STD20 ServiceMan

Raytheon Marine GmbHHigh Seas ProductsPostfach 1166D -- 24100 KielGermanyTel +49--4 31--30 19--0Fax +49--4 31--30 19--291Email [email protected]

R

2771E/110--800.DOC032 Edition: 14. Dec. 1999Revised: 31. Oct. 2002Revised: March 27, 2003

Gyro CompassSTANDARD 20

Type 110 -- 800, 110 -- 804 and 110 -- 806

Consisting of:-- Gyro Compass Casing with outer Sphere, Type 110 -- 222,-- Supporting Liquid, Type 148 -- 162,-- Distilled Water, Type 148 -- 398 and-- Gyrosphere, Type 111 -- 006

SERVICE MANUAL

1 Installation and First Putting into Operation2 Maintenance, Shipboard Repair, Spare Parts Catalogue3 Construction, Operating Principle, Technical Data

Weitergabe sowie Vervielfältigung dieser Unterlage, Verwertung undMitteilung ihres Inhaltes nicht gestattet, soweit nicht ausdrücklichzugestanden. Zuwiderhandlungen verpflichten zu Schadenersatz.

Copying of this document, and giving it to others and the use orcommunication of the contents thereof, are forbidden without expressauthority. Offenders are liable to the payment of damages.

Toute communication ou reproduction de ce document, touteexploitation ou communication de son contenu sont interdites, saufautorisation expresse. Tout manquement à cette règle est illicite etexpose son auteur au versement de dommages et intérêts.

Sin nuestra expresa autorización, queda terminantemente prohibida lareproducción total o parcial de este documento, así como su usoindebido y/o su exhibición o comunicación a terceros. De los infractoresse exigirá el correspondiente resarcimiento de daños y perjuicios.

Gyro Compass STANDARD 20Service Manual

TechnicalDocumentation

IEdition: 24. Nov. 1999 2771E/110--800.DOC032

Contents: Page

Safety RegulationsDeclaration of Conformity acc. to EC Directive 96/98/EC

1 Putting into Operation 1 -- 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.1 Scope of Delivery 1 -- 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.2 Procedure 1 -- 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.3 Preparing the Installation of the Gyrosphere 1 -- 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.4 Installing the Gyrosphere 1 -- 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5 Filling in of the Distilled Water and the Supporting Liquid 1 -- 6. . . . . . . . . . . . . . . . . . . .1.6 Putting in the Outer Sphere into the Compass Casing 1 -- 8. . . . . . . . . . . . . . . . . . . . . .1.7 Display Indications after Switching--on of Gyro Compass Equipment STD 20 1 -- 10. .1.8 Compass Zero Adjustment (Reference Course Input) 1 -- 11. . . . . . . . . . . . . . . . . . . . . . .1.8.1 Procedure 1 -- 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.9 Readout of the Gyro Compass Data 1 -- 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.10 Checking and Adjusting the Height of Gyrosphere 1 -- 17. . . . . . . . . . . . . . . . . . . . . . . . . .1.11 Switching off the internal Follow--up System of the Gyro Compass 1 -- 18. . . . . . . . . . .1.12 Test to be performed during Settling Phase or Normal Operation resp. 1 -- 19. . . . . . . .1.13 Settling Time Bridge--over 1 -- 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.14 Clear Register 1 -- 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.15 Adjustment of the Polarity for the R.o.T. Output Signal 1 -- 22. . . . . . . . . . . . . . . . . . . . . .1.16 Measuring the Pick--off Voltage1) 1 -- 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Care, Maintenance and Shipboard Repair 2 -- 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.1 Safety Regulations 2 -- 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2 Maintenance 2 -- 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2.1 Maintenance Schedule 2 -- 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2.2 Checking the Level of the Supporting Liquid 2 -- 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2.2.1 Check Performance 2 -- 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2.2.2 Refilling Operation of Double--distilled Water 2 -- 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2.3 Exchanging the Supporting Liquid and the Distilled Water 2 -- 8. . . . . . . . . . . . . . . . . . .2.2.3.1 Removing the Outer Sphere from the Compass Casing 2 -- 8. . . . . . . . . . . . . . . . . . . . .2.2.3.2 Pouring away the Supporting Liquid and the Distilled Water 2 -- 10. . . . . . . . . . . . . . . . .2.2.3.3 Taking the Gyrosphere out of the Outer Sphere 2 -- 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2.3.4 Filling up the new Liquids 2 -- 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2.3.5 Putting in the Outer Sphere into the Compass Casing 2 -- 14. . . . . . . . . . . . . . . . . . . . . .

2.3 Shipboard Repair 2 -- 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.1 Signalling in Case Warnings have occurred 2 -- 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.2 Search Aids in Case of Warnings 2 -- 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.3 Aids to Trouble Shooting 2 -- 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.4 Checking the Cabling 2 -- 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


II Edition: 24. Nov. 199912771E/110--800.DOC032

2.3.5 Exchanging of Parts 2 -- 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.5.1 Sensor Electronics 2 -- 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.5.2 Gyrosphere 2 -- 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.5.3 Temperature Sensor and Overtemperature Fuse 2 -- 25. . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.5.4 Heating Cartridge 2 -- 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.5.5 Fan 2 -- 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.5.6 Brush Group and Collector Ring Board 2 -- 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3.4.6 Encoder 2 -- 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3.5 Pump 2 -- 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Spare Parts Catalogue 2 -- 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.4.4 Notes on Ordering 2 -- 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Construction and Operating Principle 3 -- 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1 Construction 3 -- 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.1 Supporting Plate 3 -- 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.2 Joint 3 -- 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.3 Outer Sphere and Pump 3 -- 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.3.1 Upper Outer Sphere Shell 3 -- 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.3.2 Lower Outer Sphere Shell 3 -- 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.4 Gyrosphere 3 -- 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.5 Sensor Electronics 3 -- 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.6 Casing 3 -- 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Operating Principle 3 -- 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.1 Gyro System 3 -- 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.2 Hydrostatic, Dynamic Suspension and Centring of the Gyrosphere in the

Outer Sphere 3 -- 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.3 Power Supply of the Gyrosphere 3 -- 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.4 Electric Pick--off and Follow--up for Course Transmission 3 -- 14. . . . . . . . . . . . . . . . . . . .3.2.5 Controlling the Temperature of the Outer Sphere Group 3 -- 14. . . . . . . . . . . . . . . . . . . . .3.2.6 400 Hz Supply 3 -- 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.7 Temperature--dependent Functions 3 -- 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Technical Data 3 -- 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3.1 Dimensions 3 -- 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3.2 Weight 3 -- 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3.3 Electrical Data 3 -- 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3.4 Accuracies 3 -- 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3.5 Environmental Conditions and Other Requirements 3 -- 18. . . . . . . . . . . . . . . . . . . . . . . .

Index A -- D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Annexes



IIIEdition: 24. Nov. 1999 2771E/110--800.DOC032

Safety Regulations:

Warning!Use care during maintenance and repair to avoid contact withenergized electrical conductors. Applicable safety regulationsmust be followed, suchasVDE,VBG4,OSHA1919, andotherconsensus safety standards.

Caution!

� Maintenance and repair must be performed by trained andqualified personnel who are knowledgeable in equipmentsafety requirements!

� Device may be damaged!Exchange of spare parts only with the supply voltage swit-ched off.

� When thegyro compass is switchedoff, the rotors come toastandstill not before a running--down time of approx. 15 to30 min has elapsed. During this time, no intervention in thegyro compass must be made.The gyrosphere might be damaged !

� Without built--in gyrosphere, the gyro compass equipmentSTANDARD 20 must not be put into operation: otherwise an error mes-sage appears.Do not switch on the 24 V supply voltage!

� Check the level of the supporting liquid only while the ship is lying in aharbor. The gyro compass STANDARD 20 must be in operation duringthis time.

� To avoid failure of the device, pay attention to the warnings indicatedon the digital display, and eliminate the cause in good time.

� It is absolutely necessary to make the entry of the alignment error intothe table as -- if the sensor electronics is replaced -- the difference va-lue is required to ascertain the reference heading for the new PCB!


IV Edition: 24. Nov. 199912771E/110--800.DOC032

ATTENTIONObserve Precautions

for HandlingElectrostatic

Sensitive Devices

CAUTION

Handling of Electrostatic--sensitive Semiconductor Devices

Certain semiconductor devices used in the equipment are liable to damage due to static voltage. Observethe following precautions when handling these devices in their unterminated state, or sub--units containingthese devices:

1) Persons removing sub--units from an equipment using these devices must be earthed by awrist strap connected to the earthing point provided on the equipment.

2) Soldering irons used during the repair operations must be low voltage types with earthed tipsand isolated from the mains voltage by a double insulated transformer.

3) Outer clothing worn must be unable to generate static charges.

4) Printed Circuit Boards (PCBs) fitted with these devices must be stored and transported in anti--static bags.



1 -- 1Edition: 18. Sept. 1997 2771E/110--800.DOC032

1 Putting into Operation

1.1 Scope of DeliveryStandard scope of delivery of �Gyro Compass STANDARD 20, Type 110 -- 800�(see Fig. 1--1):-- Gyro Compass STANDARD 20 with outer sphere, distilled water and supporting liquid

(see Fig. 1--2)-- Gyrosphere in separate packing-- Tools and spare--parts box

Gyro compass with outer sphere,distilled water andsupporting liquid

Gyrosphere inseparate packing

Tools and spare--parts packet

Fig. 1--1: Scope of Delivery �Gyro Compass�

Standard scope of delivery of �Gyro Compass STANDARD 20, Type 110 -- 806�-- Outer sphere with distilled water and supporting liquid packed in the bridge steering

stand ComPilot 20 (see scheme Page 1--2)-- Gyrosphere in separate packing (see Fig. 1--1)-- Tools and spare--parts box (see Fig. 1--1)


1 -- 2 Edition: 18. Sept. 19972771E/110--800.DOC032

1.2 Procedure(1) Disassemble the transportation support with outer sphere, supporting liquid and di-

stilled water (Section 1.3)(2) Mount the compass casing on board ship. It is not required to mount the gyro com-

pass STANDARD 20 on board ship in the �ship�s ahead direction�. It can be installedin an optional position and easily accessible for servicing work. (Installation of theGyro Compass STANDARD 20 see Drawing No. 110 D 222 HP005)For reasons of safety, do not yet establish the cable connection to the distributorCOMPACT or to the control unit, resp.

Without built--in gyrosphere, the gyro compass equip-ment STANDARD 20 must not be put into operation:otherwise an error message appears.do not switch on the 24 V supply voltage!

