i ( Instruction CMZ500 Manual Gyro Compass (Type 2) IM BOBIOMO7E ——_—{&XXXXX=__—E 5th Edition Yokogawa Denshikiki Co, LidCONTENTS A Brief Word Before Use... . Important Cautions»... SUMMARY. 2... Operation Panel Components and Functions Handling 121 L22 Starting Summary ‘Tips on Usage , Precautions... . Starting the Gyro Compass, Handling in Cold Districts , and Stopping, of Operations , OVERVIEW General Performance and Specifications . 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 HARDWARE Power Supply . Input Signal . Output Signal . . Settling Time and accuracy . Environmental Specifications (normal operating conditions) ome External Input/output Signal Specifications System Configuration .). . Models Component Names and Functions . OPERATION. 2... Starting 4.L. 4.1.2 4.13 and Stopping Starting... Start-up Indication (stand-by indication/normal indication) Stopping . PAGE, +16 +a ee 26 ‘IM 80B10M07EPAGE 4.2 Operation Panel Functions and Operations... 2... - 4-3 4.3 Operation. OS 4.3.1 Basic Operation. 6. ee ee ee HS 4.3.2 Command Code List... 2... 2. 46 4.3.3. Numeric Value Setting... ....- 47 4.4 Display Function. 66 eee ee ee 49 4.4.1 Displaying Gyro Data. 2... ee ee a8 4.4.2 Displaying External Azimuth Data... . 1... +. 410 4.4.3 Displaying the Rate of Turn»... ee ee aed 4.4.4 Displaying the Running Time... ee ee ee ADL 4.4.5 Displaying the Dimmer Level... 2). e+ eee ee felt 4.4.6 Displaying The Gyrosphere Phase Current etc. . . . . . 4-12 ~ 4.4.7. Displaying the Software Version Numbers . . . 4-12 45 seesoritinetias ss 2 5s ip eesmmuin is ss + + + 428 4.5.1 Heading output Selection. 2...) ee ee #1 4.5.2 Automatic Aligning of the Master-conpaes Card Reading 4-14 4.5.3. Manual Aligning of the Master-compass Card Reading . . 4-15 4.5.4 Manual Aligning of the Repeater Compass Card Reading . 4-16 4.5.5 Manual Setting of the Speed-error Correction Value . . 4-16 4.8.6 Restart Timer Setting... . 22... +--+. 4. M17 5 MBINTENANCE © ee ee SL 5.1 Daily Inspection... eee ee SL 5.2 Periodic Maintenance... 2-2-2 ee ee ee SD 5.3 Troubleshooting... ee ee ee ee SD 5.3.1 Confirming The Error Codes... eee ve ee SR 5.3.2 Error Code Data and Remedies... 1.1... 1s + Sd 5.3.3 If No-voltage Alarm Occurs... 6.1 see eee + ST 5.3.4 If Off-Set Error Occurs... 2-2-2 58 5.3.5 If One-way Turning Occurs... +11 ee eee ee S19 5.3.6 Tf Follow-up Error Occurs... eee eee ee SRL 6) ARBIAMIATION wee ee ee Bb 6.1 Installation Notes 6. ee BL 6.1.1 Vibration Resistance... . eee ee ee ee ee OD 6.1.2 Parallel Alignment of Lubber Lines... 2... 1. 6-1 6.1.3 Service Areas. ee ee ee GL 6.1.4 NoMegger Test... ee ee eB > Im BOBLOMOTEiis pace 6.2 Overhaul and Assembly ee 62 6.2.1 Precautions on Overhaul |...) ll, ed 6.2.2 Installing the Gyrosphere |... eo 6.2.3 Replacing the Repeater Compass Lams... es. 6-9 6.2.4 Aligning the Repeater Compass Card Reading || |... 6-9 6.2.5 Supporting Liuid ee lO 6.3 Selection of System Operation (Dip-switch Setting)... .. . 6-11 6.4 Maintenance command Codes... ee ee 6B 6.4.1 Simulated DAC Output ee ee Ol 6.4.2 One-way Turning of the Master Compass... . 6-15 6.4.3 One-way Turning of the Repeater Compass |) |), Sl6 6.4.4 Running Time Resets ee ee ee ey O17 6.4.8 Displaying the Follow-up Control Parameters... 6-18 6.4.6 Initialization of Backup Memory... 2.1), 6-18 6.4.7 Installation-Srror Compensation for the Master Compass 6-20 6.4.8 Setting the Master Compass Follow-up Gain... .. . 6-22 6.5 I/O Signal Format Generation... eee ee ee 28 6.5.1 Configuration and Connections... ee ee es 623 6.5.2 Signal Format Generation... . ces 624 6.5.3 Initial Setting for Serial Output Signal Format... 6-28 Appendix 1 Speed Error and Speed Error Calibration Chart»... . 1el Appendix 2 Operating Principle». 2... ee. ad 2.1 Gyo... pid ommmlens a 2 2.2 North-seeking Tendency of Gyrocempass se. . 202 2.3 Gyrocompass Error... ee BM Appendix 3 Runction Block Diagram. ss) Appendix 4 Wiring Diagrams... ee ee ed 4.1 Master Compass Wiring Diagram... ded 4.2 Control Box Wiring Diagram... ee ees oe? 4,3, Block Diagram for Control BOK... eee #3 4.4 Interface Circuit Diagram (Vel.1, Yol.2) 2. . ded 4.5. Control Box/Master Compass Wiring Diagran... . 4-6 4.6 Repeater Conpass Wiring Diagran. 2...) |) 4-7 Appendix 5 Component List... . . rst Appendix 6 certificate for Installation Adjust Completion...) 6-1 1M 80B10M07E@ A Brief Word Before Use ‘Thank you very much for purchasing our CMZ500 gyro compass, ‘This instruction manual describes the functions of the CMZ600 gyro compass and the procedure for handling the instrument. Before use, please read this manual carefully to handle the instrument properly. @ Notice +The information contained in this manual is subject to change without prior notice for Increased performance of the instrument or other reasons, + Every offort has been made to ensure accuracy in the preparation of this manual. However, should any errors come to your attention or any question arise, please contact the Yokogawa head office or your nearest Yokogawa branch or sales office found on the back cover of this manual. + Under absolutely no circumstances may the contents of this manual be transcribed or copied {in part or in whole without permission, @ Revision Record + First edition : June, 1994 + 8rd_ edition March, 1996 *4th edition April, 1998. + 5th edition —: September, 1999 IM BOB1OMOTEImportant Cautions ‘The following symbols concerning safety are found on the product and in this manual: DANGER : This cautionary symbol indicates that a failure to cbserve the given instructions may result in serious endangerment to the life of personnel. WARNING : This cautionary eymbol indicates that a failure to observe the given instructions ‘may result in personal injury or endangerment to the life of personnel CAUTION : This cautionary symbol indicates that a failure to observe the given instructions ‘may result in personal injury or damage to the instrument. A, DANGER $% RISK OF MERCURY + Do not allow the mercury used with this instrument to come Into contact with skin. If any incidental contact with the meroury occurs, wash It off immediately. + Should the meroury accldentally spill, draw it off with a syringe or the like and keep it ina glass bottle. 4\ WARNING 4s RISK OF ELECTRIC SHOCK + Turn off the power supply before starting the wiring. A CAUTION WINo megger test excopt the on-board power supply terminals. The megger test may damage the instrument. Precautions in handling the gyrosphere: “Hold the gyrosphere firmly with both hands during operation. Do not allow any severe Impact on the gyrosphore. Do not drop the gyrosphere. A failure to observe this instruction may result in damage to the internal mechanism or personal injury. + Do not disassemble the gyrosphere. |W Procautions in handling the container: ‘« Hold the container firmly with both hands during handling to avoid dropping it. + Accidental dropping of the container may result in damage to the intarnal mechanism or personal injury. Prohibition on polishing the slip ring: + Do not polish the slip ring. When cleaning the ring, wipe off dirt using ethyl alcohol or ligroin. IM 80BL0MO7E:1-2 1. SUMMARY Chapter 1 describes the minimum information necessary for operating the M2500 gyrocompass. For further details, refer to subsequent chapters. a (2) (3) (4) (3) aa Operation Panel Components and Puntions Handling Precautions Starting and Stopping Summary of Operations ‘Tips on Usage (typical operations and relevant subsections in this manual) Operation Panel Components and Functions 2D 0 @ Fane ran] Psat No Wout © }—_-® © iG@GHEAAA cfs ] ExT GRO ® EO — E t umn v j[e ® IM BOBLOMOTE, We, Component Rane Racca Tem See T [Poser saece | Shig seit carne he poms co tie gyro syaten on or of ible the potas LEB ianp' cb fe on | owe te ‘ole TBD Lights when che sain paws awitch Sn the gyre & otegh bor le cient onside he pons te supple fon 3 | Selece avaece | Frese che auton co be able co