gyro compass service manual

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R

2771E/110–800.DOC032 Edition: 14. Dec. 1999

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

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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 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


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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 with

energized electrical conductors. Applicable safety regulations

must be followed, such as VDE, VBG 4, OSHA 1919, and other

consensus safety standards.

Caution!

• Maintenance and repair must be performed by trained and

qualified personnel who are knowledgeable in equipment

safety requirements!

• Device may be damaged!

Exchange of spare parts only with the supply voltage swit-

ched off.

• When the gyro compass is switched off, the rotors come to a

standstill not 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 !

• Without built–in gyrosphere, the gyro compass equipment STANDARD 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. 1999102771E/110–800.DOC032

ATTENTIONObserve Precautions

for Handling

Electrostatic

Sensitive Devices

CAUTION

Handling of Electrostatic–sensitive Semiconductor Devices

Certain semiconductor devices used in the equipment are liable to damage due to static voltage. Observe

the following precautions when handling these devices in their unterminated state, or sub–units containing

these devices:

1) Persons removing sub–units from an equipment using these devices must be earthed by a

wrist 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 tips

and 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 Delivery

Standard 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 installed

in an optional position and easily accessible for servicing work. (Installation of the

Gyro Compass STANDARD 20 see Drawing No. 110 D 222 HP005)

For reasons of safety, do not yet establish the cable connection to the distributor

COMPACT 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 sphere

Bottles 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 Gyrosphere

Required special tool: Suction cup

Procedure:

– Loosen the six screws that connect the upper outer sphere with the lower outer

sphere (see Fig. 1–3).

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

Loosen6 screws

Pins

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

– Remove the upper outer sphere taking into account the cable loom from the

lower outer sphere to the small PCB (see Fig. 1–4).

– Lift the gyrosphere out of the transportation box and – by making use of the

suction cup – insert it carefully into the lower hemisphere (see Fig. 1–4).

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



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Pay attention to the gasket of between the two outer

spheres (see Fig. 1–4)!

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

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

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 points

a) 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 first

filling–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 closures

of 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 outer

sphere and fasten the plug to the small PCB of the outer sphere; tighten safety

screws.

– 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 the

24 V power supply.



1.7 Display Indications after Switching–on of Gyro Compass Equipment STANDARD 20

The following operating states of the gyro compass will be signalized:

(See also Signalling of the Operating States on the Steering Repeater Compass or on the

Operator 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 follow–up system by the sen-sor 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 yet be used; it must still be corrected by entering the reference course! (see following Section 1.8)




1.8 Compass Zero Adjustment (Reference Course Input)

After installation of the gyro compass, adaptation to the mounting site is required. Compass

zero adjustment takes place via switch B11 and push–button B14 on the sensor electronics

PCB.

1.8.1 Procedure

Prerequisite:

– 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 value

Position 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 course

change 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 the

gyro 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 into

the 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 required

to 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 to

ground strap.


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1.9 Readout of the Gyro Compass Data

Certain 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!no appears with height of gyrosphere < 0.8 mm

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



1 – 15Edition: 14. July 1997 2771E/110–800.DOC032

Anzeigen Bemerkungen,Hinweise

Step 4Conductance of the supporting liquid with op-erating temperature in µS / cm.Desires value: 390 µS / cm ... 790 µS / 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 either or .

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: 05. Mar. 1999 2771E/110–800.DOC032

1.10 Checking and Adjusting the Height of Gyrosphere

For 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 = 420 ... 430 µS/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 the required direction until the indication HYES 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 Follow–up System of the Gyro Compass

The follow–up system will automatically be switched on only from a supporting liquid tem-

perature of ≥45 °C.

For servicing purposes (e. g. correct follow–up of course indications on the repeater com-

passes), the 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 to OFF = follow–up system OFF.


With the follow–up system switched off, the digital display nowindicates the last course value with an illuminated point addedto the last decimal digit.

The outer sphere can now manually be turned into any position, the digital display always

indicating the corresponding angular value.

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


The digital display now indicates the supporting liquid tempera-ture for a short time (during 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 stepping motor (fol-

low–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 follow–up

system switches on. The stepping motor turns the outer sphere to the instantaneous course value of the gyro–sphere.With t > 45 °C, the follow–up system has already switched on; therefore, it is not necessary for the stepping motor to turn the outer sphere to the instantaneous course value.

After test:

– Switch B11 / F to position ON


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1.13 Settling Time Bridge–over

For 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 position OFF

– 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 Register

The 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 to position 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 to position OFF


Step 11 – By means of key B14, reset the hole values to 0.