(3) Installing the gyrosphere into the outer sphere (Section 1.4)(4) Filling in of the distilled water and of the supporting liquid (Section 1.5)(5) Putting in the outer sphere into the compass casing (Section 1.6)(6) Establish plug--and--socket connections to the distributor COMPACT or to the control

unit, resp., and switch on power supply.(7) Observe the heating and settling phase; pay attention to possibly occuring warnings

and error messages (Section 1.7, Sections 2.3.1 and 2.3.2)(8) Adjustment of the compass zero (reference course input) (Section 1.8)(9) Readout and controlling of the gyro compass data (Section 1.9)

Plastic container

Outer sphereBottles for-- supporting liquid-- distilled water

Pendulum joint



1 -- 3Edition: 05. Mar. 1999 2771E/110--800.DOC032

1.3 Preparing the Installation of the Gyrosphere-- Unscrew the two screws from the upper part of the door of the gyro compass casing,

lift out the door, pay attention to ground strap (not with Type 110--806).-- Carefully lift out the plastic container with the outer sphere and the two bottles of sup--

porting liquid and distilled water (see Fig. 1--2)-- Take the outer sphere out of the plastic container and place it on the three rigidly

mounted pins (siehe Fig. 1--3)

Caution!Risk of tilt--over!

Plastic container

Outer sphere

Bottles for-- supporting liquid-- distilled water

Pendulum joint

Fig. 1--2: Gyro Compass STANDARD 20 with Transportation Support


1 -- 4 Edition: 14. Febr. 19972771E/110--800.DOC032

1.4 Installing the GyrosphereRequired special tool: Suction cupProcedure:-- Loosen the six screws that connect the upper outer sphere with the lower outer

sphere (see Fig. 1--3).

Loosen6 screws

Pins

Fig. 1--3: Put--down Outer Sphere with Plug

-- Remove the upper outer sphere taking into account the cable loom from thelower outer sphere to the small PCB (see Fig. 1--4).

-- Lift the gyrosphere out of the transportation box and -- by making use of thesuction cup -- insert it carefully into the lower hemisphere (see Fig. 1--4).

-- Put the upper outer sphere again on the lower outer sphere.



1 -- 5Edition: 14. Febr. 1997 2771E/110--800.DOC032

Pay attention to the gasket of between the two outerspheres (see Fig. 1--4)!

-- Re--tighten the six screws (see Fig. 1--3).

Upper outer sphere

Gasket

Cable loom

Suction cup

Fig. 1--4: Upper and Lower Outer Spheres separated -- Inserting the Gyrosphere



1.5 Filling in of the Distilled Water and the Supporting Liquid(see Fig. 1--5)-- Unscrew three plastic screws (green, red and black) from the upper outer sphere (the

black screw serves de--aeration).

It is indispensable to observe the right order of pointsa) to g)!

Red Green Black

Red labelGaskets

Gasket

Dist. water

Dist. water Supporting liquid

Filler

Measuring cone

Fig. 1--5: Filling in the Liquids



1 -- 7Edition: 05. Mar. 1999 2771E/110--800.DOC032

a) Put the supplied filler onto the bottle of distilled water (red label).b) Fill the total amount of distilled water (230 cm3) into the filling hole (red screw).c) Screw in the red screw again; pay attention to gasket.d) Remove the filler from the empty bottle for distilled water and put it onto the

bottle of supporting liquid (green label).e) Fill approx. 840 cm3 of the contents of the bottle into the filling hole (green

screw).Pay attention to the fact that 840 cm3 will have been filled in when the measur--ing cone of the liquid level looks as follows:

This view is seen only to beginning of operation (after firstfilling--in or after changing the supporting liquid, resp.); dur-ing operation the dark circle has been smaller (refer to Sec-tion 2.2.2.2).

f) Supporting liquid that is not used must be poured away by all means!Special measures of disposal are not necessary.

g) Screw in the green screw again; pay attention to gasket.h) Screw in the black screw again; pay attention to gasket.



1.6 Putting in the Outer Sphere into the Compass Casing(see Fig. 1--6)-- Re--insert the outer sphere with the gyrosphere in the compass casing carefully:

Caution!Pay attention to the two locking pins of the closure!They must not be damaged, as they ensure the cor-rect angular position.

-- With both hands, take hold of the outer sphere and bring it to below the snap closuresof the pendulum joint.

Small

Outer sphere

plug

Pendulum joint

Fig. 1--6: Putting in the Outer Sphere into the Compass Casing



1 -- 9Edition: 05. Mar. 1999 2771E/110--800.DOC032

-- With your thumbs, press down two snap closures and make them lock into place-- Carefully turn the outer sphere through 90� and repeat the same procedure for the

other two snap closures. The outer sphere is now fast to the pendulum joint.

-- Put the cable with plug counterclockwise (viewed from above) around the outersphere and fasten the plug to the small PCB of the outer sphere; tighten safetyscrews.

-- Shut the door of the binnacle, pay attention to ground strap.

The gyro compass is now ready for work and can be put into operation by switching on the24 V power supply.



1.7 Display Indications after Switching--on of Gyro Compass Equipment STANDARD 20The following operating states of the gyro compass will be signalized:(See also Signalling of the Operating States on the Steering Repeater Compass or on theOperator Unit, resp. in the corresponding description).

After switching--on of the gyro compass equipment, the digital display indicates:

Indications Comments, Notes

¡ Heating Phase

During the heating phase indication of the temperature of thesupporting liquid.for example:

h : heating phase28.8 : 28.8 �C

© Settling Time

As soon as the lower operating temperature of 45 �C isreached:

-- automatical switching--on the compass internal follow--upsystem by the sensor electronics

-- during a settling time of approx. 3 h, heading indication witha luminous point added to the last digit

¢ Heading Indication

After termination of the settling procedure:-- heading indication

This indicated heading value, however, cannot yetbe used; it must still be corrected by entering thereference course! (see following Section 1.8)




1.8 Compass Zero Adjustment (Reference Course Input)After installation of the gyro compass, adaptation to themounting site is required. Compasszero adjustment takes place via switch B11 and push--button B14 on the sensor electronicsPCB.

1.8.1 ProcedurePrerequisite:-- The gyro compass equipment must be in operation at least 5h.

(1) Preparing the adjustment:-- Ascertain the reference course from the course direction of the ship�s fore--and--aft line

(e.g. take bearing or draw the pier course from the sea chart) and note it; e. g.: 178.4�.-- Open the gyro compass; on the sensor electronics PCB, the push--button B14 and the

switch B11 become visible (see Fig. 1--7).

Push--button B14

Switch B11

A B C D

OPEN

E F G H

OFF

ON

Fig. 1--7: Position of Push--button and Switch in the Opened Gyro Compass Sensor



(2) Entry of the ascertained reference course valuePosition of the key B14 and switch B11, see Fig. 1--7

Ser. No. Activity Indication Remarks, Notes

1 Switch B11 / A to OFF

100� 10� 1� 1/10�

All connected course indica-tions do not follow the coursechange any longer.

-- The flashing decimal place requests a valuealteration

2Actuate the key B14 until the firstdigit of the calculated value ap-pears

3 Pause of actuation > 5s -- The next--lower decimal place flashes and re-quests a value alteration

4Actuate the key B14 until thesecond digit of the calculatedvalue appears


6Actuate the key B14 until thethird digit of the calculated valueappears


6Actuate the key B14 until thefourth digit of the calculatedvalue appears

7After the end of the value input,set switch B11 / A to ON

-- Storing the difference value

-- Indication of the valid course value on the gyrocompass and on all repeater compasses con-nected



1 -- 13Edition: 05. Mar. 1999 2771E/110--800.DOC032

With that, the appropriate zero position for the encoder is determined. The display in thegyro compass now indicates the valid compass course which is also received by the re-peaters via the corresponding interface.

-- Read out the difference value (alignment error) (see Point 1.9, Step 5) and enter it intothe table found on the inner surface of the door

ALIGNMENT ERROR

--78.5

(Type 110--800 and 110--804) or on the supporting plate(Type 110--806).

Table forAlignment Errorwith Typ 110--806

It is absolutely necessary to make this entry as -- if the sen-sor electronics is replaced -- the difference value is requiredto ascertain the reference course for the new PCB!(See Section 2.3.4.1)

-- After inputting the difference value, close the door of the casing, pay attention toground strap.


1 -- 14 Edition: 30. May 19972771E/110--800.DOC032

1.9 Readout of the Gyro Compass DataCertain data of the gyro compass can be indicated on the display of the gyro compass, e.g.for servicing purposes:

A B C D

OPEN

E F G H

OFF

ON-- Switch B11 / H to

position OFF

Indications Comments,Notes

Indication of the r.o.t. value(rate of turn) in � / s.

With the ship berthed at the pier, the value is 0.A rate of turn direction with negative sign isindicated with a point behind the first decimaldigit.

by actuation of the key B14, call up furtherdatas in the following order:

Step 1 Temperature of the supporting liquid in � C.Desired value: 50 �C �1 �C

Step 2Start

Operation

Sum of gyro current and pump current (forstart or operation, resp.) in mA.Desired value: start 410 mA �50 mA

operation 290 mA �50 mA

Step 3(up to software

versionP02 E02.00)

Height of gyrosphere with operating tempera-ture in mm.Desired value: 1.0 mm to 2.3 mmDesired value foroptimal operating conditions: 1.9 mm

Step 3(from to soft-ware versionP02 E02.01)

Gyro compass isavailable

Gyro compass isnot available (E7)

Height of gyrosphere at operating tempera-ture is correct.

Height of gyrosphere is not correct!noappearswith height of gyrosphere <0.8mm

Also with the compass available, the height ofgyrosphere may be out of tolerance, there-fore, conduct the Section 1.10 now.



1 -- 15Edition: 31. Oct. 2002 2771E/110--800.DOC032

Anzeigen Bemerkungen,Hinweise

Step 4Conductance of the supporting liquid with op-erating temperature in �S / cm.Desires value: 300 �S / cm ... 900 �S / cm,

(range of tolerance)(see also Section 1.10)

Step 5 Difference of between the ship�s aheadcourse and the encoder value in �.(alignment error)

Step 6As Step 5 with the decimal point shifted to theleft.Herein, the first segmant indicating eitheror .

Signification: = negative value

= positive value

Step 7 Encoder value in �.

Step 8 As Step 7 with the decimal point shifted to theleft

Step 9 Settling time in min.Indication is given from 0 to max.180 min.A higher value is not displayed.

Step 10 Operating time (gyrosphere running time) inweeks.999 weeks are displayed as a maximum.


1 -- 16 Edition: 30. May 19972771E/110--800.DOC032

Anzeigen Bemerkungen,Hinweise

Step 11

A B C D

OPEN

E F G H

OFF

ON

Error Logbook.the error that has occured last is indicated(e. g. E04).

From software version P02 E01.00 on:The error logbook comprises a register with16 lines;16 error entries are possible.

Calling up the register:-- Set DIP switch B11 / G to OFF position

Under position 01 the error that has occuredlast is indicated, e. g. E4.