tara off the pour By oe ‘power suisen oe to eeubie serious secting socravicn ous a8 Enmang soir i0" 20°29. (odes 125 0 25) can’ be ereated, S| Dimer swdtch | The dimer snitch controls che 1ilumnstion, Intensity for SiS SSchaSes che Senet panels te bothoektces ase © | susser ste | press. as euiten wo atop She buster sound and oe alam ~ moieer Titp tron tllotering. Tail alam lanp_| This lamp fe flicterina if ay error eozurs in the OPO, oF me | Coesation of conteel arse; ‘gsvors in the epecstion of ‘Sourol unte can be adertitied using the comand sode "26" 1] | Goowlvage alam | Ghig lanp is Flickering If ohe RE pews supply frm che ship | OF top fils Siepiay “ = 10 | iperte wey Tineric Weve are used co lange Gata teens on the Guoplay = masen fnter data for settings. Tr | Sensor select | Seis indicaces tha corrertly-selected erigath sensors Taw | TIA" Ss on inateatoe enaor” can be changed sing’ omane oa © 20." s *1: It ds recommended that this LED be turned off during normal operation to avoid accidental mistakes. #2: The usua} display is a latitude or a speed which is displayed using 2 command code '00" 43: Select "GYRO" as the azimuth sensor during normal operation. IM 80B1OMOTE1-5 1.2 Handling Precautions 1.2.1 Starting the Gyro Compass (1) Turn on the gyro compass at least five hours before departure from port, (2) Do not touch the internal unit of the master compass after the start of operation to avoid possible instrument breakdown or errors. 1.2.2 Handling in Cold Districts ‘The container of the master compass holds the gyrosphere and supporting liquld. When bringing the gyro compass to a stop in an area at temperatures below —3°C, follow the instructions below: (1) If the period of stopping ie no longer than a few days: Wrap the master compass with a blanket or other heat insulators to keep it warm. (2) If the period of stopping is longer than a few days: Drain the supporting liquid completely. 4 CAUTION M Prohibition on polishing the slip ring: *Do not polish the slip ring. When cleaning the ring, wipe off dirt using ethyl alcohol or ligrotn. IM 80B10MOTE13 Starting and Stopping (2) Starting the Gyrocompass System Turn on the ship's AC supplies to the gyro system. and DC power + the gyro control box. Turn on the main power switch in . The ® ower LED comes on lamp on the operation panel over 2 seconds. ‘Turn on the power switch on the ‘operation panel by keeping it down - While the power switch is kept down, The gyroroter is not | rotating fast enough. (Phase current: more than 0.35A. Refer to Subsection 4.1.1. In this manual.) a buzzer sounds. Then, the gyro system starts. + The gyrorotor is rotating fast enough (Phase current: 0.85 A or less. Refor to Subeoction 4.1.1 in this cold start + General-purpose —t Hot start + ‘The gyro system enters into display ALS normal stato immediately. 4 . The master and repeater compasses remain stopped. ; Aligning operation is prohibited. « When the phase current falls to 0.35 A or less and its rate of change Gzops below a specizied level, ‘the gyro system enters into normal state. Normal state th sopioMo7E + General-purpose display {no mal display) Normal state@) Stopping the Gyrocompass system Press the select operation panel. switch on the seconds. Turn off the operation panel power switch by keeping it down over 2 + The select LED comes on, indicating that the power can be turned off using the power switch. « The gyro system stops. + If the gyzo system is going to be stopped for only a short time without maintenance, no further operation is yequired. "fo start the systen again, follow the start-up flowchart, beginning at point , Turn off the main power switch in the gyro control box. + The power LED lamp on the operation panel goes out. + The main power switch mist be turned off if the systen is going to be stopped for @ leng time or stopped for maintenance, To restart the system in this case, begin at point in the start-up flowchart. Stopped IN BOBLOMO7E,14 Summary of Operations (2) Command Code Table In the CMZ500, various functions are assigned to predetermined numbers (command codes) as shown in the table below. Conmand Code Table Glassifi-cat- ] code Function Page De _| Bieplay of atartup node and conpace Heading ay 30 | display of ayro cata is conpass heading, repeater heading, et. Ta | Sieplay of external azimth date ‘external azimuth and deviation from true heading 12 | Sisplay of save of torn mL —s ‘sn deg/see 73 | Sisplay of ronning tine al gyrosphere running hours 14 | Sisplay of diner level ran 73] Bisplay of Phase Current for Oyrosphere ete: ery Ts] display of softuore version numbere 2 20 | Belection of arimry omar ue 23_| aatonatie aligning of the master corpasy card reading ote 24 | vanuai aligning of the master compass card reading ws ae 25 | vanual aligning of the repeater conpasa card veading 16 26 | Blaplay of control unit error information/reset operation | Se 20 | Setting of spced-error conection value rEg 29 _| Scarce timer wetting 7 32 _| Simulated DAC output ei 32 | Gne-way turing of the master compass (manual @rive) 33 | cne-way Cursing of the repeater compass (manual drive) 34_| Fosotting of the qyrosphere running Hime asenaat 35] Dlaplay of followup control parameters ei8 36 | initialization of backup memory es 37 | Setting of the installation-erroe compensation value for | gag the master compass Ba_| Getting of waster compass followup gain rr IM 80B10MOTE(2) Operation Procedures Display Functions (s) teeta gree dia nar ko anstsn CETTE TET) pes ge, ST 2 TET] eps cncse cans cece “2 Feiation tron tevenaading = cove heading - etecnadacimeh (9) Baparog tin seteg ne (ets te sbecien Es Ty corr xggpece mnton ete! se eythane suing rare matte ces to tere wea ‘Stntnd cde Stn the qyrenpnce in ropacea IM BOBLOMO7E,e_saniog i ne eve stern nein (2) livia tsa ure nar te nston ale TTF) oige ev ete) blames Love + 60 ott) U2 31 nasi BEES, ial gen vee IM 80B10MO7Ero a <2> Setting Functions ne efT-E Tse) [ago GER CLUPRET) CerPrnro IM B0B10MO7E,Peers ithaca raencras IM 80B10MO7E,=a ent = stand-by x1Oolo = = x]o}o wt 2 x]o}o soe O}o]}o e xo] o arn x lol x IM BOBLOMO7E,1.5 Tips on Usage What should you do in the following situations? wm (2) 3 ct) 6) If there seems to be an error in the heading of the ship which is indicated by a repeater compass or an auto-pilot > Check the speed-error correction value. If an abnormal sound occurs in the master compass: ~ Check for an error in the master and repeater compass readings. If there is no error, the master compass can be used as is for the time being. <2> If there is an error, switch the azimuth sensor to "EXT" (exter- nal sensor), using command code 20 (see Subsection 4.5.1 in this manual) . Note: In either case, replace the gyrosphere as soon as possible. If you want to know the gyrosphere running time: = Use conmand code 13 to display the gyrosohere running time. The gyzosphere running time mast be reset to zero when the gyrosphere is replaced (See Subsection 4.4.4 in this manual). If you want to know the level of the phase current for the gyrosphere: = Use conmand code 15 to display the phase current value (see Subsec- tion 4.4.6 in this manual). If you want to set the timer for automatic restarting: = Use conmand code 29 to set the timer (see Subsection 4.5.6 in this manual) . Tf you want to reset the gyrosphere running time: = Use command code 34 to reset the gyrosphere running time (see Subsection 6.4.4 in this manual). TM 80B10MO7E2. OVERVIEW 2.1. General The CMZS00 is a highly reliable, accurate gyrocompass, featuring a compact, jight-weight, low-power-consumption design. ‘The CM2500 fully complies with the gyroconpass performance standard IMO recommended A.424(KT) as well es J1S-F9602, class A standard. (1) igh accuracy ‘The twin gyro rotors, in the gyrosphere, rotate at high speed, and are interconnected to compensate the errors caused by rolling and pitching of the ship, thus ensuring excellent accuracy, (2) Ingenious damping mechanism for vibration and shock ‘The container of the gyrosphere is filled with supporting liquid. and the container is supported by unti-vibration mechanism which is composed of rubber damping diaphragm and air damping chamber. These arrangement works successfully to absorb vibration and shock of the bull (3) Enhanced follow-up performance A velocity-control digital servo system enhances follow-up performance (maximam follow-up speed: 12 * /s), ‘The mechanism for detecting azimuth deviations automatically optimizes the follow-up control gain to match the electrical characteristics of the supporting liquid. (4) Basy speed error correction The speed error can automatically be corrected by entering a correc- tion value manually. (5) Variety of outputs 1 Synchro, stepper, NMEAOI63 digital, and analog (0Vto5v) outputs are available as standard to meet a wide range of needs. (6) onboard battery drive The cM2500 can be driven by an onboard 24V DC battery. (0) Remote operation The optional remote unit allows the gyrocompass system to be remotely controlled. This feature is suitable for one-man bridge console. 