Raymarine RL70C Manuale Utente
Chapter 8: Installation
147
8.4 Cable Runs
You need to consider the following before installing the system cables:
–
You need to fit the power cable and, on a master display, the inter-unit
cable. Additional cables will be required if you are installing an integrated
system.
cable. Additional cables will be required if you are installing an integrated
system.
–
All cables should be adequately cleated and protected from physical
damage and exposure to heat - avoid running cables through bilges or
doorways, or close to moving or hot objects.
damage and exposure to heat - avoid running cables through bilges or
doorways, or close to moving or hot objects.
–
Acute bends must be avoided
–
Where a cable passes through an exposed bulkhead or deckhead, a
watertight gland or swan neck tube should be provided.
watertight gland or swan neck tube should be provided.
You need to run the following cables:
• Power/NMEA Input cable, supplied with the display unit. This has a
connector plug at one end for connecting the display unit, and 7 cores at the
other end for connecting the power supply and (optionally) NMEA inputs
(see Section 8.8).
other end for connecting the power supply and (optionally) NMEA inputs
(see Section 8.8).
• Inter-unit cable, supplied with the scanner unit. This is Vinyl-covered and
shielded, with a connector plug at one end for connecting to the display unit
or extension cable.
or extension cable.
• SeaTalk cable, optional, with SeaTalk connector(s) at one or both ends.
• HSB cable, optional.
• NMEA Output cable, optional, with a NMEA OUT connector at one end
only.
Power Cable
The HSB Series display is intended for use on ships’ DC power systems
operating in the 10.7 to 44 V DC range (that is, 12 V, 24 V systems and 32 V
systems). If the display is a master connected to a 2D or 4D radome scanner
only a 12 V or 24 V system must be connected. A 1.5 m (5 ft) power cable is
supplied for connecting the ship’s DC power to the radar via the display unit.
operating in the 10.7 to 44 V DC range (that is, 12 V, 24 V systems and 32 V
systems). If the display is a master connected to a 2D or 4D radome scanner
only a 12 V or 24 V system must be connected. A 1.5 m (5 ft) power cable is
supplied for connecting the ship’s DC power to the radar via the display unit.
If a longer power cable run is required, use the supplied power cable to connect
to the display unit. Then use a suitable connector block to connect the free end
to the extension cable, taking particular care to ensure correct polarity. The
supplied power cable has a cross-section of 2.0 mm
to the display unit. Then use a suitable connector block to connect the free end
to the extension cable, taking particular care to ensure correct polarity. The
supplied power cable has a cross-section of 2.0 mm
2
.
In particular, for radar systems on vessels with 12 V power systems, longer
power cable runs may require larger wire gauges to minimise any voltage drop
in the cable. The scanner type and the length and type of the inter-unit cable also
affect the wire gauge required for the extension power cable.
power cable runs may require larger wire gauges to minimise any voltage drop
in the cable. The scanner type and the length and type of the inter-unit cable also
affect the wire gauge required for the extension power cable.
Cable Runs