On actuating the key B14 the last error butone can now be called up, e. g. E5.Errors that have occured before are to becalled up with key B14, 16 error entries canbe indicated as a maximum; then the displaystarts again from the beginning, e. g.:

16 -- 701 -- 402 -- 5

After readout of all errors that have accumu-lated:-- Set DIP switch B11 / G to ON again.

Step 12 Sum of all automatic turn--on procedure oc-cured after errors have appeared.

Step 13Pending warnings.

Step 14Warnings (cont.)If no warnings are pending, only the c ap-pears; the other digits are dark.(see Table �Warnings�, Section 2.3.1)

Step 15

z. B.:

Current software program version of the gyrocompass.

After readout of all compass data: Set DIP Switch B11 / H to ON again!



1 -- 17Edition: 31. Oct. 2002 2771E/110--800.DOC032

1.10 Checking and Adjusting the Height of GyrosphereFor operation of the gyro compass with optimal height the following prerequisites mustbe fulfilled:-- Always push both tubes with spec. length of the tube (onto the pump unit and the

outer sphere) (see Fig. 1--8) up to the stop on the connections.-- Conductance (see Step 4 in Section 1.9) L = 300 ... 900 �S/cm-- Adjustment of the height of the gyrosphere under the above conditions:


Step 3(from software

versionP02 E02.01

on) A B C D

OPEN

E F G H

OFF

ON

Carry out the procedure in Section 1.9 up toStep 3

additionally switch G to position OFF

Indication of the direction of the rotation at thepotentiometer (see Fig. 1--8) for the flow con-trol of the pump, which effects the correctionof the gyrosphere height:

-- Indication c (clockwise):gyrosphere too high

-- Indication cc (counterclockwise):gyrosphere too low

-- Turn carefully the potentiometer to therequired direction until the indicationHYES appears

-- Set switch G to position ON again.

Fig. 1--8: Position of the potentiometer for the adjustment of the capacity of pump

c

cc

86 mm

75 mm

Manual measurement of the height of gyrosphere refer to Page 2--5, Fig. 2--3



1.11 Switching off the Internal Follow--up System of the Gyro CompassThe internal follow--up system will automatically be switched on only from a supporting liq-uid temperature of �45 �C.For servicing purposes (e. g. correct internal follow--up of course indications on the repeatercompasses), the internal follow--up system can be switched off as follows:

A B C D

OPEN

E F G H

OFF

ON

-- Set DIP switch B11 / G toOFF = internal follow--up systemOFF.


With the internal follow--up system switched off, the digital dis-play now indicates the last course value with an illuminatedpoint added to the last decimal digit.

The outer sphere can now manually be turned into any position, the digital display alwaysindicating the corresponding angular value.

-- Set DIP switch B11 / G to ON again = internal follow--up system ON.


The digital display now indicates the supporting liquid tempera-ture for a short time (during internal follow--up) and

then again the actual course with -- for a duration of approx. 1min -- an illuminated decimal point added to the last digit.




1.12 Test to be performed during Settling Phase or Normal Operation resp.With this test, the function of the digital display, of the fan and of the steppingmotor (internalfollow--up system) can be tested.

A B C D

OPEN

E F G H

OFF

ON

-- Switch B11 / F toposition OFF

-- Actuate key B14 (Abb. 6)


Whilst the key is depressed:-- On the digital display, all luminous segments are lighted.-- The fan must be in operation.-- If the operating temperature is still t < 45 �C, the internal

follow--up system switches on. The stepping motor turnsthe outer sphere to the instantaneous course value of thegyrosphere.With t > 45 �C, the internal follow--up system has alreadyswitched on; therefore, it is not necessary for the steppingmotor to turn the outer sphere to the instantaneous coursevalue.

After test:-- Switch B11 / F to position ON


1 -- 20 Edition: 07. Nov. 19972771E/110--800.DOC032

1.13 Settling Time Bridge--overFor the purpose of checking the gyro compass during short--time switch--off, the followingsettling time of 3 h need not be waited for; the settling time can be �bridged�. The gyro com-pass then signalizes �available�.


During settling time:-- Digital display indicates the heading with a full stop

behind the last position.

Heading value still imprecise and not usable!

A B C D

OPEN

E F G H

OFF

ON

-- Set switch C to positionOFF

-- Actuate the key B14

With that, the settling phase is �bridged�:


-- Digital display without a full stop behind the last position.

After the test: -- Set switch C to position ON

The gyro compass equipment continues to indicate a course value in the

settled condition, although the gyro compass has not yet settled! In order to

visualize the settling process, switch the equipment off and then on again.




1.14 Clear RegisterThe values listed in Section 1.9, Steps 10 to 12, can be reset to 0.

A B C D

OPEN

E F G H

OFF

ON

-- Switch B11 / H toposition OFF

-- By means of key B14 (fig. 1--6), select the desired step, e. g.:


Step 11 Error logbook.The error that has occurred last is indicated

A B C D

OPEN

E F G H

OFF

ON

-- Switch B11 / F toposition OFF


Step 11 -- By means of key B14, reset the holevalues to 0.

In the same way, the stored operating time (Step 10) and the stored sum of all automaticswitching--on procedures (Step 12) can be erased.

-- Set switch B11 / F and H on position ON again!


1 -- 22 Edition: 07. Nov. 19972771E/110--800.DOC032

1.15 Adjustment of the Polarity for the R.o.T. Output SignalThe R.o.T. output signal is set to polarity positive (+) for Raytheon Anschütz devices whentheship is turning to port. For deviceswith polarity �--� to port, the sign of the output signal canbe changed as s:

A B C D

OPEN

E F G H

OFF

ON

-- Set switch B11 / B to positionOFF


Indication of the polarity of the R.o.T. output signal:

-- Polarity �+� or

-- Polarity �--�

With push--button B14 (Fig. 1--6) the polarity can be changed

After changing:-- Set switch B to position ON again

1.16 Measuring the Pick--off Voltage1)

The voltage of between the outer sphere and the gyrosphere must be as low as possible.With a voltage level corresponding to an angular difference of between outer sphere andgyrosphere of approx. 0.04�, the outer sphere is caused to follow up the gyrosphere. Thisvalue must not be exceeded.

A B C D

OPEN

E F G H

OFF

ON

-- Set switches B11 / F andH to position OFF

Indications Comments, notes

-- Difference value in �

A permanent difference value � 0.04� with the ship atrest (ship made fast to the pier) suggests a defect.

1) from software version P02 E01.00 on



2 -- 1Edition: 25. Aug. 1999 2771E/110--800.DOC032

2 Care, Maintenance and Shipboard Repair

2.1 Safety Regulations

Warning!Use careduringmaintenanceand repair to avoid contactwith energized electrical conductors. Applicable safetyregulations must be followed, such as VDE, VBG 4,OSHA 1919, and other consensus safety standards.

Caution!Maintenance and repair must be performed by trainedand qualified personnel who are knowledgeable inequipment safety requirements!

Device may be damaged!Exchange of spare parts only with the supply voltageswitched off.

To avoid damaging the cross--slotted screws during assemblyand disassembly, use a screwdriver of the model POZIDRIV.


2 -- 2 Edition: 10. Mar. 19982771E/110--800.DOC032

2.2 Maintenance

2.2.1 Maintenance Schedule

Ser. No. Care and Maintenance Time Interval CrossReference

1 Exchanging the supporting liquid every 3 years 2.2.2

2 Exchanging the distilled water every 3 years 2.2.2

Maintenance of the gyro compass is restricted to exchanging the supporting liquid, the re-newal of the distilled water and the appertaining gaskets every three years.

To avoid failure of the device, be sure to check the level of the supporting liquid regularly(see Section 2.2.2).



2 -- 3Edition: 05. Mar. 1999 2771E/110--800.DOC032

2.2.2 Checking the Level of the Supporting Liquid

Check the level of the supporting liquid only while the ship islying in a harbor.

2.2.2.1 Check Performance

-- Unscrew two screws from the upper part of the door of the gyro compass casing, lift outthe door, pay attention to ground strap (not for type 110--806).

-- Switching off the Compass internal Follow--upSystemof theGyroCompass (seeFig. 2--1):

Gyro compass STANDARD 20 must be in operation!

A B C D

OPEN

E F G H

OFF

ON

-- Set DIP switch B11 / G toOFF = internal follow--up systemoff.

The outer sphere can nowmanually be turned into any position, the digital display always indi-cating the corresponding angular value.

-- Hold the bottom of the quick--release fasteners with both hands (refer to Fig. 2--1) andrelease they by pressing with your thumbs.

-- Carefully turn the outer sphere 90� and repeat the same procedure with the other quickrelease fasteners. The outer sphere is now open to view and can be removed.


2 -- 4 Edition: 05. Mar. 19992771E/110--800.DOC032

Switch B11

A B C D

OPEN

E F G H

OFF

ON

Outer sphere,pump andgyro system

Fig. 2--1: Removing the Outer Sphere from the Compass Casing and Switch B11

-- Continue to hold the outer sphere with both hands, lower it slightly (thereby releasing thelocking device) and carefully remove it from the compass casing and put it on the three fixedpins in a horizontal position (refer to Fig. 2--2); cable connection must be preserved!




2 -- 5Edition: 05. Mar. 1999 2771E/110--800.DOC032

Pins

Fig. 2--2: Put down Outer Sphere

-- Check the supporting liquid level on the measuring cone (see Fig. 2--4);-- Unscrew the red plastic screw and check the liquid level of the distilled water by the dipstick,

Type 148--472 (Depot Maintenance Tools) (see Fig. 2--3).

max. (230cm3)

min. (50cm3)

Level of thedist. Water

Height of theGyrosphere

normal

Reference: Surfacemeasuring cone

approx. 2 mmGyrosphere rests in theouter sphere!

Fig. 2--3: Checking the Level of the dist. Water and the Height of the Gyrosphere


2 -- 6 Edition: 05. Mar. 19992771E/110--800.DOC032

If the level of the supporting liquid is under the label �min.� of the dipstick, distilledwater must beadded acc. to Section 2.2.2.2.

Exchange the supporting liquid acc. to Section 2.2.3, when:-- the liquid level is no more sensible on the measuring cone and-- the liquid level is under �min.�, checked at the dipstick,-- the last changing of the supporting liquid was carried out 2 to 2,5 years ago.

2.2.2.2 Refilling Operation of Distilled WaterWith Dipstick (Refer to Fig. 2--3):-- Fill in distilled water at the red screw and check the precise height of the distilled water level

with the dipstick

Dipstick not available (refer to Fig. 2--4):-- Pour out remaining distilled water through the filler neck (red) by an injector (tool supplied).