1M 80B10M07E(8) Built-in restart timer ‘The gyrocompass system can be restarted automatically after a speci- fied duration (1 hours to 99 hours). (9) Heading output from external sensor Heading signals from an external azimuth sensor (e.g., magnet compass or GPS) can be used to drive repeater compasses or other externally connected devices. . TM BOB10MO7E2.2 Performance and Specifications 2.2.1 Power Supply Main power supply : 100/110/115/220 V AC 4108, 50/602 458, 1 @ (Option: The main power can be backed up by 24 V DC onboard battery.) Power consumption (Start-up) Approx. 110 vA (Operating) Approx. 90 VA + 10 VA x number of repeater compasses (DC24V Drive Option) Start-up Approx. 3.6A Operating Approx. 2.02 + 10VA x number of vepeater compasses Alarm power supply : 24 V DC, 0.5 A 2.2.2 Input signal (2) Heading signal : NMEA-0183 (for backing up the gyro) (2) Alarm buzzer stop contact 2.2.3, output signal (1) Repeater compass signal (360X synchro DC drive) 1 9 circuits Pevices to be connected : Repeater compass, autopilot, course re- corder, radar, radio direction finder, ARPA, etc. (2) Stepper signal (35 v Dc, 3-bit gray code, 1/6 degrees) : 9 circuits (max. 1A ) Devices to be connected NNSS, INMARSAT, ARPA, etc. (when receiving devices are not terque-driven) IM 80B10M07E(3) Digital heading/rate-of-turn signal (NMEROI83 specifications) : 3 circuits Devices to be connected lot, digital repeater, ete, (4) Analog heading and quadrant signals (0 V DC to 5 V BC} 1 circuit each Devices to be connected : Course recorder and analyzer/measuring equipment (8) Analog rate-of-turn signal (0 V DC to 5 V DC, -32° /min to 32° /min) 1 3 circuits (6) Contact Output Gyro running Normally open, voltage-free contact signal, 1 cir- cuit Normally closed, voltage-free contact signal, 1 circuit No voltage Normally open, voltage-free contact signal, 1 cir- cuit Normally closed, voltage-free contact signal, 1 circuit Gyro failure + Normally open, voltage-free contact signal, 1 ciz~ cuit Normally closed, voltage-free contact signal, 1 circuit 2.2.4 Settling Time and Accuracy Settling time : Up to 6 hours (Operational accuracy condition is reached after approximately 2 hours.) Accuracy Within £0.25° 1 cos@ (in settled state) (o: Latitude of that location) Follow-up accuracy 1 0.1° oF less Maximum follow-up speed : 12° /s IM 80B10M07E2-5 2.2.5 Environmental Specifications (normal operating conditions} Roll and pitch Vibration Ambient operating £45 ° (rolling) ana +35 * (pitching) Siz to oiz... Up to 1.5 mm, p-p 8Hz to 25Hz... Up to 0.35 mm, pep 25Hz to Solz... Up to 0.1m, p-p temperature : -10T to +500 TM 80B10NO7E,2.2.6 External Input/outgut Signal Specifications Signal wane apbreviae Specifications Stepper otpot REF, COM, oH = Ov (circuit GHD) 581, 982, REF output : +38 ¥ DC 3208 383 REF output max. 2 1A- (However, up £0 1.5.2 ourput \gg permissibie depending on the number of fepeater compasses connected. under of repeater output conpasses comectes | capacity 3 é ’ > om 5 a $ Signal ovtpot ; 3-bit grey’ code specifications (551 to S531 open eodtector output Bach source corrent mmx, # 0.6% Tralog beading? | #06, @0D, Woe + Heading output suadrant extput | cow uD: quadrant outpoe Con: OY (chrcuit GXD) output voltage: 0 VDE to +5. V 0c Spat Heading ovteot gy ov Bas ay ssn su Output resolution : 2.5 mV ourpue impedence max, + 20 Recomended input min. : Sook impedance of connected devices oucput accuracy : 218 (at 250) IM BOBLOMOTE,Brana Wane Wabrevi avon Specification Boalog vave-o-turn | fOr cor Ov teiveult eho) output con Output voltage + 0 VC to +5 v ne (092° ymin to 622° fein) +5Y 1 42.5 i 7 se ymin 2" min Steet P s o> eset Output resotution + 2.5 av Output impedance mux. + 2k Recommended input min. + s00k impedance of connected devices. Output accuracy + 418 (at 25%) Serial data in pat/eurpue Serial data ROIA, RDIB heading signals snput al Conforms to HMEAGIE3. (Can be generated together feca Aza, ROD with ehe output.) Pp Receiving circuit : Photo-coupler 49 used. oes RDA, RIA, Heading ond rate-of-turn signals “serial data spi, soa Conforms to NHEADI83. (Can be generated together output: with the input.) Teangnission circuit : briver euch ae 8-422 or RS"405 te so2a, S028 eed. 1 | S01 te s03 are sor signal grounding (circus oor soz So3a, soa 503 TH 80BL0MO7E,Signal Wane Contact output Gyro fat ccenc, ew Nic + Normality closed cre No + Normally open unc, wv (example) Between WC and c + ave GYRO FAIL, NO VOLT Normal... Closed Abnormal ...open akc, exo orno RURWENG Aunasng «.. closed cre Not running --- Open contact rating max. + 24¥ DC, 0.54 wsthetand voltage 300 v pc (between contact out put and other circuits] ‘Bosrer stop contact | BSP When @ borer is stopped Sopa Contact is closed. sw Contact rating man, Mingmue working current max. Input /eutpue for renote terminal Power supply | PW ‘output voltage + +aey bc te +50 VDE output. Pa output current mux. 1 0.3 A at +36 Serfai data ‘lectrie characterietics conform to WWEROIG]. input/output Receiving esreuit : Photo-coupler ‘Teangmission circuit : Driver such as RS-4228 or Input OA, RDB E185 Set lien, oe ‘Teanamigsion rate + 4900 bps Dorzer stop Bee 1 burzer can be stopped from either side contact in Inain/renote). put/output sw When a buzzer is stopped Contact $s closed. contact rating min, 1 24 De, 0,05 Minimum working curzent mae IM 80B10M07E3 HARDWARE 3.1 system Configuration voi cownes fants wants C—\ aa fe] - + pecsgcmcra|| B @ IM 80B10M07EStand-alone type RMOL4-1 RMOLA-2 RMOLA~3 [console type ——| L-autopilot type —~ Cyzgsphere 3.2, Models (Master compass |control box Gyroconpass —| ens00 Im BOBLOMOTE Repeater compass —Gland type Wall-mount type RC313-W | Fiush-nount type KC313-F [Distribution box—— Synchro output ‘TYPE-1 (Basic Type} KC313-@-O-1 [—nage2 wade Type display) porpe geaisa-o-2 Lqypg-3 High Grade Type (With a speed-error correcting function) RC313-W-O-3 J—TYPE-1 (Standard Type) KC313-E-O-1 ‘TYPE-2 Middle Type (General-purpose display) KC313-F-0-2 (_qype-3 High Grade Type (With a speed-error correcting function) AEE \resote unit Sei Re L_seepper output ae ———p-togszegtan stand Ssh Ear L |—ostsentalbesciat Cangaction tox | "BRSBER oe Lnuisiag neacket BSE Ping wpe lgessoatal stana KEOGBA-P wx2238 L |-tortzontet besctat: connection box | “Ria8ER esate Lqiiting bracket R2133.3. Component Names and Functions (1) Master Compass (101014) ‘The components of the master compass and their functions are summa- rized below. No. Nane run 1 [case Protects the internal unit. 2 | container enit Contains the syrosphere. 3 | Fotiowup sechanisn Provides a follow-up function by arena of a synchro rotor and gear meckanten. a | roe Pastens the followup necha 5 | runber isolator Absorbs vinration ang shock: 6 | sore Holds the followup mecnansem and the container unit together. 