In the same way, the stored operating time (Step 10) and the stored sum of all automatic

switching–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 Signal

The R.o.T. output signal is set to polarity positive (+) for Raytheon Anschütz devices when

the ship is turning to port. For devices with polarity ’–’ to port, the sign of the output signal can

be changed as follows:

A B C D

OPEN

E F G H

OFF

ON

– Set switch B11 / B to position OFF


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 Voltage 1)

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 and

gyrosphere of approx. 0.04°, the outer sphere is caused to follow up the gyrosphere. This

value must not be exceeded.

A B C D

OPEN

E F G H

OFF

ON

– Set switches B11 / F and H 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 care during maintenance and repair to avoid contact

with energized electrical conductors. Applicable safety

regulations must be followed, such as VDE, VBG 4,

OSHA 1919, and other consensus safety standards.

Caution!

Maintenance and repair must be performed by trained

and qualified personnel who are knowledgeable in

equipment safety requirements!

Device may be damaged!

Exchange of spare parts only with the supply voltage

switched off.

To avoid damaging the cross–slotted screws during assembly

and 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 Cross Reference

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 Follow–up System of the Gyro Compass (see Fig. 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 to OFF = follow–up system off.

The outer sphere can now manually 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) and release 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!

Caution!




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

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

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, distilled water 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’ isreached (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).


– Carefully turn the outer sphere through 90° and repeat the same procedure 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 to ON = follow–up system on.



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) and release they by pressing with your thumbs.

– Carefully turn the outer sphere 90° and repeat the same procedure with the other quick 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 releasing

the locking device) and carefully remove it from the compass casing and put it on the

three fixed pins (refer to Fig. 2–6).

Caution!


Loosen6 screws

Pins

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

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 Sphere

Special 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)

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

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 screw

c) Screw the red screw back into position, observing the sealing

d) Remove the filling device from the empty bottle of distilled water and place it onto the

bottle 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 the

measuring cone shows the following:

This view is seen only to beginning of operation (after first

filling–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 of

disposal are not necessary).

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

h) 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 closures

of 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


– 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 sphere

and 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 on

the 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 read

through 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 the

warnings 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 Shooting

After an error has occurred, the course information is switched off. The gyro compass then

makes up to 4 re–starting attempts. After having made a 4th fruitless attempt, the gyro compass

remains switched off. The number of starting attempts as well as the last occurred error are

stored and can be visualized on the digital display by calling up the compass data (Section 1.9).

Code of Error

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 Follow–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

6.1 Cabling out of order

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 of Error

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

9.1 Cabling out of order

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 to

a standstill not 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 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 voltage

switched 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

– Place a middle–sized screwdriver (max. 5 mm diameter) into the blind hole of the supporting

plate (refer to Fig. 2–13) from below through the hole in the sensor electronics and use it as

lever to pull out the sensor electronics carefully.

Sensor elec–tronics PCB

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

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 new

value 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 the

compass, is still not stored on the new PCB. Otherwise, the

course 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 course

During the first putting into operation, the gyro compass has been adapted to the

mounting site. The difference value (alignment error) from this is noted inside of the

door. With this value the new reference course has to be calculated and entered

again.

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 difference

valueRead–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 Gyrosphere

Perform 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 compasses with built–in coarse synchro, the synchro zero point must also be checked

and possibly corrected acc. to section 2 ’Zeroing of synchro and sin/cos potentiometer’ in the

appendix of the service manual.




2.3.5.3 Temperature Sensor and Overtemperature Fuse

Perform 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

The PCB carries the temperature sensor N1 and the overtemperature fuse E1 (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)

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

Reversingcontact W1

Reversingcontact W2

Conductivitysensor RK

Plug contact,lower calotteUK

UK 2 1 3 RK W1 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 or

temperature sensor, resp., and to the corresponding

holes in the outer sphere.

– Putting in the Outer Sphere acc. to Section 2.2.3.5




2.3.5.4 Heating Cartridge


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) with

the 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 a

way that the plug contacts B2 and B3 can be plugged

on again.

– Screw in the four screws again; the longer one for the cable support


2.3.5.5 Fan


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





2.3.5.6 Brush Group and Collector Ring Board

Carry 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

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

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 the

flange radially and then tighten the screws. This ensures that the

brushes 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 the

factory. Please do not touch!

– When inserting the new collector ring board, only screw in the 6 screws but do not tighten

them. First insert the sensor electronics and then tighten the 6 screws.

The sensor electronics serves here as an installation aid for

correct 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 inserted

again.

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.




2.3.4.6 Encoder

Carry 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 an

additional housing. The new encoder is assembled without

this 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 section

1.8, correcting it if necessary.







