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SIGNETMarineThe Meesure of Excellence

SL 254Instruction Manual

A Divison ofRING-O-STEEL, INC.

505 Van Ness Ave.Torrance, CA 90501

(310) 320-4349

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TABLE OF CONTENTS1. INTRODUCTION

1.1 Description1.2 SpecificationsINSTALLATION2.1 UDl?acking and Inspection2.2 indicator Installation2.2.1 Installation Equipment2.2.2 Installation Procedures2.3 Masthead Sensor Installation2.3.1 Installation Equipment

2.3.2 Installation Before Stepping2.3.3 Installation After Stepping and Rigging2.4 Power Source Hook-Up2.5 Repeater (Slave Installations

THEORY OF OPERATION3.1 Wind Point and Wind Speed3.2 Masthead Sensor3.3 Calibration and Rear Panel Controls

3.3.1 Wind Point Calibration3.3.2 Wind Speed Calibration3.3.3 Master/Slave Switch

TROUBLESHOOTING4.1 Troubleshooting the Indicator and Sensor4.2 Special Troubleshooting Tips

APPENDICES5.1 Parts List5.2 Manual Change Information5.3 Revision Status5.4 Indicator Schematic

WARRANTY

I125556610101011151719192020202125272727292929293033

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INTRODUCTION

This manual contains description, specifications, and instructionsfor the installation and operation of your SL254 Wind Machine.PLEASE READ ALL OF THIS INSTRUCTION MANUALBEFORE ATTEMPTING INSTALLATlON ANDOPERATION. If you require further assistance, contact yourauthorized SIGNETMARINE dealer, the nearest authorizedSIGNET MARINE service center (addresses furnished uponrequest), or contact SIGNETMARINE direct.

The SL254 features advanced microprocessor-basedtechnology resulting in low power drain, plusimproved accuracy and reliability for the mostdemanding marine applications, whether racing or .cruising. The SL254 is shipped standard with aSL254lndicator.Masthead Sensor (windspeed/angle), standard SO-foot cable (optional cablelengths are available) and hardware.The Indicator displays both wind speed and windpoint. Digital wind speed is displayed from 0-99knots in I knot increments on the 2-digit LiquidCrystal Display (LCD). The analog dial tracksapparent wind angle a full 360 degrees relative toyour boat's direction (0 to 180 degrees Port andStarboard). This low power display has highvisibility even in direct sunlight. Separately powerednight l ights (12 volts DC) provide dusk to dawnillumination. The Indicator contains reverse polarityprotection.The Indicator can be installed on a bulkhead,instrument panel or instrument pod. The 00 iscompletely sealed to withstand weather, washdownand saltwater corrosion. In addition, a plastic coveris provided to help protect the Indicator's face whennot in use. To nummize reflective glare, the bezel ismatte black..,

1.1 DESCRIPTION

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INTRODUCTION - 1.1 DESCRIPTIONTbe tei-cup portion of the Masthead Sensor generatesits own signal and fOlates on low-friction, stainlesssteel bearings. Th e wind vane portion of this sensorsends relative voltages to the SL254 Indicator (theIndicator sends a reference voltage to the directionsensor). Th e wind vane is aerodynamically designedfor light weight counter-balancing and ishydraulically damped for accurate readings under allwind conditions.TH E SL254 has been designed using the latestdevelopments in technology. Each unit has beentested and passed extensive quality conlrol standardsprior to packaging and shipment. Included with yourSL254 system is an instruction manual whichincludes an operation section containing detailedexplanations of the operation of each feature. Themanual serves as a quick reference of operation andtherefore should be kept near your SL254.Due 10 all the complexities encountered when puttingtogether a large system, it is recommended youcontact Signet Marine dealer when a system of moreIhan three Signet Marine instruments will be usedpe r knotmeter, wind speed, or wind point function.

1.2 SPECIFICATIONSWIND POINT:

INTRODUCTION - 1.2 SPECIFICATIONWIND SPEED:

DISPLAY 2.

