Raytheon AUTOHELM ST 30 SPEED Instruction Manual

TOP EDGE BLEED
MASK FOR
2 COLOUR
SEATALK
LOGO
SPEED
Operation and
Installation
ST 30

TOP EDGE BLEED
MASK FOR
2 COLOUR
SEATALK
LOGO
Nautech Limited, Anchorage Park, Portsmouth
P03 5TD, England
Telephone [phone]. Fax [phone]

ST30 Speed Operation and Installation Handbook
Knots
DISPLAY
TM
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
D582
AutohelmandSeaTalkareregisteredTradeMarksofNautechLimited
Autohelmspolicy of continuous improvementand updating may changeproduct specifications
withoutpriornotice
CopyrightNautech1992

ST30 Speed Operation and Installation Handbook
Package Contents
ThefollowingitemsareincludedintheST30Speedpackage:
1. ST30Speedinstrument
2. Fixingstuds (2 off)
3. Thumb nuts (2 off)
4. Fittingtemplate
5. 1mpowercable
6. Paddletransducer (through hull) with 10m cableand1/8inspade
connectors(0to32knots)
7. Instrumentcover
8. Operation and installation handbook
9. Highspeedpaddlewheel(2to45knots)
10. Daisy-chain cable
DISPLAY
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
ST30 INSTRUMENT
MOUNTING TEMPLATE
2-HOLES
DRILL 5mm
( .197in ) DIA
1-HOLE
DRILL 60.3mm
( 2,3/8in ) DIA
D581
BBB
ST30
SPEED
Operation and
Installation
SeaTalkSeaTalk
SeaTalkSeaTalk
1
4
5
8
9
10
7
6
SeaTalk
SeaTalkSeaTalk
23

3
ST30 Speed Operation and Installation Handbook
Contents
Introduction .......................................................................4
Chapter 1: Control Head Installation ...................................5
1.1 Siting ............................................................................. 5
1.2 Mounting procedure ........................................................ 6
1.3 Power supply (Stand-alone operation) ............................... 7
1.4 Power supply (SeaTalk operation)..................................... 7
1.5 Connection to adjacent ST30 instruments......................... 8
Chapter 2: Transducer Installation......................................9
2.1 Connection to instrument................................................. 9
2.2 Transducer type ........................................................... 10
2.3 Paddlewheel replacement .............................................. 10
2.4 Installation.................................................................... 12
Speed transducer (through hull) ...................................... 12
2.5 Cabling ........................................................................ 13
Chapter 3: Fault Finding...................................................14
Chapter 4: Maintenance...................................................15
4.1 Instrument.................................................................... 15
4.2 Transducer................................................................... 15
4.3 Cabling ........................................................................ 15
4.4 Advice.......................................................................... 15
Chapter 5: Operation .......................................................16
5.1 Display Key .................................................................. 16
Trip Distance display ..................................................... 17
Total Distance display.................................................... 17
Maximum Speed display ................................................ 18
Average Speed display .................................................. 18
5.2 Light Key...................................................................... 19
Chapter 6: Calibration .....................................................20
6.1 Normal Calibration ........................................................ 20
Speed units selection (knots/mph) .................................. 20
Logs units selection (nm/miles) ...................................... 21
Exit calibration .............................................................. 22
Log calibration .............................................................. 22
Enter calibration factor (CF)............................................ 23
Exit calibration .............................................................. 24
6.2 Calibration Lock/Unlock ................................................ 24
Return to normal display ................................................ 25
6.3 Master/Repeater display ............................................... 26
Return to normal display ................................................ 27
Chapter 7: General Specification......................................28

4 ST30 Speed Operation and Installation Handbook
Introduction
Designedforaboveorbelowdeckinstallation,theST30Speedcanbe
usedasastand-alonemaster instrument or can be set to repeat speed
information from the SeaTalk bus.
TheST30Speedwilldisplay the following information:
• Boatspeed
• Log
• Trip
• Maximumspeed
• Averagespeed
• Illuminationlevel
Knots
DISPLAY
TM
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
D582

Chapter 1: Control Head Installation
5
Chapter 1: Control Head Installation
DISPLAY
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
110mm (4.33in) 42mm
(1.65in)
24mm (1.0in)
56mm (2.20in)
88mm (3.46in)
D583
Autohelm
1.1 Siting
TheST30Speedmaybeinstalledaboveorbelow deck where it is:
• easilyreadablebythehelmsman(normallyviewedateyelevel)
• protectedfromphysicaldamage
• atleast230mm (9in) from a compass
• atleast500mm(20in)fromradioreceivingequipment
• accessiblefrombehind for ease of installation andcablerunning
Note: Topreventthebuild-upofmoisturetheinstrumentbreathesthrough
thebackcover.Forthisreasontheinstrumentmustbemountedwhere
thebackcoveris protected from direct water.
Therearcaseisfittedwithafoamgaskettoformawater-tightseal
betweenthe instrument and theinstallationface.

