Furuno FI-302 User manual

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1Part specification...................................................................................................5
2Installation..............................................................................................................8
3Installing the instrument.......................................................................................9
3.1 Mount the transducer...................................................................................10
3.1.1 Correct location of paddlewheel transducer ............................................10
3.1.2 Installing the through hull fitting...............................................................11
3.1.3 Run and install the cables........................................................................12
3.1.4 Installing instrument to the Server ...........................................................13
3.1.5 Installing the transducer direct to the instrument.....................................13
3.1.6 Installing transducer to the Server...........................................................14
4First start..............................................................................................................15
4.1 Initialising the instrument .............................................................................15
4.2 Re-initialising the instrument........................................................................15
5Operation..............................................................................................................16
5.1 About this manual ........................................................................................16
5.2 How to use the push-buttons .......................................................................17
5.2.1 PAGE.......................................................................................................17
5.2.2 MINUS .....................................................................................................17
5.2.3 PLUS .......................................................................................................17
5.2.4 SET..........................................................................................................17
5.2.5 Clear / cancel / reset................................................................................18
5.2.6 Calibration................................................................................................18
5.2.7 Lighting ....................................................................................................18
6SPEED functions .................................................................................................19
6.1 SPEED main-function ..................................................................................19
6.2 SPEED sub-functions ..................................................................................19
6.2.1 TRIP LOG (TRP)......................................................................................19
6.2.2 TOTAL LOG (LOG)..................................................................................19
6.2.3 MAXIMUM SPEED (MAX)........................................................................19
6.2.4 START TIMER (STA)...............................................................................19
6.2.5 TIMER......................................................................................................19
6.2.6 AVERAGE SPEED (AVS)........................................................................19
6.2.7 DISTANCE (DST) ....................................................................................19
6.2.8 DEPTH (unit/DPT) Only in Nexus Network..............................................20
7Calibration............................................................................................................21
7.1 Calibration of speed C10 ............................................................................22
7.1.1 C10 Return (RET)....................................................................................22
7.1.2 C11 (Unit KTS).........................................................................................22
7.1.3 C12 (1.25 CAL)........................................................................................22
7.1.4 C13 DAMPING (SEA)..............................................................................22
7.2 C20, calibration of depth..............................................................................23
7.2.1 C20 (RET)................................................................................................23
7.2.2 C21 (Unit m) ............................................................................................23
7.2.3 C22 ( - 00.0 ADJ).....................................................................................23
7.2.4 C23 (Unit°C) ............................................................................................23
7.2.5 C24 (0°C TMP) ........................................................................................23
8Maintenance and fault finding............................................................................24
8.1 Maintenance ................................................................................................24
8.2 Fault finding .................................................................................................24
8.2.1 General....................................................................................................24
8.2.2 Fault - action............................................................................................25
9Specifications......................................................................................................25
9.1 Technical specifications...............................................................................25
9.2 Equipment Lists ...........................................................................................26

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1Part specification
Items delivered with the Instrument
Qty. Description Reference
1Instrument, FI-30 Speed Instrument 1
1Instrument front cover 2
1Drill template 3
1Operator’s Manual 4
2Pin bolts for instrument mounting 5
2Nuts for instrument mounting 5
1Tube of silicon grease 5
1Connection cover 5
24-pol screw terminal 5
1Power cable, red and black, 3 m (9 ft) 6
5Extra wire protectors, 0.25 mm (1/100") 7
5Extra wire protectors, 0.75 mm (1/32") 7
1Log transducer 8
1Through hull fitting and dummy plug 9

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Welcome aboard the Nexus Network!
Thank you for choosing FI-30 and welcome to the world of the Nexus Network.
Through this manual we would like to help you install, operate and understand your
new Nexus Network.
The FI-30 speed log may be used stand alone where the log transducer is
connected direct to the Speed Instrument or in a Nexus Network where the log
transducer is connected to the Server and the Speed instrument work as a
repeater.
The Speed instrument will automatically sense if it is stand alone or in a
Nexus Network.
The Server is the ”heart” of your Nexus Network, to which transducers for speed,
depth, heading, wind and navigation (GPS, Loran or Decca) are connected.
From the Server the single Nexus Network cable transmits power and data to the
instruments, which repeat the information sent from the Server, or other FI-30
transducers.
The Nexus Network is designed with the industry standard RS 485 databus, which
allows you to connect up to 32 FI-30 instrument units on the single Nexus Network
cable, thereby allowing you the flexibility to easily develop your system. The Nexus
Network is capable of carrying data 10 times faster than NMEA 0183.
The connection system, with a single 5 mm (1/5") cable and 4-pole jack plugs with
cable protectors, makes the installation easy. No need to drill big holes and the
cable can be cut to exact lengths. The connections at the Server are colour coded
and marked with a number for easy reference.
The instruments large display gives you very good viewing possibilities from any
angle, even in bright sunlight. The display and the five push-buttons have red back
lighting which you can set to three different lighting levels.
To get the most out of your new FI-30 product, please read through this manual
carefully before you start your installation.
Again, thank you for choosing FI-30. If you see us at a show, stop by and say
hello.
Good luck and happy boating!