-- Measure out 230 cm3 of distilled water

-- Fill in this portion of distilled water at the red screw

Measuring cone

Filler

red black

Gasketsdestilled Wasser

Top view measuring cone

Fluid level:good/OK

too low

green

and here

Fig. 2--4: Refilling Double--distilled Water



2 -- 7Edition: 05. Mar. 1999 2771E/110--800.DOC032

Continue after Measuring with and without Dipstick:-- Screw the red screw back into position, observing the sealing-- Unscrew the two other plastic screws (green, black) from the upper outer sphere-- Add distilled water in at the green plastic screw until the condition �Fluid level good / OK� is

reached (refer to Fig. 2--4).-- Screw the green and black screws back into position, observing the sealing

-- Re--insert the outer sphere in the compass casing carefully

Caution!Pay attention to the two locking pins of the closure! They must notbe damaged, as they ensure the correct angular position.

-- With both hands, take hold of the outer sphere and bring it to below the snap closures of thependulum joint (see Fig. 2--1).

-- With your thumbs, press down two snap closures and make them lock into place

-- Carefully turn the outer sphere through 90� and repeat the sameprocedure for the other twosnap closures.The outer sphere is now fast to the pendulum joint.

A B C D

OPEN

E F G H

OFF

ON

-- Set DIP switch B11 / G toON = internal follow--up systemon.



2 -- 8 Edition: 05. Mar. 19992771E/110--800.DOC032

2.2.3 Exchanging the Supporting Liquid and the Distilled Water

2.2.3.1 Removing the Outer Sphere from the Compass Casing-- Switch off the 24 V supply voltage of the STANDARD 20 equipment

Caution!When the gyro compass is switched off, the rotors come to a standstillnot before a running--down time of approx. 15 to 30 min has elapsed.During this time, no intervention in the gyro compass must be made.The gyrosphere might be damaged !

-- Unscrew two screws from the upper part of the door of the gyro compass casing, lift outthe door, pay attention to ground strap (not for type 110--806).

-- Loosen the safety screws of the plug from the small board on the outer sphere and drawoff the plug (see Fig. 2--5).

Small

Outer sphere,pump andgyro system

plug

Fig. 2--5: Removing the Outer Sphere from the Compass Casing

-- Hold the bottom of the quick--release fasteners with both hands (refer to Fig. 2--5) andrelease they by pressing with your thumbs.

-- Carefully turn the outer sphere 90� and repeat the same procedure with the otherquick release fasteners. The outer sphere is now open to view and can be removed.



2 -- 9Edition: 10. Mar. 1998 2771E/110--800.DOC032

-- Continue to hold the outer sphere with both hands, lower it slightly (thereby releasingthe locking device) and carefully remove it from the compass casing and put it on thethree fixed pins (refer to Fig. 2--6).


Loosen6 screws

Pins

Fig. 2--6: Outer Sphere (removed) without Plug


2 -- 10 Edition: 10. Mar. 19982771E/110--800.DOC032

2.2.3.2 Pouring away the Supporting Liquid and the Distilled Water(refer to Fig. 2--7)-- Unscrew the green plastic screw in order to deaerate the system-- Unscrew the black plastic screw-- Hold the outer sphere with both hands and pour away the supporting liquid (special mea--

sures of disposal are not necessary). Supporting liquid must not be re--used!-- Unscrew the red plastic screw from the upper outer sphere and pour out remaining dis--

tilled water by the injector

Red

Green Black

Sealing ring

Sealing ring

Measuring cone

Dist. water

Supporting liquid

Fig. 2--7: Plastic Screws in the Outer Sphere



2 -- 11Edition: 10. Mar. 1998 2771E/110--800.DOC032

2.2.3.3 Taking the Gyrosphere out of the Outer SphereSpecial tools required: Suction cup

Injector-- Unscrew the six screws that connect the upper outer sphere with the lower outer

sphere (refer to Fig. 2--6)-- Remove the upper outer sphere, observing the cable loom from the lower outer sphere

to the small board (refer to Fig. 2--8)

Suction cup

Fig. 2--8: Upper and Lower Outer Sphere Separated --Taking out and Inserting the Gyrosphere

-- Lift the gyrosphere from the lower outer sphere with the suction cup (refer to Fig. 2--8)and store it in a safe place

-- Pour out the remaining supporting liquid from the lower outer sphere

tools supplied


2 -- 12 Edition: 10. Mar. 19982771E/110--800.DOC032

2.2.3.4 Filling up the new Liquids-- Place carefully the gyrosphere from its safe place with the suction cup in the lower outer

sphere (refer to Fig. 2--8)-- Replace the sealings (refer to Fig. 2--7)-- Place the upper outer sphere back on the lower outer sphere

Observe the sealing between the outer sphere shells(refer to Fig. 2--7)!

-- Screw the six screws back on (refer to Fig. 2--6)-- Fill up with new distilled water and fresh supporting liquid (see Fig. 2--9)

Observe the order of a) to g) exactly at all times!

Red Green Black

Red label

Gaskets

Dist. water

Dist. water Supporting liquid

Filler

Measuring cone

Fig. 2--9: Filling in the Liquids



2 -- 13Edition: 05. Mar. 1999 2771E/110--800.DOC032

a) Place the filling device on the bottle with distilled water (red label)b) Fill in the entire distilled water (230 cm3) at the red screwc) Screw the red screw back into position, observing the sealingd) Remove the filling device from the empty bottle of distilled water and place it onto thebottle with supporting liquid (green label)e) Fill in the 840 cm3 contents of the bottle at the green screw

When carrying out this procedure, make sure that the 840 cm3 are filled in when themeasuring cone shows the following:

This view is seen only to beginning of operation (after firstfilling--in or after changing the supporting liquid, resp.); dur-ing operation the dark circle has been smaller (refer to Sec-tion 2.2.2.2).

f) The remainder of the supporting liquid must be poured away (special measures ofdisposal are not necessary).

g) Screw the green screw back into position, observing the sealingh) Screw the black screw back into position, observing the sealing


2 -- 14 Edition: 10. Mar. 19982771E/110--800.DOC032

2.2.3.5 Putting in the Outer Sphere into the Compass Casing(see Fig. 2--10)-- Re--insert the outer sphere in the compass casing carefully:

Caution!Pay attention to the two locking pins of the closure!They must not be damaged, as they ensure the cor-rect angular position.

-- With both hands, take hold of the outer sphere and bring it to below the snap closuresof the pendulum joint.

Small

Outer sphere

plug

Pendulum joint

Fig. 2--10: Putting in the Outer Sphere into the Compass Casing



2 -- 15Edition: 05. Mar. 1999 2771E/110--800.DOC032

-- With your thumbs, press down two snap closures and make them lock into place-- Carefully turn the outer sphere through 90� and repeat the same procedure for the

other two snap closures.The outer sphere is now fast to the pendulum joint.

-- Put the cable with plug counterclockwise (viewed from above) around the outer sphereand fasten the plug to the small PCB of the outer sphere; tighten safety screws.


The gyro compass is once again ready for work and can be put into operation by switching onthe 24 V supply voltage.


2 -- 16 Edition: 05. Mar. 19992771E/110--800.DOC032

2.3 Shipboard Repair

Before carrying out repairs, we recommend that you readthrough the corresponding sections in Chapter 3 �Construc-tion and Operating Principle�.

2.3.1 Signalling in Case Warnings have occurred

To avoid failure of the device, pay attention to thewarnings indicated on the digital display, and elimi-nate the cause in good time.

After one or more warnings have occurred,the decimal point is flashing as long as thewarning is pending.

By pressing the key B14 (see Fig. 1--6), thewarnings ars indicated on the digital display .

Decimal point

The key is accessible after the door has been removed. For this:-- Screw out two screws from the upper part of the door of the gyro compass casing, lift out

the door, pay attention to ground strap.

Digital display after first key depression (keepkey pressed down)

Digital display after second key depression(keep key pressed down)

The following warnings are displayed:



2 -- 17Edition: 30. Apr. 1999 2771E/110--800.DOC032

2.3.2 Search Aids in Case of Warnings

Code ofWarning

Type of Warning Possible Cause Measure

c 1 1 Fan, restricted function 1.1 Cable contacts out of order

1.2 Cooling air supply disturbed

1.1.1 Check cabling(see Section 2.3.4)

1.2.1 Clean suction holes in the bottomor air outlet holes (fan grid)

c 2 2 Heating, restrictedfunction

2.1 Cable contacts out of order

2.2 Heating cartridge defective


2.2.1 Exchange heating cartridge(see Section 2.3.5.4)

c 3 3 Temperature > 65 �C 3.1 Ambient temperature too high(> 55 �C)

3.2 Fan with restricted function

3.1.1 Switch on air conditioning

3.2.1 Check fan; exchange,if applicable(see Section 2.3.5.5)

c 4 4 Temperature controller,restricted function

4.1 Temperature sensor defective 4.1.1 Exchange temperature sensor(see Section 2.3.5.3)

c 5 5 Ship�s mains interrup-tion with t � 45 �C

5.1 Ship�s mains disturbed 5.1.1 Check ship�s mains

c 6 *) 6 Height of gyrosphereout of tolerance

6.1 Pump operation disturbed 6.1.1 Inform Raytheon Anschütz Ser-vice

Example:

Heating and temperature controller with re-stricted function

After the cause of the warning �Ship�s mains interruption (c5)�has been eliminated, the point behind the lost digit will bealight for 3h; one starts out with the idea that during the time ofvoltage interruption a course change took place and, there-fore, the gyro compass is forced to settle anew.

*) Valid from software version P02 E02.02


2 -- 18 Edition: 30. Apr. 19992771E/110--800.DOC032

2.3.3 Aids to Trouble ShootingAfter an error has occurred, the course information is switched off. The gyro compass thenmakesup to4 re--startingattempts. After havingmadea4th fruitless attempt, the gyro compassremains switched off. The number of starting attempts as well as the last occurred error arestored and canbe visualized on the digital display by calling up the compass data (Section 1.9).