7 | wing Going the aie chasber a | noi Festons the rubber Leotator. 2 | screw tens the container, 10 | stopper For suspending the container an | ate cnamer Absorbs vibration. a2 | nore Fastene the container 22 | cover Covers the front side of the master compass. 1s | pixser Controts the Lilunination intensity of the conpass card, 15. | connector For a ayrosphere power supply and follow-up signa 16 | rep cover Protects the follow-up nechanten. 17 | screw Pastene the top cover, 18 | srackee (a) 19 | erscker (x) ® IM 80B10N075(2) control Box (KC313) ‘The components of the control box and their functions are summarized below. te tame a) 7 pene Contains the lateral wait (Hlush-Rowne GPR) Contains the internal unit (all-nount type) 2 | ro0k astene the font panel door 3 | Front pane Front door i 4 | pecking Prevents dripping s | main asserbiy noara | sotn contzo1 noara 6 | sniera cover iectromagnetic shieleing 1 | operation panei (xe- | nisplay and setting functione (2¥EE 2) ete ante) a | rate ase plate 2 | rerminat board or external connect ons 10 | setter Tor turning on oF off the main power supply 11 | taper 12 | ruse otgete the power epely clesute (@ A), 100780715 ¥ AC Protects the power supply cinoult (5 AY Betas inne 13 | rose Protects the power supply ctroult (2 8) 14 | rose Protects the pover supply ctroult (15 A) 15 | nosse tstver suppresses notee us | noise suite suppresses noise 17 | operation panel cover | rrotects the rear of the operation panel 18 | ceanstorner ror stepping dow the voltage at | terminal board 22 | oer astens the hinge 24 | av assembly ectities the pover 25 | nate nadtates avay heat 27 | gover supply unit Supplies power to dndivideal wnéts 20 | nenote tezninal a ror connecting renote unite ay 23 | voce stopper totde the door open 20 | clam asters the door stopper. a | tos Ground terminal th popLomo7eControl Box (Flush-Mount Type) } is + oman STO T LSS Control Box (Wall-Mount Type) A\ WARNING AN RISK OF RLECTRLG SHOCK ‘Turn off the power supply before starting the wiring. QQ CAUTION No moggor test oxcept the on-board power supply terminals, ‘The megger test may damage the instrument. Im BOBLOMO7E,(3) Operation Panel ‘The components of the control panel and their functions are summarized below (for details, refer to Section 4.2, "Operation Panel Functions and Operations"). ep a om) Celts) @ © © GEEE585) o SEeH. ec cn oe © We. Tare Wo. Nene i Power switch 7 Fail alarm lamp 2. | Power 120 8 | No-voltage alarm lamp Select switch 9 | General-purpose display 4 | select tap 20 | Numeric keypad 5 | pinmer suiten 11 | Heading sensor select indicator 6 | Buzzer stop switch Three types of control box operation panel are available. . TYPE 3: With automatic speed-error correcting function . TYPE 2 : With manual speed-error correcting function (applicable to remote units) Without a numeric display function (also applicable to remote units) TYPE 1 Im BOBL0MO7E,a-9 (4) Repeater Compass (KROOSA-G or -P) The components of the repeater compass and their functions are summa~ rized below, No. Nare’ Function i | Shadow pin mounting hole | For installing the shadow pin which measures the azimuth of a tazget. A 2 | card correction plug For correcting the azimuth indication of the repeater card 3. | Mounting hole (for a Allows the repeater compass to be at~ horizontal stand or tached to the gimbal ring on a horizon~ bracket} tal stand or bracket. 4 | Mounting hole (for a Allows the repeater compass to be at- tilting bracket) tached to a tilting bracket. 5 | connector For connection to a connection box (for ‘the KROOSA-P) 6 | cable Connects the repeater compass to a con- nection box (for the KRO5A-G) . IM 80BLOMO7E,(5) Connection Box (KNO04-G or -P) ‘The components of the connection box and their functions are surma- rized below. vo. [vane punction 1 [inner | controls the illunination intensity of the repeater compass card. 2 | clan For an input cable clamp 3 | clang For a repeater compass cable clamp 4 | connector | ror a repeater compass Ty BoB1oMo7E(6) Horizontal stand (Kx223A) ‘The components of the horizontal stand and their functions are summa~ rized below. No. Name Function 1 [cover 2. | support 3. | stana 4 | Base tine Allows the horizontal stand to be aligned with the bow-to-stern line of the ship. 5 | Repeater mounting | For installing a repeater compass (keeps the shaft repeater compass horizontal]. 6 | Gimbal ring Keeps the repeater compass horizontal. Im BOBLOMO7E3-10 m Horizontal Bracket (KX201A) The components of the horizontal bracket and their functions are sunnarized below. Mounting hole Yo. Nane Function 1 | Repeater For installing a repeater conpass (keeps the mounting shaft | repeater compass horizontal) . 2 | Gimbal bearing | Keeps the repeater’ compass horizontal. 3 | cimbal ring | Keeps the repeater compass horizontal. For mounting a horizontal bracket to the ship IM BOBLOMO7E(8) Tilting Bracket (KX213) ‘The components of the til: ing bracket and their functions are sunma- rized below. No. Nane Function 1 | Repeater mounting For installing a repeater compass and ad- bolt justing its tilting angle. 2 | am 3 | Atm fastening bolt For fastening an arm and adjusting its horizontal position 4 | Mounting hole For mounting a tilting bracket to the ship IM 80B10MO7E3-12 (9) Digital Repeater H8012-F oF -D) tme conponents of the digitel repeater and thelr functions are suma~ Hel bein We = Rumction Tp olentay Displays the azimuth or cate of earn 2 | unit indicator | mtcates the unit of azimuth (degree). 3 | Unit indicator Indicates the unit of rate of turn (de gree/nin)- + | ede setect notton | pressing this button selects either the azi- ‘tunioation intensity and the [[W] button ke aeczease Se. Tf both of thon are pressed imaltaneously, the lanp test. starts. 5 | terminal board Gland Fiuen-ecunt te (7) Desktop type (-0) IM 80B10M078,4. OPERATION 4.1. Starting and stopping 4.1.1. Starting ‘The gyrocompass should be started up at least 5 hours before use. Turn on the power switch in the control box, then press the other power switch 'BHR" on the operation panel. The gyrocompass system is activated either by a "hot start" or a "cold start" depending on the state of the gyrorotor. "Hot start" means that the gyrorotor is rotating fast enough to detect the azimuth inmediately after the power is turned on. If the gyrorotor is rotating too slowly to detect the azimuth or if the gyrorotor is stopped completely when the power is turned on, this is regarded as a "cold start." ‘The rotation of the gyrorotor can be checked by monitoring the level of the phase current. (for driving the gyrosphere) Q) Hot (or driving Hon an (2) cold Gor deteing ‘the syrosphere) 0. During stand-by state, it is not allowed to drive the repeater compass. start start Tine If the phase current is 0.35 A or less immediately after the power is turned on, it is considered that the system has been activat- ed by a hot start. The follow-up, input/output, display, and other functions will then start normally. If the phase current is more than 0.35 A inmediately after the pow ex is turned on, it is considered to be a cold start. The stand-by state continues until the phase current drops and the rate of change in the phase current drops below a specified level. Normal operation will start when these requirements are met. In addition, synchronotor for repeater compasses is not excited, therefore, a repeater while in can be rotated easily by hand. the stand-by state, Be careful not to touch a repeater The azimuth indication will settle after about 2 hours, and then become ready for use. IM 80B10M07E,4.1.2. Start-up Indication (stand-by indication/normal indication) when the power is turned on, either stand-by or normal indication appears on the operation panel (TYPE 3). If the system is activated by a cold start (stand-by state), the display shown in item (1) below appears. (1) Stand-by Indication Gb Sell} When the rotating speed of the gyrorotor is fast encugh, the system enters normal mode and the display changes to the following, (2) Normal Indication SEL IY Indicated compass heading. 