6 ST30 Speed Operation and Installation Handbook
1.2 Mounting procedure
D584
356241
1Instrument 2Fixing studs 3Thumbnuts 4Sealing gasket
5Power supply cable 6Transducer cable
1. Makesurethesurfaceto which the instrument (1) is to be mounted is
smooth and flat.
2. Usethetemplate(supplied)tomarkthecentresforthe two fixing
holesand the instrument connector boss.
Note: Toallowprotectivecoverstobefitted,adjacent instruments
shouldbesitednot less than 6mm (0.24in) from each other(116mm
centretocentremin.).
3. Drilltwo5mm(0.2in)diameter holes for the fixing studs (2).
4. Usinga60mm(23/8in)diametercutter,drillalocationholeforthe
instrumentconnectorboss.
5. Connectthe power supply and transducer cablestotheback of the
instrument(1)(seerelevantinstallation sections).
6. Screwthetwofixing studs (2) into the back of theinstrument(1).
7. Installtheinstrument(1)in the chosen location and secure with the
thumb nuts (3) provided.

Chapter 1: Control Head Installation
7
1.3 Power supply (Stand-alone operation)
Caution:The ST30 Speed must only be connected to a 12V supply.
–
+
+
+
+
+
SEATALK
S
P
E
E
D
D585
12V Supply Red
Screen
5A
Forstand-aloneoperation,usethe1metrecablesuppliedwiththe
instrument.
1. Connectthemouldedpowersupply plug to either SeaTalk connection
ontherearofthe instrument and run the free end back to the
vesselÕsdistributionpanel.
2. Cutthepowercabletolengthandconnectthe red wire to the positive
12Vterminalandthescreen to 0V. Protect with a 5A circuit breaker
orfuse.
1.4 Power supply (SeaTalk operation)
IftheST30SpeedistobeconnectedtoanexistingSeaTalksystemusea
StandardSeaTalkExtension or Interface cable.
Autohelm Autohelm Autohelm
Power
Extension Cable
D628

8 ST30 Speed Operation and Installation Handbook
1.5 Connection to adjacent ST30 instruments
TheST30Speed is supplied with a daisy-chaincablethatallowsadjacent
ST30instrumentstobelinkedtogether.Thedaisy-chaincablesupplies
powerto adjacent instruments andallowsdata to be transmitted and
receivedviatheSeaTalkbus.
Thedaisy-chain cable plugs into one oftheSeaTalkports on the back
cover.

Chapter 2: Transducer Installation
9
Chapter2:TransducerInstallation
2.1 Connection to instrument
The transducer is supplied with 10m (32.5ft) of cable that plugs directly
into the back of the instrument.
+
+
+
+
SEATALK
S
P
E
E
D
D586

10 ST30 Speed Operation and Installation Handbook
2.2 Transducer type
The ST30 Speed system is supplied, as standard, with a plastic through
hull transducer. This is suitable for use with Glass Reinforced Plastic
(GRP), Steel and Aluminium hulls at speeds up to 32 knots.
Wooden hull and transom mount installations require a different type of
transducer. Please refer to the following table for details.
Caution: Plastic through hull transducers must not be used on vessel's
with wooden hulls.
Note: The ST30 speed transducers are fitted with standard paddlewheels
designed for speed up to 32 knots. For vessel's that will exceed this
speed, please refer to section 2.3 which contains instructions on how to
fit the high speed paddlewheel (supplied).
2.3 Paddlewheel replacement
If the high speed paddlewheel (supplied) is to be fitted, or the existing
paddlewheel to be replaced, proceed as follows:
1. Remove the retaining rings (1) and pin (6) from the speed
transducer (3).
2. Withdraw the speed transducer (3) from the through hull fitting (4).
3. If replacing a worn paddlewheel and if the vessel is still in the water,
replace the speed transducer (3) with the plug (5).
4. Remove the pin (6) that retains the paddlewheel (7) in the speed
transducer (3). This is a simple press fit into the transducer housing.
Hull material or
location Boat speed (max) Transducer type
GRP, Steel,
Aluminium 32kts Standard through hull
GRP, Steel,
Aluminium 45kts Standard with high speed
paddle
Wood 45kts Bronze (Z116)
Transom 60kts Transom mount
with bracket
(Z119)

Chapter 2: Transducer Installation
11
5. Fit the high speed/replacement paddlewheel (7) to the speed
transducer (3) and retain with the pin (6).
Note: The paddlewheel is correctly orientated when the working
surfaces of each paddle are facing forwards.
6. Assemble the speed transducer (3) to the through hull fitting (4) and
secure with retaining rings (1) and pin (2).
3
D587a
5
6
7
8
4
2
1

12 ST30 Speed Operation and Installation Handbook
2.4 Installation
All speed transducers are supplied with detailed installation and mainte-
nance instructions. These instructions, together with the following notes,
should be read thoroughly before attempting to install the transducer.
Speed transducer (through hull)
For accurate speed readings, locate the speed transducer in the shaded
'clearflow' areas as shown.
D587
The transducer should also be:
• ahead of propellers (10% W.L. length minimum)
• at least 150mm (6in) from the keel (with sailing yachts siting should be
forward of the keel).
• near the centreline of the vessel
• clear of other through hull fittings or projections
• have sufficient clearance inside the hull to allow the nut to be fitted
• have 100mm (4in) clearance above the through hull fitting for with-
drawal