Code ofError

Type of Error Possible Cause Measure

E 1 1 Operating voltages incompass faulty

1.1 Sensor electronics defective 1.1.1 Exchange sensor electronics(see Section 2.3.5.1)

E 2 2 Gyro supply faulty 2.1 Sensor electronics defective 2.1.1 Exchange sensor electronics(see Section 2.3.5.1)

E 3 3 Encoder faulty 3.1 Cabling out of order

3.2 Sensor electronics defective

3.3 Encoder defective


3.2.1 Exchange sensor electronics(see Section 2.3.5.1)

3.3.1 Call Raytheon Anschütz Service

E 4 4 Gyro current faulty 4.1 Cabling out of order


4.3 Gyrosphere defective



4.3.1 Exchange gyrosphere(see Section 2.3.5.2)

E 5 5 Compass internal Fol-low--up faulty

5.1 Cabling out of order

5.2 Toothed belt jumped off


5.4 Step motor defective

5.5 Gearing out of adjustment


5.2.1 Put on the toothed belt again




E 6 6 Temperature sensorbreakdown


6.2 Temperature sensor defective



6.2.1 Exchange temperature sensor(see Section 2.3.5.3)


E 7 *) 7 Height of gyrosphereout of tolerance


7.2 Gyrosphere defective

7.3 Pump defective


7.2.1 Exchange gyrosphere(see Section 2.3.5.2)


*) No longer valid from software version P02 E02.02



2 -- 19Edition: 30. Apr. 1999 2771E/110--800.DOC032

Code ofError

Type of Error Possible Cause Measure

E 8 8 Breakdown in heating 8.1 Cabling out of order

8.2 Heating cartridge defective

8.3 Temperature fuse defective



8.2.1 Exchange heating cartridge(see Section 2.3.5.4)

8.3.1 Exchange temperature fuse(see Section 2.3.5.4)


E 9 *) 9 Overtemperature> 70 �C


9.2 Ambient temperature too high(> 55 �C)


9.4 Temperature sensor defective


9.2.1 Switch on air conditioning


9.4.1 Exchange temperature sensor(see Section 2.3.5.3)

*) No longer valid from software version P02 E02.02

2.3.4 Checking the Cabling-- Switch off the STANDARD 20 gyro compass equipment by switching off the 24 V

supply voltage

Caution!When the gyro compass is switched off, the rotors come toa standstill not before a running--down time of approx. 15 to30 min has elapsed. During this time, no intervention in thegyro compass must be made.The gyrosphere might be damaged!

-- Unscrew two screws from the upper part of the door of the gyro compass casing,lift out the door, pay attention to ground strap (not for Type 110--806)

-- Check visible cables (see Fig. 2--11) for crack or break-- Check fastening of the plug on the temperature PCB.


2 -- 20 Edition: 30. Apr. 19992771E/110--800.DOC032

Cable

Plug contact

Cable

Plug contact

Fig. 2--11: Cabling in the Gyro Compass



2 -- 21Edition: 05. Mar. 1999 2771E/110--800.DOC032

2.3.5 Exchanging of Parts

Caution!Device may be damaged!Exchange of spare parts only with the supply voltageswitched off.

2.3.5.1 Sensor Electronics-- Unscrew two screws from the upper part of the door of the gyro compass casing, lift out

the door, pay attention to ground strap (not for Type 110--806)-- Unscrew 6 screws (refer to Fig. 2--12)

3 screws

3 screws

Fig. 2--12: Fastening Screws for the Sensor Electronics


2 -- 22 Edition: 10. Mar. 19982771E/110--800.DOC032

-- Placeamiddle--sizedscrewdriver (max. 5mmdiameter) into theblindhole of the supportingplate (refer to Fig. 2--13) from below through the hole in the sensor electronics and use it aslever to pull out the sensor electronics carefully.

Sensor elec--tronics PCB

Plug group

Fig. 2--13: Lifting out the Sensor Electronics

-- Carefully remove the printed board and replace it-- Assembly/re--assembly in the reverse order.-- Put the gyro compass equipment STANDARD 20 into operation again by switching on

the 24 V supply-- Read the difference value (alignment error) from the inner surface of the door and, with

this value in acc. to the following description, Sections 1 to 3, calculate the requisite newvalue and enter it into the installed new sensor electronics PCB.

It is indispensable to carry out this last point, as the refer-ence course, depending on the installation position of thecompass, is still not stored on the new PCB. Otherwise, thecourse indication of the gyro compass would be incorrect.



2 -- 23Edition: 10. Mar. 1998 2771E/110--800.DOC032

(1) General information to put in the reference courseDuring the first putting into operation, the gyro compass has been adapted to themounting site. The difference value (alignment error) from this is noted inside of thedoor. With this value the new reference course has to be calculated and enteredagain.Pre--condition:-- The course is indicated on the digital display after restarting the equipment

(settling time of at least 1 h).

(2) Calculation of the value to be entered by taking into account the differencevalueRead--out and note the encoder value acc. to Section 1.9 Steps 7 and 8.Encoder value plus or minus difference value (dependent on sign)Example: Encoder value: 256.9�

Difference value from table on the inside of the door: --78.5�

Value to be entered: 178.4�

(3) Putting--in of the calculated course value: see Section 1.8.1 (2)


2 -- 24 Edition: 02. July 19992771E/110--800.DOC032

2.3.5.2 GyrospherePerform the operations acc. to Section 2.2.3; but under Section 2.2.3.4:-- By means of the suction cup, insert carefully the new gyrosphere into the lower hemi--

sphere (see Fig. 2--4).-- Exchange existing sealings

After assembly, the gyro compass must be set in operation and the compass zero point (refe-rence course) checked acc. to section 1.8 and corrected if necessary.

For gyro compasseswith built--in coarse synchro, the synchro zero pointmust also be checkedand possibly corrected acc. to section 2 �Zeroing of synchro and sin/cos potentiometer� in theappendix of the service manual.



2 -- 25Edition: 02. July 1999 2771E/110--800.DOC032

2.3.5.3 Temperature Sensor and Overtemperature FusePerform the operations stated under Section 2.2.3.1.Then:-- Draw off the plug contacts B2 and B3 (see Fig. 2--14)-- Unscrew the two screws by means of which the outer sphere PCB is held-- Carefully take off the PCB

2 screws

Plug contacts B2 and B3

Plug contact, upper calotte OK

Overtemperature fuse

Temperature sensor

Fig. 2--14: Outer Sphere PCB

ThePCB carries the temperature sensor N1 and the overtemperature fuseE1 (see Fig. 2--14);both are provided with heat conducting paste.

If the temperature fuse is defective:-- Exchange the temperature fuse, apply heat conducting paste to the new temperature

fuse



If the temperature sensor is defective, the complete PCB must be exchanged:-- Loosen all cable connections (W1, W2, RK, 3, 1, 2, UK and OK) at the plug contacts

(see Fig. 2--14 and Fig. 2--15)

Reversingcontact W1

Reversingcontact W2

Conductivitysensor RK

Plug contact,lower calotteUK

UK 2 1 3 RKW1 W2

2 13

Fig. 2--15: Cable Connections to the Outer Sphere PCB

-- Exchange outer sphere PCB-- Re--establish plug contacts; the cable ends are correspondingly lettered

Apply heat conducting paste to the temperature fuse ortemperature sensor, resp., and to the correspondingholes in the outer sphere.

-- Putting in the Outer Sphere acc. to Section 2.2.3.5




2.3.5.4 Heating CartridgePerform the operations stated under Section 2.2.3.1.Then:-- Carefully open the green screw on the outer sphere, thereby deaerating the outer sphere

(see Fig. 2--16)

Green

Sealing ring

Vent hole

Heatingcartridge

Sealing ring

Fig. 2--16: Exchanging the Heating Cartridge

-- Screw in the green screw again-- Seal the vent hole in the measuring cone (adhesive tape)

-- Carefully place the outer sphere on a prepared support (polyfoam, foamed material) withthe heating cartridge up; by this, the supporting liquid is prevented from running out,when the cartridge has been removed. Secure the outer sphere against rolling away!

-- Screw out four screws on the heating cartridge-- Draw off the plug contacts B2 and B3 (see Fig. 2--14)-- Carefully take out the heating cartridge; the heating cartridge dips into the supporting

liquid-- Insert new heating cartridge and exchange the sealing

☛



Turn the heating cartridge in the opening in such away that the plug contacts B2 and B3 can be pluggedon again.

-- Screw in the four screws again; the longer one for the cable support-- Putting in the Outer Sphere acc. to Section 2.2.3.5

2.3.5.5 FanPerform the operations stated under Section 2.2.3.1.Then:-- Draw off the compass cable from the distributor COMPACT or from the control unit, resp.-- Draw out the sensor electronics (see Section 2.3.5.1)-- Screw out all screws from the top of the compass casing except for the screw on the cable

duct.-- Lift out the supporting plate and place it -- underside up -- on a suitable support

SensorFan

Screws

electronics

Joint

Fig. 2--17: Fan on the Supporting Plate

-- Screw off the plug of the fan-- Screw out the screws of the angle of fan (see Fig. 2--17)-- Screw off the four screws by means of which the fan is mounted on the angle-- Exchange the fan-- Re--assembly to be made in reverse order-- Putting in the Outer Sphere acc. to Section 2.2.3.5




2.3.5.6 Brush Group and Collector Ring BoardCarry out all work as described below in section 2.2.3.1 .Then:-- strip off the compass cable from the control unit at the COMPACT distributor-- pull out the sensor electronics (refer to section 2.3.5.1)-- unscrew all topside screws at the compass housing except for the screw at the cable

lead--through plate-- lift out the supporting plate and place it upside down on a suitable supporting surface-- loosen the cable support at the joint (refer to Fig. 2--18)-- unscrew the 6 screws that connect the joint with the toothed disc

(refer also to Fig. 2--19/1)-- remove the toothed belt-- loosen the binder holding the cable at the toothed disc-- remove the joint together with the toothed disc and the flange, thereby pulling out the

cable through the drilling points-- unscrew the 3 screws in the centre of the flange (refer to Fig. 2--19/2)-- remove flange (refer to Fig. 2--19/3) with brush group (refer to Fig. 2--19/4)

In some compasses, between flange and encoder casing(see Fig. 2--19/8) three or six spacers are mounted(see Fig. 2--19/A), which are held by three screws (Fig. 2--19/2).The spacers must be carefully saved.

cable support atjoint

6 screws

cable binder attoothed disc

joint

Fig. 2--18: Supporting Plate on Base



1

2

3

4

5

6

7

8

9

10

A

Fig. 2--19: Supporting Plate -- Exploded Drawing -- (abstract from the replacement parts list)




a) Replacing the Brush Group:-- unscrew the 3 screws (refer to Fig. 2--19/5) holding the brush group on the flange-- Remove the protective cap from the new brush group

The brushes are polished and adjusted.Please do not touch!

-- replace the brush group

When mounting the brush group, press against the edge of theflange radially and then tighten the screws. This ensures that thebrushes will be put in the correct position with regard to the col-lector rings.Do not touch the collector rings with your fingers!

b) Replacing the Collector Ring Board-- unscrew the 6 screws (refer to Fig. 2--19/6) connecting the collector ring board (refer

to Fig. 2--19/7) with the encoding housing (refer to Fig. 2--19/8)-- replace the collector ring board

The new collector rings have been polished and adjusted in thefactory. Please do not touch!

-- When inserting the new collector ring board, only screw in the 6 screws but do not tightenthem. First insert the sensor electronics and then tighten the 6 screws.

The sensor electronics serves here as an installation aid forcorrect positioning of the collector ring board.

-- Then pull the sensor electronics back out.



Assembly is carried out in the reverse order; the spacers (Fig. 2--19/A) must be insertedagain.

After assembly, the gyro compass must be set in operation and the compass zero point (refe-rence course) checked acc. to section 1.8 and corrected if necessary.