4.1.3. stopping Press the power switch "PWR" on the operation panel. If the gyro systen is not going to be used for a long time or during maintenance, also turn off the power switch in the control box. IM 80B10MOTE4.2 Operation Panel Functions and Operations ‘The functions and operations of the operation panel are described in the table below. Component Name Function and Operation ‘TYPE-2.(KC313-0020) 1. Power switch [ pa ] This switch tums the power to the gyro system on or off while the power LED is on. When pressing this switch, keep it down over 2 seconds, buzzer sounds to confirm the opera~ tion. Power LED [J This LED lights when the main power switch in the gyro control box is turned on while the power is supplied from the ship. . Select switch SEL This switch is useful when remote units are connected. Press this switch to be able to turn off the power with the power switch or to enable various setting operation such as com= mand codes 20 to 29. “When pressing this suiitch, Keep it down over 2' seconds, buzzer Sounds’ to confirm the operation, When this LED lights, the power can be turned off or command codes’ (20 to 23) can be en= tered. Various display functions, however, ave still available even when the’ select LED is off. 3. Dinner switch DIMER IE] The dinmer switch controls the illumination intensity for all indicators on the operation panel. The intensity can be adjusted in 32 levels using the following switches: ‘| 4 | : Increases the illumination intensity. IL [[F] + becesasos the 11nuninatton incensity. If both switches are pressed simultaneously, the lamp test starts and a buzzer sounds. During the lanp test, all the indicators are turned on and off synchronously, 6. Buzzer stop switch [2] Press this switch to stop the buezer sound. This also stops an alarm lamp flickering and the lamp renains on. 7. Fail alarm lamp FAIL ‘This lanp is flickering if an error occurs in the C2U, operation panel, or control unit. Errors in the control unit can be identified using the conmand code "26." If another error occurs soon after one error has been detected, @ buzzer will sound and the fail lanp will Start flickering again. 8. No-voltage alarm Lamp NO VOLT This lane is flickering if the AC power supply from the ship fails. TM 80B10MO7E,Component Name Function and Operation ‘TYPE-2 (KC313-0020) 9. General-purpose display Various data are displayed on this 7-digit display. Generally, a guide message con- ing of a few letters appears at the beginning of the display, snd the remaining spaces are for data. 10, Nonerie Keyswitch tf) EIE) Tet Wuneric keys are used for changing data items on the display or entering data for settings. Ii, Sensor select indicator cyR0 EXT This indicates the currently-selected azi- muth sensor, as either of the followin "GYRO": Gyrocompass "Ext" : External sensor (such as Magnetcompass or GPS) The sensor can be changed using conmand code "20." _ [st ® © EEBEAEG) corey Sate mo ty soB10Mo7E4.3. Operation Various operations can be carried out using the general-purpose display and nuneric keys 4.3.1 Basic Operation tesssing the *" wey | es eer Welt for a comand | oo Conmand entry “39° Increases the numeric value Decreases the numeric value Moves the entry position right or left Command execution key. Change of display | Press the "-" or "=" key to change the a play. Operations have two modes. First, press the "Cc" key to enter command wait mode. In this mode, enter the conmand code (number) corresponding to the desired function, then press the "E" key. This transfers the mode to command execution and the entered command is executed. For details of conmand codes, refer to Subsection 4.3.2, "Command Code List. <1> Command wait mode Press the "C" key to return from command execution mode to conmand wait mode. The display in this mode is shown at the lm [= UW LI right. 1 <2> Command execution mode Command execution mode is established by entering a command code, then pressing the "BE" key during command wait node,” A sanple display for comand code "00" is leh | shown at the right. TM 80BLOMOTE4.3.2. Classifi- | coae Function Page sation 00 [Display of start-up mode and conpass heading | 5 10 [Display of gyro data ho 1 compass heading, repeater heading, etc. T1_| Display of external azimuth data external azimuth and deviation from true | 4-10 heading ; display i | Display of rate of turn ea ian 1 /s 13 | Display of running tine ua Gyrosphere running hours T4_| Display of dinner level ea is__ [Display of gyrosphere phase current ete. a2 19_| Display of software version numbers wae 20 | Selection of azimuth sensor a +: GYRO or EXT 23, | Aukonatic aligaing of the master conpass card | gy reading 24 [anual aligning of the waster compass cara | gals Teading Setting 25 | Manual aligning of the repeater compass card |, Teading #16 26 | Bisclay of control unit error information = Treset operation 28__[ Setting of speed-error correction value #16 25__| Start-up tiner setting ea 31_| Simulated pAC output «18 32 | Qae-way turning of the master conpass (anual | Gay rive) 35 | One-way turning of the repeater Conpass = ‘manual drive) sas Maintenance [34 | Resetting of the gyrosphere running tine ea 35_ | Display of follow-up control paraneters e18 36_| Initialization of backup nenory e153 37 | Setting of the installation-error compensay |<, tion value for the master compass 20 36_| Setting of master conpass follow-up gala en IM 80B10MO7E4.3.3. Numeric Value Setting This subsection explains how to enter command codes and other numeric data, with reference to an actual example. First press the horizontal arrow keys ("=" or "-") to move to the entry position (digit). ‘Then, increase or decrease the value using the vertical arrow keys ("1 or "L dimmer level using command code 14. Start Press the "C" key during command wait mode. The number "0" in the 6th digit blinks as shown in the figure on the right, indicating that conmand entry is now enabled. <2> Entering the command code (a nunber in the tenths place) Set the nutber in the tenths place of the command code to "1" by pressing the "T" key once, <3> Moving to the next digit Press the "=" key once to move the entry position right one digit (unit place of the conmand code). ‘The number in the tenths place ("1" in the case) is now set, and the number "0" in the unit place starts blinking instead. <4> Entering the command code (a nunber in the unit place} Press the "1" key four times to set the number in the unit place to ma, + The following procedure shows how to display a O IM 80B10M07E,<5> Executing conmand code 14 Press the "E" key while command code "14" is displayed. The func- tion of command code 14 is execut- di- | || ed, and the dimmer level appears on the display. Pressing the "=" key moves the entry position right one space. The nunber in the entry position is incremented or decremented each time the "T" or "L" key is pressed. If the "1" key is pressed while "9" is displayed, however, the nunber returns to "0." Similarly, pressing the "1" key while "0" is displayed changes the number to "9." ah eosiomo7E4.4 Display Function Various information can be displayed using command codes which have a "1" in the tenths place. Information items which can be displayed are as follows: (1) Gyro data Compass heading and repeater heading (2) External azimuth data : Azimuth obtained by an external sensor and its deviation from the true heading (3) Rate of turn trate of turn in 1" /s or 1° (4) Running time i Gyrosphere running hours (5) Dimmer level Hlumination intensity dmin (6) Phase current etc. : Gyrosphere phase current, battery voltage, and deviation voltage (7) Software version number 4.4.1. Displaying Gyro pata Two types of gyro data, compass heading and repeater heading, can be Press the "=" or "=" key