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o INSTALLATION INSTALLATION - 2.2 INDICATOR INSTALLATIONNOTE: The SUS4lndlcator generates a varying magnetic field which mayinterfere with a magnetic compass, irthe Indicator is to be mounted within 3'of a m a ~ e t i c compass, a magnetic shield must be attached to the Indicator(magnetic shield is Signet Marine PINM01SS2).2.1 UNPACKING AND INSPECTION

When unpacking your SL254 package, be sure youhave received everything. Carefully check each itemfor damage incurred during shipment. I f damage hasoccurred, promptly notify your dealer and theshipping carrier.The following items are included in your SL254package:1. Indicator Assembly, SL254 (M25440)2. Protective Plastic Cover forIndicator (M0212-ot)3. Mounting Kit (M0201-Ql)4. Masthead Sensor Assembly(Includes Mounting Bracket) (M2430-4)5. SO-foot Mast Cable Assembly(1-1300.260-{)6. Instruction Manual and WarrantyCard. SL2S4 (M2S490)When the SL254 is ordered separately as a M25440.your package includes items #1,2,3, and 6.

NOTE: Please fill oul aDd rttUI'1I tbe Warnnty Card all 10011 as possible.

2.2 INDICATOR INSTALLATIONThe Indicator may be installed in a bulkhead orinstrument panel having a 4 . 6 ~ diameter round cutoutwith sufficient clearance around it to accommodatethe Indicator's 5 . 5 ~ round front bezel. There mustbe a minimum 3 . 5 ~ rear clearance.

5

2.2.1 INSTALLATION EQUIPMENT1. 112" drill motor2. Saber saw or 4 l l 2 ~ hole saw (4.6"hole required)3. Flat-blade screwdriver4. Bedding compound or silicone sealant

CAUTION: DO NOT USE POLYSULPffiDE BEDDING COMPOUNDS ONINDICATOR. USE SILICONE, NON-HARDENING BEDDINGCOMPOUNDS. SUCH AS GE SILICONE SEAL.

2.2.2 INSTALLATION PROCEDURES1. Choose location: make sure it has suitableclearances.2. Cut a 4 . 6 ~ diameter hole.3. Instaillhe Indicator with bedding compound orsealant around the rear of the flange.4. Loosen the ring clamp. Install on the case fromthe rear, as shown in Figure 1. With the Indicatorflange against the bulkhead, position the clampagainst the fear of the bulkhead, and tightensecurely. Tum the three bracket screws clockwiseuntil the Indicator flange is seated snualy a ~ a i n s tthe bulkhead (See Figure 2). Do not overtlghten;this may cause the clamp to slip.5. Wipe away any excess bedding compound aroundthe Indicator bezel on the front of the bulkhead.

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INSTALLATION - 2.2 INDICATOR INSTALLATION INSTALLATION - 2.2 INDICATOR INSTALLATION6. Connect the Masthead Sensor 8-Pin MaleConnector to the 8 Position Female Connectorhangin& from the Indicator.7. Connect Instrument and lighting power to theSL254 Indicator per "Power Source Hook-Up"Instructions.

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8

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INSTALLATION - 2.2 INDICATOR INSTALLATION INSTALLATION 2.3 MASTHEAD SENSOR INSTALLATION

F 1 1 l 1 ~ 2. o.a.llecl prom. gf MK 1 IndlcltClf \leftl .n d damp "" 9 (""hI).

-::::'! I---- -"5"..25" r---- '

I I575"J

9

2.3 MASTHEAD SENSOR INSTALLATIONReference Figure 3 throughout this section. Themast cable can eOimect the sensor to the Indicator ineither of two ways: (1) directly between the sensorand Indicator without splices, or (2) indirectlythrough the optional 1-3000.100 Mast-Base JunctionBox. The 1-3000.100, and any olher options, andany INSTALLATION hardware may be purchasedfrom your Signet Marine dealer (see sectIOn 5.1Parts List).The Masthead sensor should be installed in twosteps: (I ) before the mast is s t e p p ~ , and (2) afterthe mast is s tepped and rigged. It is notrecommended that the staff, vane, and lei-cup sensorbe mounted before stepping in order to avoid damageto these components .

