AUTOHELM Z219 Bedienungsanleitung

Z219 ST80 Active Wind Transducer Service Procedures

D2720-1

ST80 Active Wind Transducer

ST80ActiveWindServiceProcedures 83067-1 1

Z219

CE MARKING OF EQUIPMENT/REPLACEMENT PARTS

WARNING

If the Autohelm equipment under repair, test, calibration, installation or

setting to work carries the European CE mark, only parts and compo-

nentssuppliedorapprovedforsuchusebyAutohelmshouldbeusedin

order to maintain compliance with the relevant CE requirements.

Incorporation, use or attachment, by any means, of parts or components

not supplied for or not approved for such use by Autohelm or, if supplied

or approved for use by Autohelm, not properly fitted in accordance with

instructionspublished,providedorrecommended byAutohelm,may

cause the equipment to malfunction and, in particular, to become unsafe

or to no longer meet the relevant CE requirements. In these circum-

stances,RaytheonMarineEuropeLtdexcludesliabilitytothefullestextent

permissible in law for any loss or damage including any liability for its

contribution to such loss or damage by its negligent acts or omissions .

ST80 Active Wind Transducer

2 ST80ActiveWindServiceProcedures 83067-1

Z219

Contents 1. Description ....................................................................5

2. Operation ......................................................................5

3. Disassembly...................................................................6

4. Assembly .......................................................................7

5. Functional Test ...............................................................9

5.1 Preliminary Inspection ........................................................9

5.2 Test Equipment ..................................................................9

5.3 Functional Test Flowchart................................................. 10

6. Spares Numbers ..........................................................11

7. Circuit Description .......................................................12

7.1 Power Supplies................................................................12

7.2 External Signals ...............................................................13

SeaTalk............................................................................... 13

Anemometer....................................................................... 13

Wind Vane ...........................................................................13

Connector Signals (Main PCB) ..............................................14

SeaTalk Cable ................................................................... 14

PL1 (Wind Vane) ................................................................14

PL2 (Anemometer) ............................................................ 14

7.3 Signal Processing............................................................15

Microprocessor...................................................................15

Autohelm ASIC .................................................................... 15

8. PCB Details..................................................................17

8.1 PCB Layout ..................................................................... 17

8.2 PCB Component Lists ......................................................19

Anemometer PCB, Components......................................... 19

Vane PCB, Components.....................................................19

Main PCB, Surface Mount Components, component side ....19

Main PCB, Conventional Components, component side .......19

ST80 Active Wind Transducer

ST80ActiveWindServiceProcedures 83067-1 3

Z219

Main PCB, Surface Mount Components, underside..............19

Main PCB, Conventional Components, underside.................20

Illustrations

Figure 1 Exploded View...............................................................8

Figure 2 Test Equipment Connection............................................9

Figure 3 Block Diagram ............................................................ 16

Figure 4 Component Layout......................................................17

Figure 5 Circuit Diagram........................................................... 18

ST80 Active Wind Transducer

4 ST80ActiveWindServiceProcedures 83067-1

Z219

1. Description

This section of the Maintenance Manual covers the servicing procedures

for the ST80 Active Wind Transducer, Product Code Z219.

The transducer measures wind speed and direction using an anemometer

cupassembly and a windvane,each mounted on independentshaftsat

either end of a pod containing electronic circuitry.

Electronicsignals generatedbyan opto-electric integratedcircuitand a

mechanical interrupter coupled to a shaft on which a cup assembly ro-

tates.When the cups are drivenbythe wind the generated signalsare

convertedintodatarepresentingwindspeed.

The wind vane rotates on a shaft to which a magnet is attached. Hall effect

integrated circuits detect the position of the magnet in two orthagonal

axes, and the output signals of the circuits are converted to data repre-

senting the position of the wind vane.

Position and speed data are broadcast on the SeaTalk bus at one - second

intervals, thus becoming available to other elements of the system.

Parametersdefining upper and lower limitsofwind speed and angle, both

true and apparent, can be entered (through other elements of the system)

tocause alarmsto begenerated whena specifiedlimitisexceeded.

Alarms are also broadcast on the SeaTalk bus at intervals of one second

while the alarm condition exists.

2. Operation

Thereare nooperationalactivities requiredtoprepare theActiveWind

Transducer for servicing.

ST80 Active Wind Transducer

ST80ActiveWindServiceProcedures 83067-1 5

Z219

3. Disassembly

Referto Figure 1,ExplodedView.

When handling any of the PCBs, linen or other suitable material (

not

nylon)

gloves should be worn if an anti - static mat and grounding strap are not

used.If glovesarenotavailable, handle thePCB by theedges only.