to displayed by entering command code "10E." change the data item on the display. Compass heading (000.0 ° to 359.9°) ‘The azimuth obtained by the master gyrocompass is displayed. <2>, Repeater heading (000.0° to 359.9") ‘The repeater heading follows the gyro true heading, This repeater heading is output to external de- vices. : The above data items are displayed alternately (, <2>, . time the "+" key is pressed. L ea 5) IY +) each Im BOBLOMOTE,4-10 4.4.2. Displaying External Azimuth Data if azimuth data is supplied by an external sensor, the azimuth from the external sensoz (zeferred to as external azimuth) and the deviation from the true heading can be displayed by entering command code "118." Press the "+" or "=" key to change the display. eae See oy Aes external sensor is displayed. <2 beviation trom trum neaiog ({-180.0 * to 180.0°) Be dviaio sf totems at EP OI muh fran tho Cro heading fa aoe Biayes (Deviation = true heading - exter- nal azimuth) The above data items are displayed in ascending order (, <2>, <1>) each Sime the "-" key is pressed. To reverse this order, press the "<" key, IM e0B10M07e4-ar 4.4.3, Displaying the Rate of Turn The rate of turn is calculated based on the currently-selected azimuth (GYRO or EXT) and can be displayed in 1" /s (the rate of turn is not displayed during one-way turning of the master compass). Press the "+" or "-" key to change the data on the display. Enter conmand code "125" to enable this function. Rate of turn in Xxx. mosses? EEL HOE) 4.4.4 Displaying the Running Time This function is usefull to manage the system maintenance. Gyrosphere running hours can be displayed by entering command code "135." Running hours of the current eer ese wen CUIUOTIGG 4.4.5 Displaying the Dinmer Level ‘The illumination intensity for LEDs and backlights can be displayed by entering command code "14E." (00 (ote) to “31° (max.}) die | IM 80B10MO7E4-2 4.4.6 Displaying The Gyrosphere Phase Current ete. The following three types of ADC input data can be displayed by entering command code "158": gyresphere phase current (for driving the gyrosphere), menory backup battery voltage, deviation voltage (between compass card and gyrosphere). Press the "=" or "=" key to change the data item on the display. <1> Gyrosphere phase current (0.00 A to 9.99 a) HO Ge Normal value:0.25 A to 0.35 A <> temas acy teny vote ree KEE Sep Normal value:2.5 V to 4.0 ¥ cb bevtcion wateage eee HELL OG Normal value:-0.4 V to 0.4 V The above data items are displayed in ascending order (<1>, <2>, <3>, gry) Sach time the "=" key is pressed. To reverse this order, press the no" key. 4.4.7. Displaying the Software Version Numbers A software version number can be displayed by entering command code "198," This function, however, is not used for ordinary operation but for mainte- nance. The data on the display can be changed by pressing the "=" or "=" key. Version number for control Eat | ‘| || unit software a! IM 80B10M07E,aaa3 4.5 Setting Function This section describes how to set the following items to operate the gyrocompass. These settings are enabled by entering the corresponding conmand codes which have a "2" in the tenths place. (2) Selection of heading output Select either the gyro true heading or external azimuth. (2) Butomatic aligning of the master compass card reading ‘The master compass card reading is automatically aligned to the control box data. (3) Manval aligning of the master compass card reading ‘The master compass card reading is manually aligned to the control box data. (4) Manual aligning of the repeater compass card reading : The repeater card reading is manually aligned to the data displayed on the control box. (5) Manual setting of the speed-error correction value : Manually enter the speed-error correction value to adjust the compass heading. ‘the corrected compass heading is then output as the gyro true heading. (6) Start-up timer setting Set the time duration to the system restart; the remaining time is displayed. 4.5.1 Heading Output Selection Either the gyro true heading or external azimuth can be selected as an azimuth output. Enter command code "20E" to start this setting. The current type of azimuth output, either "GYRO" or "EXT," appears on the left side of the display, ‘The selected azimuth output is indicated by the following letters in the 5th to Ronee = ors el Adc) Oe External azimuth Press the "B" key to change the azimuth output, then press the "=" or "=" Kev to select the desired azimuth output. (The’ "=" sign appears if data can e entered.) ‘Gyro true heading’ is selected. Aeon <2> ‘External azimuth’ ie selected, ACFE IM B0BL0MO7E,4-u4 To select 'gyro true heading,’ press the "E" key while "GYRO" is displayed as shown in'<1> above. To select ‘external azimuth,” press the "E" key, wile "EXT" is displayed as shown in <2>, rn both Cases, pressing the "s Key completes the setting. If the "C" key is pressed instead of "5," the setting is canceled and the display returns to conmand wait mode. Note 2) Selection heading output during stand-by state External azimuth may be selected even when the gyrocompase le in stand-by (efer to 4.11) but the gyrocompase will be shut down error code 022 occur and “PATL" alarm lamp flickers and buzzer sounds. Press the buzzer stop switch for acknowledgement. At this time, If gyro true heading is selected error code O22 will be reset and gyrocompass will be started again. (Brror\code 022: under stand-by. state, the gyrocompass is shut down for selection of external azimuth.) Note 2) Selection heading output in gyzeaphere failure Tf gyro true heading 38 selected again after selection of external azimuth for gyro- sphere failuar, ezror codo O10 and O21 will be reset and gyzocompaco will be restar:04 [ Befor cofe 010 he pase ouront rensis sbois 0384 for at eat 20 mite o> Etro cols S21" he phase eavrst Fenn sore O38A for et eet 2D mites | ‘and the phase eurront is OA for the gyrocompase shut down 4.5.2 Automatic Aligning of the Master-compass Card Reading ‘This subsection describes how to automatically align the actual master compass card reading to the data displayed on the control box (ence it is aligned, no additional settings are required unless the container unit is moved during power failure), Enter command code "235" to start this setting. This function is required after changing the gyrosphere or main assembly board. The sample display on the right Li- HY indicates the ready condition. a Press the "E” key to start the aligning operation. while aligning, the following display <2> appears. Press the "C" key to cancel the aligning operation and return to conmand wait mode. <2> Aligning is now being carried out. The container unit turns once and automatically detects a zero point. Even while aligning, you can cancel the operation and return to command wait mode by pressing the "C" key. «<3 If aligning is successfully con = pleted, the display changes as. zl | — IE In zi shown on the right, This indicates os the end of aligning. a IM 808106078<> If the aligning operation fails (a zero point could not be detected), A dic | the display changes as shown on the right. “In this case, mencally align the master compass, 4.5.3 Manual Aligning of the Master-compass Card Reading ‘This subsection describes how to manually align the actual master conpass card xeading to the data displayed on the control box (once it is aligned, he additional settings are required unless the container unit is moved during power failure). Enter command code "245" to start this setting. Normally, the master compass is aligned automatically using conmand code "238." However, manual aligning is also available as an alternative means. Enter the master compass card reading in stron ojo (2707 Yona te Ale IS Press the "s" key to complete ‘the setting and réturn to the entry wait state. Press the "C" key instead of "5" to cancel the setting and return to conmand wait mode. For details on how the reading changes during this operation, refer to Subsection $.3.4, "If Deviation of Reading Occurs," or Appendix 4, "Change in Reading during Individual Operations." IM 80B10MOTE4-16 4.5.4 Manual Aligning of the Repeater Compass Card Reading This subsection describes how to manually align the actual repeater compass card reading to the data displayed on the control box. Since the control box does not have a sensor for detecting the repeater compass reading, it is necessary to manually inform the control unit of the reading when the system is initially started (once this is set, no additional settings are required unless the repeater compass is moved’ during power failure). Enter command code "25E" to start the setting. dapeed ggPSS grees sai -EE arrow keys, Press the "E" key to complete the setting and return to the entry-wait state. Press the "C" key instead of "E" to cancel the setting and return to conmand wait mode. For details on how the reading changes during this operation, refer to Subsection 5.3.4, "If Deviation of Reading Occurs," or Appendix 4, "Change in Reading during Individual Operations." 