Chapter 2: Transducer Installation
13
2.5 Cabling
Run the transducer cable back to the instrument. Avoid fluorescent lights,
engines and radio transmitting equipment. The transducer cable should
also be kept clear of bilge's, where possible, and be secured at regular
intervals.
Note: The transducer cable can, if required, be shortened. However, new
1/8in spade connectors must be crimped to the shortened cable.
If the bronze through hull (Z116) or the transom mount (Z119) transduc-
ers are to be used, the following modification must be carried out on the
transducer lead.
1. Using a pair of wire cutters, remove the moulded plug from the end
of cable.
2. Strip the outer cable back 38mm (1.5in).
3. Using a pair of cable strippers, remove 10mm (3/8in) of insulation
from each wire.
4. Using a suitable crimping tool, attach a 1/8in spade connector
(supplied) to each of the wires.
5. Connect the wires to the instrument in accordance with the following
table.
Transducer type Colour coding (cable to
unit)
Bronze through hull
(Z116) Brown and white Ð cut back Green Ð green terminal
Screen Ð white terminal
Red Ð red terminal
Transom mount (Z119) As above

14 ST30 Speed Operation and Installation Handbook
Chapter 3: Fault Finding
All Autohelm products are, prior to packing and shipping, subject to
comprehensive test and quality assurance programmes. However, if a
fault arises with the ST30 Speed, the following table will help to identify
the probable cause and provide the most likely cure.
Fault Cause Action
Instrument display
blank No supply to instrument Check supply
Check cabling and
security of connectors
Check circuit breaker
Return ST30 Speed for
repair
No speed information Transducer cabling
problem or fouled Clean paddlewheel
No exchange of
information between
SeaTalk instruments
SeaTalk cabling or
connector problem Check security of SeaTalk connectors
Remove instruments one
by one to isolate
faulty unit
Failure of a group of
instruments in a chain Cabling or connector problem Check the security of the connectors between
functioning and
non-functioning
instruments
Unable to enter
calibration Calibration locked Refer to Calibration lock/unlock section

Chapter 4: Maintenance
15
Chapter 4: Maintenance
4.1 Instrument
Certainconditions may cause condensationtoappear on the instrument
window.Thiswill not harm the instrument andcanbeclearedby increasing
theilluminationsetting to level 3.
Chemical andabrasive materials must notbeusedtocleantheST30
Speedinstrument; if the instrument isdirty,clean with a soft, dampcloth.
4.2 Transducer
Referto the Installation and Maintenance instructionssuppliedwiththe
transducer.
4.3 Cabling
Examineallcablesforchafing or damage to the outer shield and, where
necessary,replace andre-secure.
4.4 Advice
Foradvice,orfurtherinformationregardinginstallationofthisproduct,
pleasecontacttheAutohelmProductSupportDepartmentoryourown
National Distributor.

16 ST30 Speed Operation and Installation Handbook
Chapter 5: Operation
TheST30Speed leaves the factory setto:
• displayspeed in knots
• displaydistance in nm
• Mastermode
Thesesettingscanbechanged in calibration.
WhentheST30Speedispoweredontheinstrumentdisplays'Boat
Speed'.
Knots
DISPLAY
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
D605
5.1 Display Key
Eachpress ofDisplay cycles the followingmenu:
• Trip distance
• Total distance
• Maximumspeed
• Averagespeed
Afurtherpresswillreturnthedisplaytothe current boat speed.
The maximum speed and average speed displays will automati-
cally return to current 'Boat Speed' after 8 seconds.

Chapter 5: Operation
17
TripDistancedisplay
1. Press Display toselect'TripDistance'.
Nm
Cal.
DISPLAY
TM
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
D600
2. ToresetTripDistancetozero,pressandhold for3seconds.The
tripdisplaywillflashonandoffbeforeresettingto zero.
Nm
DISPLAY
TM
SPEED
D601
TRIP
TOTAL
MAXIMUM
AVERAGE
TotalDistancedisplay
PressDisplay to select 'Total Distance'. The Total Distance displayshows
thetotaldistancecoveredin nm or miles.
Nm
TRIP
TOTAL
MAXIMUM
AVERAGE
D602
Nm
TRIP
TOTAL
MAXIMUM
AVERAGE
D602A
Note: Ifthisdistanceexceeds1000nm/miles,itwillbe displayed in
thousands,hundreds and tens (e.g.,1th, 510).

18 ST30 Speed Operation and Installation Handbook
MaximumSpeeddisplay
1. PressDisplay toselect 'Maximum Speed'. This display shows the
maximumspeed achieved in knotsor mph.
Knots
DISPLAY
TM
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
D603
2. Themaximumspeeddisplayisresetbypressing foronesecond.
Knots
DISPLAY
TM
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
D604
AverageSpeeddisplay
1. Press Display toselect'AverageSpeed'.Thisdisplayshows the
averagespeedinknotsormph.
Knots
DISPLAY
TM
SPEED
TRIP
TOTAL
MAXIMUM
AVERAGE
D605