2.3.5 Pump

Carry 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.

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

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 the

conductivity 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 replacement

parts list)



2.4 Spare Parts Catalogue

The following replacement parts catalogue no is valid for the entire gyro

compass 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 Ordering

To 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 ship

2. Raytheon Anschütz order number:

e.g.: 610 0 61637

3. 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

12

3

4

5

6

7

89

10

70

71

12

1314

15

1718

16

64

22

24

25

2829

26

27

63

62

2120

2 – 38

30

31

3233

3534

3637

38

3940

41(44) 45 46 43

72

(44)

42

69

68

50 48

4947

65

67

52

51

53

66

54

55

56

5958

57

60

61

49

50

ErsatzteilkatalogSPARE PARTS

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

CATALOGUE

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 9912 EDITION 052 – 39

Pos. Lager-Nr.Stock-No.

Benennung Designation Zeichnungs-Nr.Part-No.

Stck.Qty.

Herst.-CodeMFRC

Versorgungs-Nr.NATO Stock-No.

BemerkungenREMARKS

1 1.607 173 Schraube SCREW M 4x12 ISO 7045A4Z 6 D 8286 5305-12-303-5334

2 1.620 841 Scheibe WASHER 4,3 DIN 433 A4 6 D 8286

3 3.600 089 Sensorkarte SENSOR PCB 110-222.101 E01 1 D 2865 5998-12-343-5816

4 1.604 831 Schraube SCREW M 6x20 ISO 7046-2 A4-Z 2 D 8286

5 3.608 498 Gelenk HINGE 110-222.11 1 D 2865 6605-12-343-6318

6 1.607 173 Schraube SCREW M 4x12 ISO 7045 A4-Z 4 D 8286 5305-12-303-5334

7 3.513 981 Scheibe WASHER 110-222.01-005 1 D 2865



10 1.504 729 Zahnscheibe z= 256 TOOTHED WHEEL z = 256 110-222.01-008 1 D 2865

11 wird in diesem Gerät nicht verwendet / not applicable in this unit

12 3.514 541 Flansch FLANGE 110-222.01-012 1 D 2865

13 1.607 174 Schraube SCREW M 4x16 ISO 7045 A4-Z 3 D 8286

14 3.601 361 Schleifringgruppe SLIP RING ASSEMBLY 110-222.X15 1 D 2865


16 3.601 361 Schleifringgruppe SLIP RING ASSEMBLY 110-222.X15 1 D 2865


18 1.620 743 Scheibe WASHER 3,2 DIN 433 X12 CR 6 D 8286




22 3.601 156 Elektr.-opt. Winkelgeber ENCODER 110-222.X13 1 D 2865


24 3.608 582 Lüfter, vollst. FAN, COMPL. 110-222.08 1 D 2865 4140-12-343-3674


26 1.670 338 Zahnriemen TOOTHED BELT 80315, 315 Z, 0,08" 1 C 2720 3030-12-343-5630

27 3.608 591 Schrittmotor, vollst. STEPPING MOTOR,COMPL.

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



30 1.796 040 Haltenocken CAM J 252 R13-3 4 D 0680

31 1.796 041 Mutter NUT J 252 R43-3 8 D 0680

32 1.504 709 Schraube (grün) SCREW (GEEN) 110-222.20-006 1 D 2865

33 1.793 964 O-Ring RUBBER GASKET 8x2 SHA 70 EPDM 1 D 7040

34 1.504 731 Schraube (rot) SCREW (RED) 110-222.20-004 1 D 2865


36 1.504 708 Schraube SCREW 110-222.20-005 1 D 2865


38 3.600 144 Obere Hüllkugel UPPER HEMISPHERE 110-222.X09 1 D 2865


40 1.620 830 Scheibe WASHER A 4,3 DIN 125 A4 6 D 8286 5310-12-158-2236

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

2 – 40

Pos. Versorgungs-Nr.NATO Stock-No.

BemerkungenREMARKS

Herst.-CodeMFRC

Stck.Qty.

Zeichnungs-Nr.Part-No.

DesignationBenennungLager-Nr.Stock-No.