For gyro compasses with built--in coarse synchro, the synchro zero point must also be checkedand possibly corrected acc. to section 2 �Zeroing of synchro and sin/cos potentiometer� in theappendix of the service manual.

2.3.4.6 EncoderCarry out disassembly work as described below in sections 2.2.3.1 and 2.3.5.6.Then:-- unscrew the 4 screws (refer to Fig. 2--19/10) connecting the encoder housing with the

supporting plate (refer to Fig. 2--19/9)-- replace the encoder

In older gyro compasses, the encoder is assembled in anadditional housing. The new encoder is assembled withoutthis housing.

After successful assembly, put the STANDARD 20 gyro compass into operation as de-scribed in section 1.7 and check the compass zero point (reference course) acc. to section1.8, correcting it if necessary.

For gyro compasses with built--in coarse synchro, the synchro zero point must also be checkedand possibly corrected acc. to section 2 �Zeroing of synchro and sin/cos potentiometer� in theappendix of the service manual.




2.3.5 PumpCarry out disassembly work as described in section 2.2.3.1.Then:-- unscrew the green plastic screw (refer to Fig. 2--20.) in order to ventilate the system-- unscrew the black plastic screw (refer to Fig. 2--20.)-- hold the outer sphere in both hands and pour out the supporting liquid;

depending on its age, the supporting liquid may be able to be re--used.

Carry out further disassembly in accordance with section 2.2.3.3.

red green black

sealing ring

sealing ring

measuring cone

Fig. 2--20.: Plastic Screws in the Outer Sphere



Then:-- lay the upper and lower outer spheres with their openings facing down onto a clean

cloth (refer to Fig. 2--21.) in order to catch any remaining liquid.

Fig. 2--21.: Upper and Lower Outer Spheres with Openings facing Down




-- pull off the return pipe for the supporting liquid (refer to Fig. 2--22./2) from theconductivity sensor (refer to Fig. 2--22./1)

-- pull off the cable at the pump (multipoint connector and lower calotte UK; Fig. 2--11)-- unscrew the 6 screws (refer to Fig. 2--22./3) holding the pump on the lower outer

sphere-- remove the entire pump including the rotor (refer to Fig. 2--22./4)-- insert the new pump and the new rotor, re--utilizing the pump disc (refer to

Fig. 2--22./5)-- assembly is carried out in the reverse order

2

3

1

4

575 mm

86 mm

Fig. 2--22.: Lower Outer Sphere -- Explosion Drawing (abstract from the replacementparts list)



2.4 Spare Parts Catalogue

The following replacement parts catalogue no is valid for the entire gyrocompass with the main assemblies:

-- basic equipment STANDARD 20 Gyro Compass, Type 110--222-- gyrosphere, Type 111--006-- supporting liquid, Type 148--162 and-- distilled water, Type 148--398

2.4.4 Notes on OrderingTo ensure fast processing of replacement parts orders and to make sure that the correct re-placement part is delivered, the following details are required:

1. Name of the ship2. Raytheon Anschütz order number:

e.g.: 610 0 616373. Device type (refer to type label) that the replacement part is required for:

e.g.: STANDARD 20 Gyro Compass, Type 110 -- 222 E014.4. Exact designation of the replacement part from the specifications given in the

replacement parts catalogue

Example:

Stock No. Designation Drawing No.

3.600 089 Sensor PCB 110--222.101 E01

5. Required number of parts

ErsatzteilkatalogSPARE PARTS

Kreiselkompaß STANDARD 20GYRO COMPASS STANDARD 20Type 110--800, 110--804, 110--806 CATALOGUE

14.483 2 -- 37

2 -- 38

Remark: Temperatursensor und/oder Temperatursicherung mit Wärmeleitpaste einsetzen. Enthalten in Pos. 100Temperature Sensor and/or TCO to be inserted with heat conducting paste. To be included in Pos. 100

ErsatzteilkatalogSPARE PARTS

Kreiselkompaß STANDARD 20GYRO COMPASS STANDARD 20Type 110--800, 110--804, 110--806 CATALOGUE

2 -- 39

Pos. Nû entrepôt Désignation Designation Nû de dessin Qte. Code fabr. Nû approvisionne-ment/Remarques

1 3600089 Sensorkarte SENSOR PCB 110--222.101 E01 1 D 2865 5998--12--343--5816

3603635 Sensorkarte, AT SENSOR PCB,reconditioned

110--222.101 E01 AT 1 D 2865

2 3608498 Gelenk HINGE 110--222.11 1 D 2865 6605--12--343--6318

3601339 Gelenk, AT HINGE, reconditioned 110--222.11 AT 1 D 2865

4 1504729 Zahnscheibe z= 256 TOOTHED WHEEL z = 256 110--222.01--008 1 D 2865 3020--12--349--5553

5 3514541 Flansch FLANGE 110--222.01--012 1 D 2865

6 3601361 Schleifringgruppe SLIP RING ASSEBLY 110--222.X15 1 D 2865 5977--12--349--1415

7 3601156 Elektr. Opt.Winkelgeber

ENCODER 110--222.x13 1 D 2575

8 3608582 Lüfter, vollst. FAN, COMPL. 110--222.08 1 D 2865 4140--12--343--3674

9 3608591 Schrittmotor, vollst. STEPPING MOTOR,COMPL.

110--222.47 1 D 2865 6105--12--343--4375

10 3608897 Kabel CABLE NB 03--914--3M 1 D 2865 6150--12--349--9727

11 3600144 Obere Hüllkugel UPPER HEMISPHERE 110--222.X09 1 D 2865 6605--12--349--5845

12 3608966 Heizung, kompl. HEATER, COMPL. 110--222.X02 1 D 2965 4520--12--348--1256

13 3608757 Hüllkugel PCB OUTER SPHERE PCB 110--222.22 1 D 2965 5998--12--343--5818

14 3600034 Lagerschale LOWER HEMISPHERE 110--222.X06 1 D 2865 3130--12--348--0756

3603029 Lagerschale, AT LOWER HEMISPHEREreconditioned

110--222.X06 AT 1 D 2865

15 3608916 Kalotte, unten LOWER CALOTTE 110--222.96 1 D 2865

16 3609274 Pumpe, kompl. PUMP, COMPL. 110--222.X04 1 D 2865 4320--12--348--2385

3601088 Pumpe kompl, AT PUMP, COMPL.reconditioned

110--222.X04 AT 1 D 2865

17 1502254 Tragflüssigkeit SUPPORTING LIQUID 148--162 E01 1 D 2865 6810--12--160--1000

18 1508499 Destilliertes Wasser DISTILLED WATER 148--398 1 D 2865

19 1507674 Kyappe FILLER PIPE 148--398.00--002 1 D 2865 5340--12--349--9869

20 4004566 Kreiselkugel, neu GYROSPHERE 111--006 E01 1 D 2865 6605--12--349--5847

4004792 Kreiselkugel, AT GYROSPHEREreconditioned

111--006 E01 AT 1 D 2865

21 Kreiselkompass STD 20,neu

GYRO COMPASS STD 20 110--222. NG001 D2865

Kreiselkompass STD 20, AT GYRO COMPASS STD 20reconditioned

110--222. AT

100 3604364 Satz Kleinteile für STD 20 SET OF SMALL PARTSFOR STD 20

110--222. X50 1 D2865

101 3608939 Satz Dichtungen SET OF GASKETS 110--222. X01 D 2865 5330--12--343--3789

3604365 Satz Schrauben für STD 20 SET OF SCREWS FORSTD 20

110--222. X17 D 2865

Kreiselkompaß STANDARD 20GYRO COMPASS STANDARD 20Type 110--800, 110--804, 110--806

All depicted items which are not mentioned in the text are not applicable for this unit. Since further development may necessitate making modifications toexisting equipment, its conformity with the relevant illustrations and drawings is not always ensured. RAYTHEON MARINE will be under no liabilitywhatever that may arise from any such differences.

14.483 RA/S--SU 0303 EDITION 072 -- 40

Ersatzteile ohne AbbildungSpare parts without Illustration

Pos. Nû entrepôt Désignation Designation Nû de dessin Qte. Code fabr. Nû approvisionne-ment/Remarques

36004761 Hüllkugel, kompl. OUTER SPHERE; COMPL. 110--222. X11 D 2865 6605--12--349--5848

36008601 Hüllkugel kompl.., AT OUTER SPHERE; COMPL.reconditioned

110--222. X11 AT D 2865 6605--12--349--5848

AT--(Austausch--)Teile / GeräteDas ausgebaute Teil/Gerät ist innerhalb 90 Tagen an unser Werk Kiel--Wik zu retounieren.Frachtkosten zu Lasten des Absenders

Reconditioned parts/unitsThe removed part/unit has to be returned within 90 days to our works Kiel--Wik, freight pre-paid.

__________________einschl. Pumpe und Flüssigkeitenincl. pump and liquids



3 -- 1Edition: 19. Nov. 1998 2771E/110--800.DOC032

3 Construction and Operating Principle

3.1 ConstructionThe Gyro Compass STANDARD 20 consists of the following main components:-- Basic equipment of Gyro Compass STANDARD 20, Type 110 -- 222, with

-- Supporting plate-- Joint-- Outer sphere and pump-- Sensor electronics-- Casing (Type 110--806 without casing)

-- Gyrosphere, Type 111 -- 006, and-- Supporting Liquid, Type 148 -- 162 with Distilled Water, Type 148 -- 398

Casing

Supporting

Joint

Outer sphere,Pump and

Sensor electronics

Fan

Gyro system

plate

Fig. 3--1: Gyro Compass STANDARD 20 -- Schematic Sectional Drawing



3.1.1 Supporting PlateThe supporting plate (Fig. 3--2) -- an aluminium cast construction with cooling ribs on its up-per side -- carries on its underside the electronics PCB, gear, joint and fan.

The 360� suspension of the sensor is ensured by an encoder, centrally flanged on the sup-porting plate andwith a resolution of 212 pulses/revolution. Thependulum joint for receivingthe outer sphere is attached to its shaft as well as the slip--ring assembly with the flange--mounted toothed belt wheel. Via a toothed belt, a transmission ratio of i = 5.12 from the fol-low--upsteppingmotor to theouter spheremounting is achievedvia thependulum joint. Dur-ing a fine step of the steppingmotor of 0.225�, therefore,0.044� / fine step are transmitted onthe 360� shaft.

Above the door, the supporting plate shows a window through which a 4--digit, 7--segmentLED indication on the sensor electronics is visible. The LED indication shows the uncor-rected course and -- in coded form -- status indications, warnings and errors.The slip--ring assembly has been designed as a PCB and contains 11 slip rings.

Sensor elec--tronics PCB

Toothed belt

Follow--upstepping motor

Cooling ribsEncoderSlip--ringassembly

Pendulum

Outer spheremounting

wheel joint

Fig. 3--2: Supporting Plate -- Sectional Drawing




3.1.2 JointThe pendulum joint that is directly flange--mounted on the encoder (Fig. 3--3) connects theouter sphere with the encoder; an absolute heading determination -- free from gear back--lash -- is therefore guaranteed.