4.5.5 Manual Setting of the speed-error Correction value This subsection explains how to enter the speed-error correction value which was obtained from the calibration table based on the current latitude and ship's speed. The compass heading is adjusted using this correction value, and output as the gyro ture heading, to external devices connected. Gyro tuue heading (deg) = "Compass heading ~ speed-erzor correction value Enter command code "285" to start the setting Enter the spead-error correction value (-12.1" to 12.1°) using the arrow keys: (rat, "an, "TH, "dy. When setting the EL =H I AG sign, "=" and “0” are displayed alter bo nately. Fress the "E" key to complete the setting and return to the entry-wait state. Press the "C" key instead of "2" to cancel the setting and return to conmand wait mode. 4 speed-error correction value can be looked up in the calibration table which lists the set of values calculated from the following equation: Speed-error corrction value (degrees) = ship's speed (kt) * cos (compass heading) Sn Gos (latitude) 1M 80B10M0784-0 4.5.6 Restart Timer setting me gvFe system can automatically be restarted after a specified duration, Enter command code "298" to start this setting. The following shows how ¢o set an automatic restart after 12 hours: Enter conmand code "298," Enter the time after which to automati-— cally restart (00 hour to 99 hours)using the ISIE —| WA arrow keys. — Press the "5" key. one reser a Ae Sl Press the "C" key instead of "E" to cancel the setting and return to command wait mode. MY While the timer is counting down, only the power lamp is on and the renaining time is displayed; all other indicators are off. Even in this state; however, it is possible to cancel the timer and start the system immediately by pressing the power switch. Note 1) Whenever gyro restarted by setting timer, output heading will be gyro true heading. Lf timer setting is reset by pressing power switch, gyro system will be restarted with the same state at timer setting. caution Never disconnect the AC power supply from the ship while the timer is running. TM 80B10MOTE5-1 5. MAINTENANCE nessgsectton describes thé daily inspection and periodic maintenance necessary for accuzate and trouble-free operation of che qyroconess 5.1 Daily Inspection Teens Description Tispection Sneerval T | Syrosphere a Measure the voltage between points 27] Once a nome TeTOre Ang voltage end | and '26" on the contesl bow fereinad heaving port) 2 | Repeater align- | Confira that each repeater conpass cara | When lanviny port nent Beading is the sane aa the master com Pass card reading. 3 | Contact esis" | contism that the contact resletance of ] Once -a year (BGEOTe tance of the fhe waster compass slip ring is 100 or | leaving’ sort} 4] Maze pover sup~”[weasure the alam power av teminais P| uetore Tensny POP ply ‘and Won the control box using 2 volte fer, and contism that the alarm power fs 21 be to al ¥ be 5 | Astnuth errex | check by astrononical or pnysical abser™ | Once @ Gay To check repeater compass card readings, manually set the speed-error correction value to "0" using command code 28, Ruth the correction value set to “0”, the compass heading’ should gate with the repeater heading (true heading). This is°shonn Sy Ene following equation: compass heading - (speed-error correcrion |___ value} = repeater heading. Reena _ ———"| “ Refer to the circuit and wiring diagrams in Appendix 4 for details. +2 Periedic Maintenance Periodic maintenance must be performed once a year as follows: Teens Description 1 | Gyeoephere Glean the electrode, replace the firet-phase wercury Wd ingulating Tiguid, and clean the mersury pote 2. | container/Ginbar Clean the inside of the container and the electrodey 3 | supporting Ligala Replace «| Sip wang and brash cies Note : Refer to Section 6.2 in this manual for details on overhaul and reassembly, Im 80B10M0TE5.3. Troubleshooting ‘This section explains how to confirm the error codes when an error oc- curs,and descrives the meanings of error codes and necessary action. 5.3.1 Confirming The Error Codes If an error occurs, first check to see if an error code appears on the general-purpose display of the control box. Enter command code "26E" to iook up error information obtained by self-diagnostics in the control unit. TM BOBLOMO7E,(1) Control unit zrror codes 543 Control unit error codes can be comfirmed using cormand code "262" as follows: Enter command code "26E." A sample display is shown on the right. Enter command code "265." A sample display is shown on the right. The period "." placed at the end of “err” (i.e., in the third digit) indicates that the error remains unsolved. EI IF) INE Exxor codes are displayed in sequence each time the '=! or '~" key is pressed. This code indicates an error which has already been returned to normal condition. After confirming the code, press the "E" key to reset it. ‘The sample display on the right indicates that there is no error. (Refer to Subsection 5.3.2 (1) for deta: probable causes, and remedies.) Er -| WE IE|- ils on the meaning of error codes, 075 | Remote unit (Type 3 Operation panel) Error Description Error Description code (contro! unit errer) code (control unit error) 010 | Gyrosphere failure 074 | Remote unit 020 | Inverter failure (Type 3 Operation panel) 021 | Phase current OFF state fallure by eyrosphere failure 080 | Master compass mis- 022 | Phase current OFF state alignment by selection external azi- | 090 | Serial port 1 time-out muth during stand;by state | 091 | Serial port 1 overrun 0s1 | ROM failure 092 | Serial port 1 framing 031 | RAM failure 093 | Serial port 1 parity 040 | Backup battery fallure 094 | Serial port 1 checksum 060 | Type 2 operation panel 100 | Serial port 2 time-out failure 201 | Serial port 2 overrun 070 | Remote unit 102 | Serial port 2 framing (Type 3 Operation panel) 103 | Serial port 2 parity thine-out 104 | Serial port 2 checksum o71 | Remote unit 110 | Serial port $ time-out (type 3 Operation panel) 11 | Serial port 3 overrun overrun 112 | Sorial port 3 framing 072 | Remote unit 113 | Serial port 3 parity (Type 3 Operation panel) 214 | Serial port 3 checksum framing 120 | Speed-error correction checksum error Im BOBLOMO7E,‘The error codes, +2 Error Code Data and Remedies Teanings, and remedies are summarized inte errors occur- ting in the control unit and in the operation unit respectively, (1) Control unit Errors The following errors are detected during self-diagnostics in the control unit. Enter command code "265" while in command wait mode to display the error codes. Error Code | Error description | Probable causes Remedies 010 | Gyrosphere failure; | Excessive current | Replace the the phase current’ | flowed gue to a ayrosphere Teneins above defect in the 0.35 A for at least | gyrosphere 23 minates. 