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2Installation
•The installation includes 6 major steps:
1. Read the operation manual.
2. Plan where to install the transducers and instruments.
3. Run the cables.
4. Install the transducers and instruments.
5. Take a break and admire your installation.
6. Learn the functions and calibrate your system.
Before you begin drilling ... think about how you can make the installation as neat
and simple as your boat will allow. Plan where to position the transducers, Server
and instruments. Think about leaving space for additional instruments in the future.
•A few ”do nots” you should consider:
−Do not cut the cables too short. Allow extra cable length at the Server so
it can be disconnected for inspection without having to disconnect all
attached cables.
−Do not place sealant behind the display. The instrument gasket eliminates
the need for sealant.
−Do not run cables in the bilge, where water can appear.
−Do not run cables close to fluorescent light sources, engine or radio
transmitting equipment to avoid electrical disturbances.
−Do not rush, take your time. A neat installation is easy to do.
•The following material is needed:
Wire cutters and strippers.
Hole saw for the instrument clearance hole 63 mm (2½").
Hole saw for the Through hull fitting hole 43 mm (1 11/16").
5 mm (1/4") drill for the mounting holes.
Plastic cable ties
If you are doubtful about the installation, obtain the services of an experienced
technician.

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3Installing the instrument
•Place the adhesive drill template on the desired location for the instrument. Drill
the 2 holes using a 5 mm (1/4") drill for the two pin bolts. Use a 63 mm (2½") hole
saw to machine the clearance hole for the instrument connection socket. Remove
the template.
•Screw the two pinbolts to the instrument
•Put the instrument in place
•Screw the two nuts from the back
Note! The two nuts must just be tighten by hand

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3.1 Mount the transducer
3.1.1 Correct location of paddlewheel transducer
Generally the transducer should be placed as
far forward as possible along the waterline
length and close to the centreline.
It is important that the transducer is
always in the water, within the whole
speed range of the boat. Please note that
the actual waterline length of fast power boats
shortens considerably at high speeds.
Therefore the transducer should be placed at
25-35% along the true waterline from the bow,
when at full speed
Example:
Sailboats with a fin keel must have the transducer located at least 25 cm but not more
than 75 cm in front of the keel. It should be placed no more than 10 cm off the
centreline.
On sailboats with a pronounced “V” in the hull, such as full-keel yachts, it might be
favourable to angle the transducer slightly so that it aims at the bow, rather than
directly parallel to the centreline.
This will help balanced the passing water flow measurement from one tack to another.
Avoid placing the transducer near the edge
of sharp hull chines. Transverse water flow
in these areas can affect the accuracy of
measurements.
If you have a questions about the
location of the through-hull, contact your
builder, yacht dealer, or other owners of similar boats for advice. Always
remember to allow for accessibility from the inside of the yacht when
determining the final location.

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3.1.2 Installing the through hull fitting
1. Use a 43 mm (1 11/16”) hole cutter to cut through the hull. (See above for correct
location).
2. Slide both rubber O-rings on the dummy plug.
3. Generously apply the silicone grease to the exterior of the dummy plug.
4. Install the dummy plug in the through-hull fitting. Use a slow twisting motion and be
sure that is properly seated into the fitting.
5. With the dummy plug properly installed in the through –hull fitting, mount the fitting
so that the handle is exactly at right angles (90°) to the boats centreline. (For
pronounced V-hulls see section 3.1).
6. Apply the polyurethane sealing compound on the outer flange of the through-hull
fitting and tighten the nut on the inside by hand.
7. When this outer sealant has cured, remove the nut and apply sealant on the inside.
Tighten the nut again by hand.
8. Install the wire locking device onto the dummy plug /paddlewheel transducer.
3.1.3

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Run and install the cables
•Run the Transducer cable from the transducer
or from the Server to the instrument.
•If you want to cut the Nexus Network cable to
length, disconnect 4-pole jack plug and cut the
cable. Peel off about 35 mm (1,4") of the cable
insulation. Remove about 6 mm (1/4") from the
3 isolated wires (the 4th wire is an earth /
screen). Attach the 4 cable protectors to the
wires using a pair of flat pliers.
•Connect the 4 cable protectors to the 4-pole
jack plug as shown. Apply silicon paste on all
locations as shown.
Note: Must be done to avoid corrosion.
•Apply silicon paste to the instrument connection pins at the back of the instrument.
Press the jack plug onto the instrument pins. Press the cable in to the cable leads.
•Mount the connection back cover with the screw.
Silicon paste

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3.1.4 Installing instrument to the Server
ll FI-30 instruments are connected directly to the Nexus Network in a daisy chain. They
all use the same colour coded 4-pole jack plugs.
3.1.5 Installing the transducer direct to the instrument.
If you use the FI-30 speed as a stand alone unit (not in a Nexus Network), the
transducer and the power supply are connected direct to the instrument.
1. Disconnect the connector on the transducer cable (only used when connecting to
Server).
2. Connect the transducer to the instrument as below.
3. Connect power to the instrument, always remember to use a 3 Amp fuse between
the battery and the instrument.
4. Note that there are no power on/off switch on the instrument. In order to switch of
the instrument, a external switch has to be added on the red +12V cable.
Red
Black
Screen
White
Yellow
Green
3A Fuse

