Power supply connections, Seatalk systems, Stand alone instruments – Raymarine ST60 User Manual
Page 30: Seatalk systems stand alone instruments
20
ST60 Rudder Angle Indicator Instrument Owner’s Handbook
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:
Stand alone instruments
Stand-alone instruments are not connected to SeaTalk and therefore need to be
connected to an alternative 12 V power source. Power cables are available in 2 m
and 9 m lengths.
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
D4311-1
5 A fused,
12 V dc supply
(typically provided
by autopilot)
Red
Screen
Red
Screen
1
2
3
4
Instruments
5 to 16
17
18
19
20
SeaTalk power connections