Raymarine Evolution EV-2, Installation Instructions Manual

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3.1 General cabling guidance
Cable types and length
It is important to use cables of the appropriate type and length
• Unless otherwise stated use only standard cables of the
correct type, supplied by Raymarine.
• Ensure that any non-Raymarine cables are of the correct
quality and gauge. For example, longer power cable runs may
require larger wire gauges to minimize voltage drop along the
run.
Routing cables
Cables must be routed correctly, to maximize performance and
prolong cable life.
• Do NOT bend cables excessively. Wherever possible, ensure
a minimum bend diameter of 200 mm (8 in) / minimum bend
radius of 100 mm (4 in).
100 mm (4 in)
200 mm (8 in)
• Protect all cables from physical damage and exposure to heat.
Use trunking or conduit where possible. Do NOT run cables
through bilges or doorways, or close to moving or hot objects.
• Secure cables in place using tie-wraps or lacing twine. Coil
any extra cable and tie it out of the way.
• Where a cable passes through an exposed bulkhead or
deckhead, use a suitable watertight feed-through.
• Do NOT run cables near to engines or fluorescent lights.
Always route data cables as far away as possible from:
• other equipment and cables,
• high current carrying ac and dc power lines,
• antennae.
Strain relief
Ensure adequate strain relief is provided. Protect connectors
from strain and ensure they will not pull out under extreme sea
conditions.
Circuit isolation
Appropriate circuit isolation is required for installations using
both AC and DC current:
• Always use isolating transformers or a separate power-inverter
to run PC’s, processors, displays and other sensitive electronic
instruments or devices.
• Always use an isolating transformer with Weather FAX audio
cables.
• Always use an isolated power supply when using a 3rd party
audio amplifier.
• Always use an RS232/NMEA converter with optical isolation
on the signal lines.
• Always make sure that PC’s or other sensitive electronic
devices have a dedicated power circuit.
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).
3.2 Power connection — EV-2
The power for the EV-2 unit is provided by the SeaTalk ng system.
• The EV-2 unit must be connected to a SeaTalk ng backbone.
This is typically achieved using a SeaTalk ng 5-way connector
block or T-piece connector.
• The SeaTalk ng system requires only ONE 12 V power source.
This can be provided by a battery. If your vessel has a 24 V
supply a suitable voltage convertor is required.
• The power source must be protected by a 5 A fuse or a circuit
breaker providing equivalent protection.
• SeaTalk ng cables carry both data and power signals. The
power is supplied to the EV-2 via a SeaTalk ng spur cable.
• Refer to the SeaTalk ng reference manual for more information
on general SeaTalk ng power requirements.
Power connection — Volvo Penta EVC
interface
The EVC interface unit requires a 12 V power source, which
must be provided to the EVC unit via a battery.
• If your vessel has a 24 V supply a suitable voltage convertor
is required.
• The power source must be protected by a 5 A fuse or a circuit
breaker providing equivalent protection.
• The EVC interface unit must be connected to the 12 V power
source via a SeaTalk ng 5-way connector block.
• A SeaTalk ng to bare ends power cable must be used to
connect the SeaTalk ng 5-way connector block to the 12 V
power source.
• The supplied DeviceNet to SeaTalk ng adaptor cable must be
used to connect the EVC interface unit to the SeaTalk ng 5-way
connector block. This cable carries both data and power
signals to the EVC unit.
20 Evolution EV-2