42 3.608 966 Heizung, kompl. HEATER, COMPL. 110-222.X02 1 D 2865

431 3.608 757 Hüllkugel-PCB OUTER SPHERE PCB 110-222.22 1 D 2865 5998-12-343-5818

44 1.930 176 Wärmeleitpaste HEAT CONDUCTING PASTE

D 2865


46 1.620 706 Scheibe WASHER A 3,2 DIN 125 A4 2 D 8286

47 3.600 034 Lagerschale, kompl. LOWER HEMISPHERE 110-222.X06 1 D 2865

48 1.601 179 Schraube SCREW M 2x4 DIN 912 A4 2 D 8286

49 1.621 641 Fächerscheibe WASHER A2,2 DIN 6798 X12 CR 3 D 8286

50 1.721 499 Flachstecker FLAT PIN TERMINAL D 2,2 2,8-0,8 3 D 8286

51 3.500 651 Schlauch TUBE 110-222.20-012 (86 mm) 1 D 2865


53 3.608 916 Kalotte, unten CALOTTE, BELOW 110-222.96 1 D 2865



56 1.504 705 Scheibe DISK 110-222.20-007 1 D 2865

57 3.609 274 Pumpe, kompl. PUMP, COMPL. 110-222.X04 1 D 2865


59 1.620 830 Scheibe WASHER A 4,3 DIN 125 A4 6 D 8286 5310-12-158-2236

60 1.610 077 Mutter NUT M 2 ISO 4032 A4 1 D 8286


62 1.502 520 Schiene GUIDE NB 07-009.00-062 2 D 2865

63 3.608 897 Kabel CABLE NB 03-914-3M 1 D 2865


65 1.500 297 Tragflüssigkeit SUPPORTING LIQUID 148-162 1 D 2865 6810-12-160-1000

66 1.508 499 Destilliertes Wasser DISTILLED WATER 148-398 1 D 2865

67 1.507 674 Kappe FILLER PIPE 148-398.00-002 1 D 2865

68 Kreiselkugel GYROSPHERE 111-006 1 D 2865


70 1.796 039 Haltescheibe WASHER 15 S 11-1CJ 4 D 0680

71 1.796 038 Verschlußzapfen FASTENER 15 S 1-5-1AD 4 D 0680

72 1.762 141 Temperatursicherung TEMP. FUSE (TCO) 87400208508787°C/10A/220V AC

1 U 3832

Ersatzteile ohne Abbildung:Spare Parts without illustration:

3.608 939 Satz Dichtungen SET OF GASKETS 110-222.X01 D 2865 5330-12-343-3789

3.600 4762 Hüllkugel, kompl. OUTER SPHERE; COMPL. 110-222.X11 D 2865

1 Temperatursensor und Temperatursicherung einsetzen mit Pos. 44Temperature Sensor and TCO to be inserted with Pos. 44

2 incl. Pos. 65 and 66



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 and with a resolution of 212 pulses/revolution. The pendulum 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–up stepping motor to the outer sphere mounting is achieved via the pendulum joint. Dur-ing a fine step of the stepping motor 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 Joint

The pendulum joint that is directly flange–mounted on the encoder (Fig. 3–3) connects the

outer 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, the

bellows 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 Pump

The outer sphere (Fig. 3–4) consists of two assemblies that are connected to each other by

six screws.

3.1.3.1 Upper Outer Sphere Shell

The flow guide for the supporting liquid is in this assembly and – centrally arranged – the

conductive 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 distilled

water to supplement the amount of supporting liquid in the area of the outer sphere. The

amount 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 upper

outer sphere.

A transparent measuring cone serves for a visual check of the level of the supporting liquid

and the horizontal positioning of the gyrosphere.

A printed wiring board is mounted on the upper outer sphere shell; this board is connected

via plug and cable trunk with the slip rings. There is also a temperature sensor on the board

as 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 upper

outer sphere shell.

3.1.3.2 Lower Outer Sphere Shell

The 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 – required

for 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 upper

outer 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 Gyrosphere

The gyrosphere (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) and

hermetically sealed.

The gyrosphere is fitted with a conductive calotte at each pole – corresponding to the outer

sphere. At the equator, there is a semi–circular conductive band for pick–off of the heading

position.

RotorRotor

Upper calotte

Lower calotte

Equator band

Fig. 3–5: Gyrosphere – Sectional Drawing




3.1.5 Sensor Electronics

The printed wiring board with the sensor electronics (Fig. 3–6) is arranged as plug–in board

below 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 Casing

The cylindrical casing is provided with a door; when the door is removed, a cutout with an

angular 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 sealed

with rubber gaskets.

The casing floor contains the fastening bore–holes for board assembly as well as centrally

arranged 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 gyrosphere

and driven by AC produce, in conjunction with the combined effects of the earth’s rotation

and gravitation, a directive force which causes the gyrosphere to settle on the geographic

north–south line. Two mechanically coupled gyros with gyro vector axes at right angles to

each 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 the

earth’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 Outer

Sphere

(Refer to Fig. 3–9 and Fig. 3–11)

When the compass equipment is switched on, the pump for the supporting liquid functions

as well. 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 adjusted

exactly so that, with the gyro compass at operating temperature, the gyrosphere has a slight

residual weight. This residual weight is cancelled by the liquid steam produced by the pump

which thereby simultaneously centres the sphere. In this way, the gyrosphere floats freely in

the outer sphere.