2.3.1 INSTALLATION EQUIPMENTI. #7 drill2. 114-20 tap3. S/64-inch Allen wrench4. Silicone sealant5.2 grommets (see 2.3.2)6. 1 cable strain-relief clamp or strap(see 2.3.2)7. wire cutter8.Box wrencb set9. Phillips-head and flat-bladescrewdrivers

2.3.2 INSTALLATION BEFORE STEPPING1. Select a location on top of the mast that willpermit the sensor's staff to point aft (if the sensor

IS pointed fore itmay not be visible from the helmand is more subject to sail damage).

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VNE ASSBtI.,

o

, 10-32 IlOCHIIIIG. . . " Ql

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HOlt. " I'OLII IHSTAU..nJCW oowm 'tOU TO ICllMr 'DE SUI$CIfI" TIIMIH. M DUST ~ I O J ) !tClLUl I f AllUT!D 1'0', SUCH 1'IMT . lJI M QU5T 9l1EI.DIS ALI.e WITH M ALICHDT IWIl' cw M lI'l'Vt ICD't' ollw:rTu AM' TIE S f " ,vNe HU.D If OfIJDl'TED ALIM M !Tm AS 9lOII1'D.

12

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INSTALLATION - 2.3 MASTHEAD SENSOR INSTALLATION

Storage or shipment of the masthead sensor on itsside or upside down may allow oil seepage from thevane's hydraulic damping assembly. This oilseepage IS normal and will not affect operation of thesensor if i t is cleaned off just prior to mounting. Payspecial attention to cleaning the area between thestaff and dust shield.

4. Dril l two 1- diameter holes in the mast , one nearthe top and the other recommended near the mastbase, to accommodate the mast cable. Insertgrommets which can accommodate a 3/B-inchdiameter cable and is compatible with the mastwall thickness.5. Route the mast cable down the inside of the mastthrough the grommeted holes with the socket end(female) at the top of the mast and the plug end(male) at the base of the mast. (On a mast with

internal halyards, protect the mast cable by usingPVC (polyvinyl-chloride) tube which is securedaway from the halyards and runs the length of themast,)6. Mount a cable strain-relief clamp or strap to themast immediately above the cable entrance holenear the masthead. This clamp is to secure themast cable and eliminate strain on the upperconnector.

"

2. Using the mounting base (M2039) as a template,with the taller end of the base aft , dri ll two #7(.201-) holes in the mast. Tap the holes with a1/4-20 lap.3. Mount the sensor base with the tal ler end aft andsecure loosely to the top of the mast with the boltsand lock-washers provided.

2.3.3 INSTALLATION AFTER STEPPING ANDRIGGING

INSTALLATION - 2.3 MASTHEAD SENSOR INSTALLATION

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INSTALLATION - 2.3 MASTHEAD SENSOR INSTALLATION

I. Before going up the mast and installing the sensor,the wind vane's dust shield must be aligned:A. Turn the dust shield (see Figure 4A) untilthe FWD 0 degrees notch matches thewhite alignment mark on the sensor'supper body.B. Hold the dust shield in place. Then, if thestaff will be installed pointing aft asrecommended, mount the vane on top ofthe dust shield pointing_ over the staff (seeFigure 48). If lIle staffwill point 10 thebOll, the vane must point to the bow.C. Remove the 10-32 lock-nut and washerfrom the bottom wind speed end of thesensor's body. Install the lri-cup by fit tingit over the remaining nut. The recessedarea of the Irkup must face upward.Replace the 10-32 lock-nut and washer and

firmly tighten.2. Take the completed masthead sensor assembly upthe mast, place the staff in the mounting base,

insen the mounting bolts , and proceed to adjustthe staff angle until the sensor's body isp e ~ n d i c u l a r to the water. Three sUtffadjustmentpoSItions are provided on the sensor's mountingbase. If more adjustment is requi red, use a shimunder the mounting base.

3. With the mounting-base bolts loose, align the staffwith the backsUty so the sensor assembly isparallel with the foreaft axis. Firmly tighten allmounting-base bolts.

4. Connect the masthead sensor cable connector tothe mast cable connector. Dress the cable andtighten the cable strain-relief clamp or strap.5. Seal all holes, including the grommeted cablehole, with silicone sealant.6. At the mas t base, gently pul l any loose cablethrougb the &rommeted bole. Seal the hole withsil icone sealant. Connect masthead cable toinstrument or processing unit.