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3.1.6 Installing transducer to the Server
The log transducer are supplied with a connector for quick connection to the server.
Green
Yellow
White
Screen

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4First start
4.1 Initialising the instrument
Only in a Nexus Network
At power on, the instrument will perform a self test. The display will
first show all segments, then the software version number and the
Nexus Network ID number.
At first power on after installation, you will be asked to press SET
(PrESkey). This will give the instrument a logical ID number on the
Nexus Network.
To initialise the instrument, press SET on all installed digital
instruments, one at the time.
Note: Always wait for the text ”Init OK”
to be displayed, before you press SET
on the next instrument!
The Server automatically gives the first unit ID number 16, then 17
and so on. The order in which you press SET is the same order as
the instruments will be given a logical ID number on the Nexus
Network.
The example shows that the instrument version number is 2.0 and
the given logical ID number is 16. On the lower line, the bus master
version number (4.8) and ID (0) is displayed.
4.2 Re-initialising the instrument
If two instruments by mistake have the same ID number, this can
cause disturbance and block the information on the data bus.
To re-initialise the instrument, press CLEAR during the power up
sequence when version and ID numbers are displayed.
The display self test is then re-started on all instruments and you
will be asked to press KEY on each instrument as explained above.
Note! If you do not succeed to re-initialise, we suggest
you disconnect all but one instrument with the same ID
number, then repeat the above procedure.

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5Operation
5.1 About this manual
•In this manual each time a push-button is refereed to, the push-button name will
appear in bold and CAPITAL letters example PAGE.
•Unless otherwise stated the push-button presses are momentary.
•Each time a function is mentioned in the text, it will be in brackets and in the same
format, where possible, as displayed, ex. (TRP).

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5.2 How to use the push-buttons
5.2.1 PAGE
The PAGE button is used to move the cursor when in edit mode.
A press on PAGE moves the cursor in a circular pattern, one step to the
right for every press.
A press on PAGE and MINUS together, back steps cursor to the preceding
step.
5.2.2 MINUS
A press on MINUS moves to the next sub-function.
In edit mode it decreases to the previous digit.
5.2.3 PLUS
A press on PLUS moves to the previous sub-function.
In edit mode it increases to the next digit.
5.2.4 SET
A press on SET unlocks a digit to access edit mode.
When unlocked, the digits are ”active” (flashes) and can be edited by
pressing MINUS, PLUS and PAGE as required.
When finished editing, lock the digit by another press on SET.
DAMPENING
SIGN
SUB
FUNCTION
MAIN
FUNCTION
CLEAR MINUS PLUS SET
PAGE

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5.2.5 Clear / cancel / reset
A press on CLEAR, clear digits, cancel alarms or resets the counters.
5.2.6 Calibration
To access calibration mode, press and hold SET more than 2 seconds.
To return to main-function mode, press SET when the text return (RET) is
shown.
5.2.7 Lighting
The instrument uses red back lighting for the display and the 5 push-
buttons. The lighting can be set at 4 different levels.
To quick access the light control, press and hold PAGE for more than
2 seconds. The flashing text (Lit OFF) will be displayed and the display will be lit
momentarily.
To select between the 4 light levels, Press PLUS: LOW, MED, MAX and OFF. To lock
the selected level press SET.
The selected light level will be copied to all FI-30 instruments connected to the system.
When the lighting is on, it is not possible to reduce or turn off the lighting on an
individual instrument.
2 sec
2 sec

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6SPEED functions
6.1 SPEED main-function
Boat speed through the water.
Unit available in knots (KT), km/h (Kh) or miles/h (Mh) (See
7.1.2,C11).
6.2 SPEED sub-functions
6.2.1 TRIP LOG (TRP)
0-199.99 NM, only displayed in NM. Distance covered from
power on.
To reset TRIP LOG press CLEAR.
6.2.2 TOTAL LOG (LOG)
0-19999 NM, only displayed in NM. Can not be reset.
6.2.3 MAXIMUM SPEED (MAX)
Maximum speed since power on, or from reset of timer. To reset,
press CLEAR.
6.2.4 START TIMER (STA)
Count down timer from 59 to 1 minutes.
To start the timer from minus 10 minutes (-10’STA) press SET.
The figure 1 in 10 is flashing. If you want to start count down from 10 minutes, press
SET.
If you want to start the timer from any other time (59 to 1 minute) for example minus 5
minutes (-5’STA), press PAGE, MINUS and PLUS as required to set 5 minutes and
start the timer with SET.
When started, displays the count down time in minutes and seconds.
During the last 10 seconds the alarm will sound once every second.
6.2.5 TIMER
Elapsed time in hr/min/sec from power on, or from end of start
timer count down. To reset, press CLEAR.
6.2.6 AVERAGE SPEED (AVS)
Average speed from power on, or from reset of timer. To reset
press CLEAR.
6.2.7 DISTANCE (DST)
Covered distance from power on, or from reset of timer. This
distance are reseted when the start timer reach zero.