1. Releasethe grubscrews(12) holdingthewind vane(1)and anemom-

eter cup assemblies (11). Back the screws just enough to free the

assemblies without allowing the nuts (4) to fall out. Remove the vane

andcupassemblies

2. Pulltheanemometer head (10) out of the main body (8) andunplugthe

ribbon cable (5) from PL1. To release the cable, lift the top bar of the

connectorandslipthecable free(see detailin Figure1)

3. Pullthe wind vanehead (2) outofthe main body(8) and unplugthe

ribbon cable (5) from PL1. To release the cable, lift the top bar of the

connectorandslipthecablefree(SeedetailinFigure1)

4. Slidethe PCB (7)out of themainbody through thetop (wind vaneend)

5. To release the PCB, unsolder the SeaTalk cable (6) from the contact

pads(seedetailonFigure1).

ST80 Active Wind Transducer

6 ST80ActiveWindServiceProcedures 83067-1

Z219

4. Assembly

Referto Figure 1,ExplodedView.

When handling any of the PCBs, linen or other suitable material (

not

nylon)

gloves should be worn if an anti - static mat and grounding strap are not

used.If glovesarenotavailable, handlethePCB bytheedges only.

1. SoldertheSeaTalkcable(6) tothemainPCB(7)contactpads(see

detail, Figure 1 for cable colours and connections)

2. Lift the top bars of main PCB connectors PL1 and PL2 and insert the

ribboncables(5). Press the bars down tosecurethecables (see detail

in Figure 1). For both connectors on the PCB, the coloured side of the

cable faces the centre of the PCB

3. Slidethe PCB intothe main body (8)fromthe top (windvane end),

threading the lower ribbon cable through as the PCB enters. The PCB

is tapered and fits narrow end first

4. CheckthattheO-rings(3)ontheanemometer(10)andwindvane(2)

heads are not damaged, distorted or loose and are free of grease and

dirt.Replaceorcleanas necessary

5. Plugthelower ribbon cable (5) into PL1 of the anemometer PCB(9)

(see detail in Figure 1), ensuring that the cable is not twisted. The

coloured side of the cable faces the outer edge of the board

6. Push the anemometer head (10) into the main body (8), ensuring that

thehead isfullyhome andtheribbon cable(5)is nottwisted

7. Plugthe lowerribboncable (5)intoPL1 ofthewind vanePCB(4) (see

detail in Figure 1), ensuring that the cable is not twisted. The coloured

side of the cable faces the outer edge of the board

8. Pushthewind vane head (2) into themainbody,ensuringthat the head

isfullyhome and the ribbon cable (5)isnottwisted

9. Fit the cup assembly (11) to the lower shaft and the wind vane (1) to the

upper shaft. Insert and tighten the grub screws (12). Check that the

vane and cups rotate freely in both directions.

ST80 Active Wind Transducer

ST80ActiveWindServiceProcedures 83067-1 7

Z219

1. Wind vane

2. Wind vane head

3. 'O' ring (2 off)

4. Nut

5. Ribbon cable

6. SeaTalk cable

7. Main PCB

8. Body

9. Anemometer head

10. Cup assembly

Ribbon connector detail

Open

position

Closed

position

Red Screen

Yellow

PL1

PL2

PL1

D2711-1

Figure1ExplodedView

ST80 Active Wind Transducer

8 ST80ActiveWindServiceProcedures 83067-1

Z219

5. Functional Test

5.1Preliminary Inspection

Beforetesting,inspecttheequipmentforphysicaldamage(crackedor

broken case, bent/corroded/burnt connector pins, etc.). Clean off any

grease, dirt or deposits in or on the equipment.

Check for signs of water ingress. Check for damage to the pod PCB, in

particular, overheating on the power supply input pinsandPCBtracks.

5.2 Test Equipment

D2712-1

1352

1. Known good ST80 wind head

2. Daisychain cable

3. Power cable

4. 5A Fuse/circuit breaker

5. 12V 5A power supply

6. ST80 Active wind

transducer under test

Figure2TestEquipmentConnection

ST80 Active Wind Transducer

ST80ActiveWindServiceProcedures 83067-1 9

Z219

5.3Functional TestFlowchart

CONNECT POWER AND SWITCH ON.

SET APPARENT WIND SPEED

CHANGE PCB

& RESTART

POWER OFF; END OF TEST

CHECK DISPLAY SHOWS ZERO

SPEED, NOT BLANK OR DASHES

00.0

CHECK CONNECTING

CABLES

ROTATE ANEMOMETER, CHECK

LCD RESPONDS BY INDICATING

A WIND SPEED

ROTATE WINDVANE, CHECK

INSTUMENT POINTER FOLLOWS

VANE MOVEMENTS

KTS

app

CHECK CONNECTING

CABLES

CHECK CONNECTING

CABLES & RETRY

CORRECT FAULT

& RESTART

CORRECT FAULT

& RESTART

CHANGE PCB

& RESTART

CORRECT FAULT

& RESTART

CHANGE PCB

& RESTART

ST80 Active Wind Transducer

10 ST80ActiveWindServiceProcedures 83067-1

Z219

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