13

INSTALLATION - 2.3 MASTHEAD SENSOR INSTALLATION

'OIlWANl VIEW

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,.... 4 L AI.. ", . . . . . .. wItMl _ . . . . . aItloeId.

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INSTALLATION 2. 4 POWER SOURCE HOOK-UP INSTALLATION - 2.4 POWER SOURCE HOOKUP2.4 POWER SOURCE HOOKUP

The SL254 is powered by a standard 12 volt battery (car ormarine type). Whenever possible. avoid using the starting batteryfor the SL254 power. After installing the Masthead Sensor andthe SL254 Indicator, follow the Hook-Up procedures outlined:

2. Connect the lighting power wire (white wire) toyour instrument lighting switch panel (currentrating of 1AMPERE). The green wire connectsto the H common ground, battery negativeterminal (The lighting drains less than 150 rnA).NOTE: I f no switch panel, dimmer control, or fuse box is available, the redand white wires may be connected directly (through a 1 Al\lPERE fuse) to the"+" terminal of the battery and the black and green wires connected directlyto the "." terminal of the battery. I f no lights ar e requ ired, do not connedthe white and green wires.

I. Connect the instrument power wire (red wire) toyour instrument circuit breaker or fuse block witha current rating of 1 AMPERE. The black wireconnects to the H common ground, banerynegative tcrminal (The instrument drains less than250 mAl.

IUC ( l a u J I WHrl'B11Y UlJIITS UlJM'T'I

+ 12 VDC

".un

oWIl

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INSTALLATION - 2.5 REPEATER (SLAVEIINSTALLATIONS INSTALLATION - 2.5 REPEATER (SLAVE) INSTALLATIONS2.5 REPEATER (SLAVEIINSTALLATIONS

MASTHEADSENSOR

SL24wnIDPOINT(SUVE)

SL2S4MASTER

\( : 1I I

SMARTPAK.SLWSLAVE

The wind point circuit of a Signet Marine Indicator,when used as a master unit. supplies transmitterreference voltage through the mast cable to the windvane sensor circuit. If the Indicator is to be used asa repeater (slave), this reference voltage is notrequired. (See section 3.3 Calibration and RearPanel Controls for setting the Master/Slave switch.)A typical repeater (slave) installation is shown inFigure 7. (Refer to section 5.1 Parts List).

Figure 7. Typical repeater (slave) installation.

'7 '8

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3.1 WIND POINT AND WIND SPEED

THEORY OF OPERATION

The wind point section of the Indicator is a DC servo system.The wind-vane position determines the masthead sensor'spotentiometer slider position. Three taps on the potentiometerprovide three voltages with a direct relation to vane position.These three voltages are current-amplified in the Indicator andused todrive the 3-

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THEORY OF OPERATION 3.3 CALIBRATION AND REAR PANELImmediately after initial calibration, operation of theIndicator's wind point function should be verified forfuture reference. Disconnect me Indicator's cablefrom its mate. The Indicator's built-in transmitterreference signal will force a reading on lhe analogdial of between 10 degrees port and 40 degreesstarboard. Reeoed the specific reading. Thisoperational verification may be performed again atany time. The reading obtained on future checksshould match the initial reading. ReCOMect theconnector to its mate.

3.3.2 WIND SPEED CALIBRATIONTo calibrate Wind Speed, determine the actual windspeed and the wind speed indicated by theinstrument. Calibration is performed with lhedipswilches located behind the feaT panels of theIndicator. Note the current calibration settings of thedipswitches. Look up lbe current dipswitcb settingson the Table provided and find the correction percentwhich corresponds with the current settings.Once the correction percent is found on the chart,use the following equation to determine the newcorrection percent.

Where WSA ... Actual Wind Speed in KnotsWSI = Indicated Wind Speed in KnotsC ... Current Correction Percent

DDDDDDDD

-THEORY OF OPERATION 3.3 CALIBRATION AND REAR PANELNOTE: The ngure above represents how the dispswitches ar e set by thefac tory . They ar e set to all open. Dipswitch #8 is se t open by the fac tory . Itis used to indicate the sign-bit. Open (as set by the factory) equals a decreasein values. Closed equals an increase in values.

