.
This requirement depends on the total length of the cable run and the total
number of instruments in the system, as follows:
Cable run No. of instruments Power connections
Up to 10 m 13 maximum
26 maximum
1
2
Up to 20 m 7 maximum
13 maximum
1
2
D4345-2
Blue
Red
Green
Yellow
Screen
Cable from Rotavecta
Cable from Wind Vane
SeaTalk cable
SeaTalk cable
Connections to ST60 Wind instrument
Blue
Red