The pendulum joint is coupled to a damping. A damping body in a highly viscous liquid re-duces the outer sphere vibration occurring during ship movement.A vibration isolation eliminates interference from outside by vibration and shock in the hori-zontal as well as in the vertical direction.

Both assemblies -- the pendulum joint with damping and the vibration isolation -- are in-cluded by a bellows. This has a high stiffness during radial strain; on the other hand, thebellows gives way slightly in case of axial and angular strain.

Bellows

Dampingbody

Highly viscousfluid

Fig. 3--3: Joint -- Sectional Drawing



3.1.3 Outer Sphere and PumpThe outer sphere (Fig. 3--4) consists of two assemblies that are connected to each other bysix screws.

3.1.3.1 Upper Outer Sphere ShellThe flow guide for the supporting liquid is in this assembly and -- centrally arranged -- theconductive upper calotte.

Pump

Distilledwater

Return forsupporting liquid

Printed wiringboard

Float valve Buffer store

Temperaturesensor

Heating

Gyrosphere

Upperoutersphereshell

Loweroutersphereshell

Reversingcontacts

Lowercalotte

Sensor forconductivity

Uppercalotte

Fig. 3--4: Outer Sphere and Pump -- Sectional Drawing




A store results in the partition in the upper part of this assembly; this forms the reserve vol-ume of the supporting liquid. By the formation of condensation, this store supplies distilledwater to supplement the amount of supporting liquid in the area of the outer sphere. Theamount to be supplemented is controlled by a float valve.

In the return area, a heat cartridge has been built in for temperature regulation in the upperouter sphere.

A transparent measuring cone serves for a visual check of the level of the supporting liquidand the horizontal positioning of the gyrosphere.

A printed wiring board is mounted on the upper outer sphere shell; this board is connectedvia plug and cable trunk with the slip rings. There is also a temperature sensor on the boardas well as an overtemperature fuse and a capacitor for the pump motor.

The outer sphere is fastened to the pendulum joint by quick--release fasteners in the upperouter sphere shell.

3.1.3.2 Lower Outer Sphere ShellThe lower outer sphere shell forms the actual liquid support for the gyrosphere. It also con-tains the electric reversing contacts at the height of the equator of the gyrosphere -- requiredfor the follow--up of the outer sphere -- and the conductive lower calotte.The pump for the supporting liquid is in the lower part of the lower outer sphere shell.

The supporting liquid is returned by a tube that guides the supporting liquid from the upperouter sphere shell to the suction area of the pump rotor. The sensor for measuring the con-ductivity has been built in here as well.



3.1.4 GyrosphereThegyrosphere (Fig. 3--5) contains the north--seeking two--gyro system. To reduce gas fric-tion to both gyro rotors and to avoid oxidation, the gyrosphere is filled with gas (helium) andhermetically sealed.

The gyrosphere is fitted with a conductive calotte at each pole -- corresponding to the outersphere. At the equator, there is a semi--circular conductive band for pick--off of the headingposition.

RotorRotor

Upper calotte

Lower calotte

Equator band

Fig. 3--5: Gyrosphere -- Sectional Drawing




3.1.5 Sensor ElectronicsThe printedwiring boardwith the sensor electronics (Fig. 3--6) is arranged as plug--in boardbelow the supporting plate. The following components are assembled on the board:-- processing of the digital angular value of the encoder as well as conversion into a serial

output signal-- setting of the encoder to zero-- reversing--contact signal--processing and control of the follow--up stepping motor-- 400Hz supply for gyro and pump motor-- evaluation of the height of the gyrosphere and conductivity of the supporting liquid-- temperature regulation of the outer sphere group-- digital heading display-- monitoring of the gyro run--up and automatic connection of the follow--up system

Fig. 3--6: Sensor Electronics PCB

Heat sink

Transformer

DIP switchProbeController

Choke

Heat sink

Choke



The sensor electronics PCB is connected via plugs to:-- the slip rings-- the stepping motor-- the encoder, and-- the fan

3.1.6 CasingThe cylindrical casing is provided with a door; when the door is removed, a cutout with anangular range of approx. 100� and the total height of the casing will be available for assem-bly and service purposes. The door is attached to the casing; the transition region is sealedwith rubber gaskets.

The casing floor contains the fastening bore--holes for board assembly as well as centrallyarranged perforations for the cooling air supply.A fan in the upper part of the casing supplies the air current required for any necessary cool-ing of the sensor.

The top of the casing is covered by the supporting plate (refer to Section 3.1.1).




3.2 Operating Principle

3.2.1 Gyro System(Refer to Fig. 3--7)The gyrosphere, in operation floating freely in the supporting liquid within the outer sphere,constitutes the north--indicating system. Two gyros installed in the gas--tight gyrosphereand driven by AC produce, in conjunction with the combined effects of the earth�s rotationand gravitation, a directive force which causes the gyrosphere to settle on the geographicnorth--south line. Two mechanically coupled gyros with gyro vector axes at right angles toeach other are used in order to avoid errors caused by the ship�s roll and pitch motions.

When the gyro compass system is switched on, the gyro rotors begin to run up. The gyro-sphere now oscillates about the north--south direction under the effects of gravity and theearth�s rotation.

Directive forceGyro I

Resultant directiveforce

N

Fig. 3--7: Gyro System -- Principle

Directive forceGyro II



A damping system incorporated in the gyrosphere damps these oscillations until the gyro-sphere comes to rest (approx. 3 hours) and the resultant vector axis of the gyro system indi-cates the north--south direction (Fig. 3--8).

Settling time

Settling curve

0� 60� 120� 180� 240� 300� 360�

(h)1 div. = 10 min

Fig. 3--8: Settling Curve




3.2.2 Hydrostatic, Dynamic Suspension and Centring of the Gyrosphere in the OuterSphere(Refer to Fig. 3--9 and Fig. 3--11)When the compass equipment is switched on, the pump for the supporting liquid functionsaswell. The supporting liquid covers the gyrosphere and thereby forms the supporting bear-ing for the sphere.The weight of the gyrosphere and the specific gravity of the supporting liquid are adjustedexactly so that, with the gyro compass at operating temperature, the gyrosphere has a slightresidual weight. This residual weight is cancelled by the liquid steam produced by the pumpwhich thereby simultaneously centres the sphere. In this way, the gyrosphere floats freely inthe outer sphere.

A conductive tube is built into the fluid return line for themeasurement of the conductivity ofthe supporting liquid. An alternating voltage at this location is constantly fed to a controllerand evaluated there.

Return of supportingliquid

Pump

Sphere

Fig. 3--9: Hydrostatic Suspension -- Principle



To determine the height of the gyrosphere, on the one hand the mean distance of the gyro-sphere from the reversing contacts is used and on the other the mean distance of the gyro-sphere from the calottes via resistancemeasurements. The resulting values are processedand evaluated in a controller.

3.2.3 Power Supply of the Gyrosphere(Refer to Fig. 3--10 and Fig. 3--11)Thegyro rotors requireanACsupply of 55V/400Hz in order to achievea speedof rotationofapprox. 12,000 rev./min.The electric current for supplying the gyro rotors passes via the ca-lottes of the outer sphere through the slightly basic, and therefore conductive, supportingliquid to the calottes of the gyrosphere. The third phase required for the rotors is formed inthe inside of the sphere with the aid of a capacitor.

Reversing

Outer sphere

W1

W2

M1

Equator band

Symmetricaltransformer

Lowercalotte

Uppercalotte

R1

R 2

contact

Reversingcontact

Fig. 3--10: Principle of Current Transmission and Course Pick--off




Gyrofeed

24VDC -- Ship�s mains

Powersupply

0 V

55V 400Hz

DistributorCOMPACT

Signal processing(Reversing contactsignal, height, etc.)

Conductivity,temperatureetc.

Opto--encoderSignal processingHeating controlMicroprocessorInterfaceWatchdogDisplay

Serialinter--face

RS 422�P

Heatingcontrol

Watch--dogcircuit

Heading display

Fig. 3--11: Block Diagram STANDARD 20

DC/DC--converter

HEADING SERIAL

Follow--upstepping motor

+control

Opto--encoder

Heating



3.2.4 Electric Pick--off and Follow--up for Course Transmission(Refer to Fig. 3--10 and Fig. 3--11)At the equator of the sphere there is a conductive band; its ends are designed for pick--off ofthe sphere position with regard to the outer sphere. The pick--off has been designed asbridge circuit and is part of the follow--up system.

The bridge circuit comprises the primary windings from the connected symmetrical trans-former as well as both transfer resistances R1 and R2 of the supporting liquid between re-versing contactsW1andW2of the outer sphere and the ends of the conductive band on thegyrosphere.When the ship changes direction, the outer sphere rotates against the gyrosphere. A count-er--rotation of the transfer resistances R1 and R2 results. Due to the resulting asymmetry inthe bridge circuit, an electric voltage that is dependent on the direction of rotation is pro-duced.Via an amplifier, this voltage activates a stepping motor that makes follow--up the outersphere via a toothed belt until the transfer resistances are balanced. The position of theouter sphere now once again corresponds with that of the gyrosphere.

The sensitivity of the follow--up system iswithin the limits of static exactitude. In this way, therelation of the current heading to the azimuth is guaranteed.

The symmetrical transformer required for follow--up is on the printedwiring board of the sen-sor electronics. A controller supplies digital control signals to integrated stepping motorcomponents. A stepping motor then makes follow--up the outer sphere to approx. 0.05� ofthe gyrosphere by mechanical reduction.

The gyro compass STANDARD 20 transmits the heading signal via the serial interfaceRS 422 HEADING SERIAL*) to the periphery.

3.2.5 Controlling the Temperature of the Outer Sphere GroupAn electronic sensor measures the temperature of the supporting liquid. Its signal is pro-cessed inamicrocontroller. In caseof under--temperature, this controller activatesaheatingcartridgeand in caseof over--temperature, it switches ona fan. In caseof prolongedheatingat over--temperature, a temperature fuse switches the heating off.

*) Ratheon Anschütz specific




3.2.6 400 Hz Supply(Refer to Fig. 3--11)From the 24 VDC ship�s mains, the converter on the sensor electronics forms a stable--fre-quencyACvoltageof 400Hzviaaquartz--controlled harmonic oscillator. Variable frequencyhalf sine waves are generated; these result from the integration of a pulse--width modula-tion.

Frequency stability is achieved by a quartz--controlled, PLL--regulated harmonic oscillator.An electronic fuse switches off the converter in case of short circuit, overload or other faults.

The converter has a suitable antijammer that suppresses disturbances (caused by theswitching regulator) to the outside.