Once the equation is used to determine the newcorrection percent, use the Table again to find thenew switch settings which correspond to the newcorrection percent and set the sWitches to theseseuings.Wind speed calibration can be checked any time bycomparing the wind speed displayed on lhe Indicatorwith the reading at an accurate, stationary windmeter, such as a Coast Guard Station. For moreprecise calibration check, while motorin& on amorning with no breeze, compare the Indicator'sdisplayed wind speed with the boat's knotmeterreading.

5' 52 53 54

2 '

55 56 57 22

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THEORY OF OPERATION - 3.3 CALIBRATION AND REAR PANEL

WIND SPEED SWITCH SETID'iGSTABLE

THEORY OF OPERATION - 3.3 CALIBRATION AND REAR PANEL

WIND SPEED SWITCH SElTINGS TABLE

Switch Sewols Col'ftC:cloDSwitch Senia" CornctiOD Switch SeniDrs CoITKdOD Percent

PueeDt PelUDt 51 51 53 54 55 S6 5751 51 SJ 54 SS 56 57 51 52 53 54 55 56 57 ccccceoi 5.cceccce CCCCCO.JC 25 o jC C C C C 0 50.8o ; , l c c c c c c 'O;'1C C C C 7()jjC 15.8 C 1011c, c C C (0 n.6C 0 ~ c c c C 1. ' e ,oxe c c \ ~ 26.6 0'0 C C C C 10 52.3I O ' ~ O C C c c C 2.3 o/OMC C C (o lc 27.3 C C 10k C C 10'!l 53.1C C )o'jc c c C 3.2 C C [O'I;C C J05le 18.1 ,ork 1 0 , ~ C C C 10 53.910k 1 0 ~ c C C C 3.' O < ~ C ;ojc C {O C " .9 C 10Jlll>;llc C C I '4,7C 10'.0, 'c C C C '. 7 C ! O $ ( ) J ~ C c " C 29.7 O ) i O ~ : C C C 10' 55.5o 'O"'OI1C C C C 5.' O : ~ O ' H % O , i W C C LO C 30.5 C C C OJC C 10 56.3C C C r o , ~ c c c .3 C C c :o::Wc fQ'.lC 31.3 OIC C ,o,lc C 101 '7o Ic C 101c C C 7 Ode c ' O ~ C roAc 32 C , o "c O ~ C '0)i1 57.8C OIC 1 0 ~ c C C 7. ' C 01!C 'o'Hc :o'i!c 32.8 o 'O'lC IO,JlC C o J 58.6o O-!C O.,C C C o,.o:lc O::C O,llC 33.6 C C IOttOjc C 10 tJ 59.4C C 0 ~ 0 1 C C C .3 C C .0 . -O"'0C ' o . ~ c 34.' o Jc IQ;roic C '0 " 60.1o C 0 O ~ C C 10.1 OC 0.03COco!!C 35.2 C O'cOltOIC C O ' 60.9C 0 O'.O.C C C 10.9 C O}iO}:O./C o 'c 35.9 O ~ ' O o ,otic C O " 61.70 :0 o . , . o ~ c c C 11.7 o '0 , O"O.NC o ' ic 36.1 CCCCO'CO. 62.5C C C C oAc C 115 C C C C o_

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THEORY OF OPERATION _3.3 CALIBRATION AND REAR PANEL THEORY OF OPERATION - 3.3 CALIBRATION AND REAR PANEL-3.3.3 MASTER/SLAVE SWITCH

The switch to convert a given SL254 from a Masterto a s lave is shown in Figure 8.I t is located inside the uni t a t the top of the M25446circuit board. The rear cover must be removed (3screws) (0 get to the switch.Moving the switch to the left engages the transmitterpower supply and makes the unit a MASTER. I f thewind point transmitter power is obtained fromANOTHER unit, the switch should be moved to theright, disconnecting the transmitter power, andmaking litis unit a SLAVE.