A conductive tube is built into the fluid return line for the measurement of the conductivity of

the supporting liquid. An alternating voltage at this location is constantly fed to a controller

and 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 resistance measurements. The resulting values are processed

and evaluated in a controller.

3.2.3 Power Supply of the Gyrosphere


The gyro rotors require an AC supply of 55 V/400 Hz in order to achieve a speed of rotation of

approx. 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, supporting

liquid to the calottes of the gyrosphere. The third phase required for the rotors is formed in

the 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 contact signal, height, etc.)

Conductivity,temperatureetc.

Opto–encoderSignal processingHeating controlMicroprocessorInterfaceWatchdogDisplay

Serialinter–face

RS 422µP

Heatingcontrol

Watch–dog

circuit

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


At the equator of the sphere there is a conductive band; its ends are designed for pick–off of

the sphere position with regard to the outer sphere. The pick–off has been designed as

bridge 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 contacts W1 and W2 of the outer sphere and the ends of the conductive band on the

gyrosphere.

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 in

the 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 outer

sphere via a toothed belt until the transfer resistances are balanced. The position of the

outer sphere now once again corresponds with that of the gyrosphere.

The sensitivity of the follow–up system is within the limits of static exactitude. In this way, the

relation of the current heading to the azimuth is guaranteed.

The symmetrical transformer required for follow–up is on the printed wiring board of the sen-

sor electronics. A controller supplies digital control signals to integrated stepping motor

components. A stepping motor then makes follow–up the outer sphere to approx. 0.05° of

the gyrosphere by mechanical reduction.

The gyro compass STANDARD 20 transmits the heading signal via the serial interface

RS 422 HEADING SERIAL*) to the periphery.

3.2.5 Controlling the Temperature of the Outer Sphere Group

An electronic sensor measures the temperature of the supporting liquid. Its signal is pro-

cessed in a microcontroller. In case of under–temperature, this controller activates a heating

cartridge and in case of over–temperature, it switches on a fan. In case of prolonged heating

at 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-

quency AC voltage of 400 Hz via a quartz–controlled harmonic oscillator. Variable frequency

half 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 the

switching regulator) to the outside.



3.2.7 Temperature–dependent Functions

Operating 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 is

switched 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 is

switched on. If the temperature increases up to 65 °C, then a coded over–temperature warn-

ing is displayed on the heading indicator; this display changes to an over–temperature

alarm when 70 °C are reached. If the temperature continues to increase beyond this point

then 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 Compass

STANDARD 20



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

3.3 Technical Data

3.3.1 Dimensions

Type 110 – 800 see Dimensional Drawing 110 D 222.HP005

Type 110 – 806 see Dimensional Drawing 110 D 222.HP018

3.3.2 Weight

Sensor Type 110 – 800: approx. 16 kg

Sensor Type 110 – 806: approx. 12 kg

(gyro compass with gyrosphere and supporting liquid)

3.3.3 Electrical Data

Supply 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 Accuracies

Settle point error: ≤± 0.1° x secLat.

Static error: ≤± 0.1° x secLat., RMS

Dynamic error: ≤± 0.4° x secLat.

(periodic roll and pitch + horizontal acceleration)

(secLat. = 1/cos Latitude)

Settling time: 3 h

Rate of follow–up: 70°/sPermissible rate of turn: unlimited

Acceleration of follow–up: 150°/s2

Permissible roll and pitch angle: ± 45°Heading signal output:

serial interface “HEADING SERIAL” *): 9600 baud

20 ms

*) Raytheon Anschütz specefic



3.3.5 Environmental Conditions and Other Requirements

Ambient temperature during operation: –10 °C to +55 °CStorage temperature: *) –25 °C to +70 °CEMC: see Declaration of Conformity

Other Requirements: Acc. to ISO 8728 Shipbuilding

Marine gyro compasses

Acc. to IMO Performance Standards for

gyro compasses, Resolution A.424(X1)

Type of enclosure: IP 23

Maintenance 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 – 12

lower, 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.HP018

Circuit Diagram

Compass, general: 110 D 222.HP009

Sensor electronics: 110 C 222.HP008, Sheet 1 – 4

Outer Sphere PCB: 110 D 222.HP022

Configuration Sheet: 110 D 222.HP201


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

gyro compass service manual

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