3.2.7 Temperature--dependent FunctionsOperating functions that are dependent on the temperature of the gyro compass are illus-trated in Fig. 3--12.When the gyro compass is switched on the heating is also switched on. Follow--up isswitched on after a temperature of 45 �C has been reached; the heating then begins to re-duce its heating power proportionally down to 0% at 50 �C. From approx. 51 �C, the fan isswitchedon. If the temperature increasesup to65 �C, thenacodedover--temperaturewarn-ing is displayed on the heading indicator; this display changes to an over--temperaturealarm when 70 �C are reached. If the temperature continues to increase beyond this pointthen the temperature fuse shuts off the heating circuit at approx. 77 �C.

40 45 50 55 60 65 70 75 80

Follow--upOFF

Follow--upON

Temperature fuseHeating circuit

closed Heating circuitshut off

�C

Over--temp.warning

Over--temp.alarm

FanOFF

FanON

Heating100%

Heating0%

Fig. 3--12: Temperature--dependent Functions in the Gyro CompassSTANDARD 20



3 -- 17Edition: 18. Sept. 1997 2771E/110--800.DOC032

3.3 Technical Data

3.3.1 DimensionsType 110 -- 800 see Dimensional Drawing 110 D 222.HP005Type 110 -- 806 see Dimensional Drawing 110 D 222.HP018

3.3.2 WeightSensor Type 110 -- 800: approx. 16 kgSensor Type 110 -- 806: approx. 12 kg(gyro compass with gyrosphere and supporting liquid)

3.3.3 Electrical DataSupply voltage 24V DC

(18 to 36 V)

Power consumption:-- Sensor (run--up): 35 W-- Sensor (operation): 30 W-- Heating: max. 75 W (temporarily)-- Fan: 3 W (temporarily)

3.3.4 AccuraciesSettle point error: �� 0.1� x secLat.Static error: �� 0.1� x secLat., RMSDynamic error: �� 0.4� x secLat.(periodic roll and pitch + horizontal acceleration)

(secLat. = 1/cos Latitude)

Settling time: 3 hRate of follow--up: 70�/sPermissible rate of turn: unlimitedAcceleration of follow--up: 150�/s2

Permissible roll and pitch angle: � 45�Heading signal output:

serial interface �HEADING SERIAL� *): 9600 baud20 ms

*) Raytheon Anschütz specefic



3.3.5 Environmental Conditions and Other RequirementsAmbient temperature during operation: --10 �C to +55 �CStorage temperature: *) --25 �C to +70 �CEMC: see Declaration of ConformityOther Requirements: Acc. to ISO 8728 Shipbuilding

Marine gyro compassesAcc. to IMO Performance Standards forgyro compasses, Resolution A.424(X1)

Type of enclosure: IP 23Maintenance interval: 3 years

*) without supporting liquid



AEdition: 02. July 1999 2771E/110--800.DOC032

Index

Aaccuracy, 3 -- 17

alignment error, 1 -- 13, 1 -- 15

amplifier, 3 -- 14

Bbellow, 3 -- 3

bridge circuit, 3 -- 14

brush group, 2 -- 29, 2 -- 31

buffer store, 3 -- 4

Ccalotte, 3 -- 12lower, 3 -- 4, 3 -- 6, 3 -- 12upper, 3 -- 4, 3 -- 6, 3 -- 12

capacitor, 3 -- 5

casing, 3 -- 8

collector ring board, 2 -- 29, 2--31

collector rings, 2 -- 31

compass zero, 1 -- 11

conductance, 1 -- 15

conducting paste, 2 -- 26

conductive band, 3 -- 14

conductivity, 3 -- 11sensor for, 3 -- 4p.

conductivity sensor, 2 -- 26, 2 -- 35

construction, 3 -- 1

converter, 3 -- 15

course pick--off, 3 -- 12

Ddamping body, 3 -- 3

damping system, 3 -- 10

digital display, 1 -- 19

dimensions, 3 -- 17

dipstick, 2 -- 5, 2 -- 7

directive force, 3 -- 9

dynamic error, 3 -- 17

Eelectrical data, 3 -- 17

encoder, 2 -- 18, 2 -- 32, 3 -- 2p., 3 -- 7p., 3 -- 13

encoder value, 1 -- 15

environmental conditions, 3 -- 18

equator band, 3 -- 6, 3 -- 12

error, 1 -- 16

error logbook, 1 -- 16, 1 -- 21

Ffan, 1 -- 19, 2 -- 17, 2 -- 28, 3 -- 2, 3 -- 8, 3 -- 14, 3 -- 16

filler, 1 -- 6p., 2 -- 12

filling device, 2 -- 13

filling in the liquids, 1 -- 6

float valve, 3 -- 4

flow control, 1 -- 17

follow--up, 2 -- 18, 3 -- 5, 3 -- 13p., 3 -- 16

follow--up system, 1 -- 10, 1 -- 18p.

function, temperature--dependent, 3 -- 16

Ggear, 3 -- 2

gearing, 2 -- 18

gyro, 3 -- 9

gyro current, 1 -- 14

gyro rotor, 3 -- 6, 3 -- 12

gyro sphere, 3 -- 9

gyro system, 3 -- 9p.

gyrosphere, 2 -- 11, 2 -- 18, 2 -- 24, 3 -- 1, 3 -- 4, 3 -- 6,3 -- 10pp.height of, 1 -- 14, 2 -- 18, 3 -- 12inserting the, 1 -- 5installation of the, 1 -- 3installing of, 1 -- 4running time, 1 -- 15


B Edition: 02. July 19992771E/110--800.DOC032

Hharmonic oscillator, 3 -- 15

heading indication, 1 -- 10

heat conducting paste, 2 -- 25

heating, 2 -- 17, 2 -- 19, 3 -- 4, 3 -- 13, 3 -- 16

heating cartridge, 2 -- 17, 2 -- 19, 2 -- 27, 3 -- 14

heating phase, 1 -- 10

Iinjector, 2 -- 11

installation, 1 -- 2

Jjoint, 2 -- 28, 3 -- 1pp.

LLED indication, 3 -- 2

liquid support, 3 -- 5

locking pins, 2 -- 14

luminous segments, 1 -- 19

Mmaintenance, 2 -- 2

maintenance schedule, 2 -- 2

measuring cone, 1 -- 6p., 2 -- 5p., 2 -- 12p., 2 -- 33, 3 -- 5

measuring gauge, 2 -- 32

Ooperating principle, 3 -- 9

operating states, 1 -- 10

operating temperature, 1 -- 10, 1 -- 19

operating time, 1 -- 15, 1 -- 21

outer sphere, 1 -- 3p., 1 -- 18, 1 -- 22, 2 -- 3pp., 2 -- 11,2 -- 14, 2 -- 27, 2 -- 33, 3 -- 1, 3 -- 3p., 3 -- 9, 3 -- 11,3 -- 14lower, 1 -- 5, 2 -- 11p., 2 -- 34p., 3 -- 4p.putting in the, 1 -- 8upper, 1 -- 5, 2 -- 11, 2 -- 34, 3 -- 4

outer sphere PCB, 2 -- 25p.

overtemperature fuse, 2 -- 25, 3 -- 5

Ppendulum joint, 1 -- 3, 3 -- 2p.

pick--off, 3 -- 14

pick--off voltage, 1 -- 22

potentiometer, 1 -- 17

power consumption, 3 -- 17

pump, 2 -- 18, 2 -- 33, 3 -- 4, 3 -- 11

pump current, 1 -- 14

pump rotor, 3 -- 5

putting into operation, 1 -- 1

Rr.o.t., output signal, 1 -- 22

r.o.t. value, 1 -- 14

rate of turn, 1 -- 14

reference course, 1 -- 10, 2 -- 22p.

reference course input, 1 -- 11

reference course value, 1 -- 12

register, clear, 1 -- 21

residual weight, 3 -- 11

reversing contact, 2 -- 26, 3 -- 4p., 3 -- 12, 3 -- 14

Ssafety regulations, 2 -- 1

scope of delivery, 1 -- 1

sensor electronics, 2 -- 18p., 2 -- 21p., 2 -- 28p., 2 -- 31,3 -- 1, 3 -- 7p., 3 -- 15

settle point error, 3 -- 17

settling curve, 3 -- 10

settling phase, 1 -- 19

settling time, 1 -- 10, 1 -- 15bridge over, 1 -- 20

shipboard repair, 2 -- 16

slip rings, 3 -- 8

slip--ring assembly, 3 -- 2

snap closures, 1 -- 8, 2 -- 14p.

spare parts catalogue, 2 -- 36

static error, 3 -- 17

step motor, 2 -- 18

stepping motor, 1 -- 19, 3 -- 8, 3 -- 13p.



CEdition: 02. July 1999 2771E/110--800.DOC032

suction cup, 1 -- 4, 2 -- 11p., 2 -- 24

supporting liquid, checking the level of, 2 -- 3

supporting liquid, 1 -- 6, 2 -- 2, 2 -- 10, 2 -- 13, 2 -- 35, 3 -- 1,3 -- 5, 3 -- 9, 3 -- 11level of, 2 -- 6temperature of, 1 -- 10, 1 -- 14, 1 -- 18

supporting plate, 2 -- 22, 2 -- 27, 2 -- 28pp., 3 -- 1p.

suspension, hydrostatic, dynamic, 3 -- 11

switching regulator, 3 -- 15

switching--on procedure, automatic, 1 -- 21

symmetrical transformer, 3 -- 12, 3 -- 14

Ttechnical data, 3 -- 17

temperature, controlling, 3 -- 14

temperature controller, 2 -- 17

temperature fuse, 3 -- 14, 3 -- 16

temperature PCB, 2 -- 19

temperature sensor, 2 -- 18p., 2 -- 26p., 3 -- 4p.

test, 1 -- 19

tools, 2 -- 11

toothed belt, 2 -- 18, 2 -- 29, 3 -- 2, 3 -- 14

toothed belt wheel, 3 -- 2

toothed disc, 2 -- 29

transportation support, 1 -- 3

trouble shooting, aids to, 2 -- 18

turn--on procedure, automatic, 1 -- 16

Wwarning, 1 -- 16, 2 -- 16p.

weight, 3 -- 17

Zzero position, 1 -- 13


D Edition: 10. Mar. 19982771E/110--800.DOC032

Notes:



2771E/110--800.DOC032Edition: 14. Nov. 1997 Annex I

Annex:

Drawings:Dimensional Drawing Type 110 -- 800, 110 -- 804: 110 D 222.HP005

Type 110 -- 806: 110 D 222.HP018Circuit Diagram

Compass, general: 110 D 222.HP009Sensor electronics: 110 C 222.HP008, Sheet 1 -- 4Outer Sphere PCB: 110 D 222.HP022

Configuration Sheet: 110 D 222.HP201


Annex II Edition: 14. Febr. 19972771E/110--800.DOC032

Documents

STD20 ServiceMan