NOTE: DON'T BE CONFUSED WITH THE OPERAnON OF THESWITCH. MOVING THE RIBBED END OF THE SWITCHTOWARDSTHE END MARKED "M". OR TO THE RIGHT DISCONNECTS THETRANSMITTER POWER AND MAKES THE UNIT A SLAYE. MOVINGTHE RIBBED END TO THE LEFT ENGAGESTHE TRANSMITTERPOWERMAKING IT A MASTER.

25

M.UTEJUSLAVE SWITCH

CIIlCUIT BOAROI

014, o,J!,

!'iG"'" . Slmpl!l&ed Y i_ of In-'de e j ~ 1 1 b.. thIMln, MASTtRISl..AVI. IWIUIl.

2.

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o TROUBLESHOOTINGThe SL254 is a complex electronic devicewhich should norrnall be serviced only by aqualified technicianWith proper equipment.The Indicator contains no user-replaceableparts. The masthead sensor assembly doescontain replaceable parts (see 5.1 Parts List).

4.1 TROUBLESHOOTING THE INDICATOR ANDSENSOR

Operational verification of the Indicator'5wind pain:function will determine if the Indicator is faulty.Disconnect the Indicator's connector from ilS male.Record the analog dial reading. It should match theinitial reading obtained in 3.3.1 Wind pointCalibration. If not, the Indicator must be serviced bSignet Marine or an authorized se['\lice facility(addresses of worldwide locations furnished uponrequest).

4.2 SPECIAL TROUBLESHOOTING TIPS

TROUBLESHOOTING - 4.2 SPECIAL TROUBLESHOOTING TIPSincorrect. the potentiometer requiresreplacement.

C. To zero the potentiometerJ measureresistance between pins 1/4 and I and turnthe wind vane until obtaining a resistancereading of 0 ohms.

2. The tri-eup transducer may be checked for output.Measure AC voltage between pins 1/6 and 7 of themasthead sensor cable connector. With the lri-cupturning, an AC voltage should be produced. Thenmeasure resistance across the same pins with theui-eup stationary. This reading. should be 4,000ohms +- 10%.NOTE: If a junction box is used, the cable between the masthead andjunction box should be checked using ste'ps 1. 2, and 3 above.

3. Next, the cable from the masthead and Indicatorshould be checked with an ohmmeter. Disconnectthe connector at the Indicator. Measure theresistance across each bare-wire t ip and itsrespective connector pin. An open wire will showup as a high resistance, greater than 15,000 ohms.None of the I?reviously mentioned wires shouldhave continUity to the cable shield.1. The wind-vane's potentiometer may be checkedfor correct electrical parameters.

A. Turn off the power to the Indicator.Disconnect me mast cable connector fron,the masthead sensor cable connector.Check the connectors for damale or 10051wires.B. Check the potentiometer of the wind vanimeasure its resistance between pins #4 a 5 of the masthead sensor connector. Thi!readinl should be approximately 1250ohms. Then check. resistance between pi:#1,2, and 3 (any combination). Thisreading should tie approximately 1110ohms. If any of these readings are

27

PIN CONFIGURATION:

Pin #1 - Red112 - White#3 - Green#4 - BlackPin #5 Orange1/6 - Blue#7 - Yellow#8 - Brown

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APPENDICES - 5.2 MANUAL CHANGE INFORMATION

APPENDICES 5.4 INDICATOR SCHEMATICUnauthorized repair of any portion of your SL254 can void yourlimited warranty.5.1 PARTS LIST

I. Masthead Sensor:Assembly & Mounting Bracket....... M 24.304Vane Assembly......................... M20,32Shield Assembly"" .."""""""" . M 20,59Potentiometer Assembly/Damping Assembly M 20.53Wind speed Transducer.............. M 19.29Tricup Assembly................... M 19.32Masthead Mounting Base. .. .. ... .. .. . M20.39

',""1 I. .____--""w!!i'H.MICII lO' I I IOCUSOII IL..........J LCD2

~ - . , ..--------1--, VOLT. +12V 1l1Ea. 2db

Moo127-3BM00201-1M00212-11-3000.100

2. Indicator:Font Case with glass .Mounting Kit. .Protective Plastic Cover for faceplate4. Miscellaneous:Mast-Base Junction Box .

5.2 MANUAL CHANGE INFORMATION . . . . . , . . . MIC 25