020 | Inverter failure; Defect in the > Check the output of the ‘phase current power supply uit |’ the poner supply remains below 50 Tn'the inverter unit’ (between EA'for at least 2 section 153.27 and 28, 100 v Seconds. aC te 11s Vac). + Disconnection be fueen the control | compass + Check the wiring and connect ions (conductivity be tween TB3.27’ and 2). O21 | Phase current OFF | Rxceasive current flow-| Replace the gyrosphere. state by gyrosphere | ed due toa detect in the failure, ayrosphere. (022 | Selection external | Phase current is turn | Solel gyro heading azimuth in stand-by | oft with soloction ex alate. ternal azimuth in stand- by state. 030 80M failarey 7B defect in the Replace the main a= checksum error in | memory element sembly unit the ROM ‘var toag) Oat _| RAM failures B detect in the Replace the main as~ read/write error in | menory elenent Senbly unit the RAMs iwentbaa) 040 | Backup battery ‘The memory backup | Replace the main ao> failure; the volt- | is battery fat Senbly. unit age of the menory | (Backup battery wertéasy backup battery lite: at least 16 arepp6 below 2bv. | youre in cnenereizes Bate) Im 80B10M07E5-3 Error 08 robable. Causes Remedies Error Deseription Probable Cat ‘i 060 JFaiture in a switch on the operation | A defect in a.switeh on | Replace the operation panel panel; the switch is held down for 1 | the operation panel (VBLIOKY), minute oF more. ‘oro | Remote unit (Type 3 operation panel) ‘Time — out Disconnect between the | Check the wiring between transmission from the operation} control box and the | the control box and the panel stopped for 10 seconds. | remote unit remote unit, on ‘Overrun error Error detected three times in on Framing error Envor detected three times in 73 Checksum error Error detected three times in om Operatoin panel failure ‘A defect in a switch on | Replace the operation panel the switch is held down for | the operation panel (vatloaB), 1 minute or more. 030 | Master compass misalignment; ‘A defect in the zero— | - Check the zero point ‘the zero point of master compass could) point sensor unit. sensor unit and replace not be detected. if necessary, Manually align the mast compass using command code 24, 0x0 ihre’ in: arial port. 1 Input to TBL- 16 (RDIA) Falun mee and TBI ~35 (RDIB) ‘Gee Section 42 in Appendix. 4.) ‘Time — out: Y Disconnect between the | Check the wiring between ‘transmission stopped for ten | control box and the | the control box and the times the transmission period. | connected device. connected. device 091 Overrun error Check the connected device | Error detected three times in succession 098 Framing error Error detected three times in 193 Parity error Ero detected three times in succession 004 [Checksum error Error detected three times in IM 80B10M07Seer Error Description Probable Causes Remedies Code 100 | Failure in serial port 2 Input to TBI ~ 18 (RD2A) and TBI 84 (RD2B) Gee Section 42 in Appendix 4) Time — out Disconnect between the | Check the wiring between transmission stopped for ten | control box and the the control box and the times the transmission period. | connected device. connected device 101 Overrun error : Check the connected device! Error dotocted three times in 102 Framing error Error detected three times in 103 Parity error Error detected three times in 104 Checksum error Error detected three times in 110 | Failure in serial port 3 Input to TBI ~ 14 (RDSA) and TBI $8 (RD3B) Soe Section 42 in Appendix 4) ‘Time — out ; Disconnect between the | Chock the wiring between transmission stopped for ten | control box and the the control box and the times the transmission period. | connected device. connected device an Oversun error Check the connected device| Error detected three times in succession 112 Framing error Error detected three times in succession, 113 Parity error Error detected three times in succession. m4 Checksum error Error detected three times in Th gop10Mo7E5.3.3. If No-voltage Alarm Occurs If the onboard AC power supply to the gyro system fails, the no-voltage alarm lamp on the operation panel starts flickering and a buzzer sounds. All other indicators (except PWR LED) go out, and the gyro system stops. If the no-voltage state continues, press the buzzer stop switch to stop the buzzer sound and the alarm lamp from flickering. (If the gyro system is equipped with the backup battery, a buzzer sounds but the system continues to operate normally even if an AC power failure occurs.) ‘Troubleshooting Flow Is the voltage between the onboard power supply terminals U and V in the control box normal? Yes No. Recover the onboard power supply Have Fl and F2 fuses in the control box blown No ves hes Check the short circuit. short No short Possible break in the control box Please contact | [ Reset the wiring. Please contact our ser= our. service No. Fuse vice division, aivision. braker. IM BOBLOMO7E,5.3.4 If Off-Set Error Occurs The following shows the normal state of each reading and azimuth: During navigation 150 150 150 190 158, 153, ship's Repeater Repeater Repeater Master = Master heading compass compass -—«corpass——=cempass compass card cazd reading reading card reading reading =“ —1_ reading Control box digital reading a = speed-error correction + installation~ ‘or compensation 9) During berthing 150 150 150 1505 SHhdSS ship's Repeater Repeater Repeater Master. Master heading compass. «compass. «compass © compass._-—compass card card reading reading card reading reading = _______1_ reading Control box digital reading b = installation-error compensation * The repeater compass reading and master compass reading can be dis- played on the general-purpose display by using command code 10, or on the azimuth display using the mode select switch. ‘The speed-error correction value can be displayed on the general-purpose display using conmand code 28, or on the azimuth display using the mode select switc! ‘The installation-error compensation value can be displayed on the general-purpose display using command code 37, or on the azimuth display using the mode select switch. The relationship between the repeater and master compass reading is shown below: Repeater compass reading master compass reading + {-(speed-error correction value) + (installation-error compensation value) } ‘The ships heading, repeater compass card reading, and repeater compass reading should be the same. IM 80BLOMOTEUse the following procedure to check and correct any deviation: To make speed-error zero ‘To make installation- error compensation zero. Set the speed-error correction value code 28. ‘to '0" using command * The compass readings and azimuths are as follows: oO Reading of each repeater Master compass, compass: card reading Set the installation error to *0 deg? using command code 37. * Record the current installation- error value, and enter it again after the deviation has been corrected. * All readings must be the same. Press TET key the fol 'G,* 12)" "4," then the yin thts order to stop low-up of each reading. * The current reading appears on the general-purpose display as shown below: Ala}co|=|*]«}« weeem: Current reading * Bt this time, the zero point is output te each instrument; thus each reading should be *##.00 deg. * Check that the readings of all the instruments are the same. If not, correct the deviation according to the procédures given on the following pages. IM 80BLOMO7E5-10 ()case 1 The figure below the decimal point is not '00' in a repeater compass reading. Example) Repeater compass Repeater compass 1 Repeater compass 2 reading at control box card reading: card reading: 123.00 * 123.00 * 123.40" In this case, repeater compass 2 has a defect (e.¢., deviation of the synchro-motor zero point), Overhaul and check its (2)case 2 ‘Tae integer part of a repeater compass reading is not correct. Example} Repeater compass: Repeater compass 1 Repeater compass 2 Yeading at control hox card reading: card reading: 247.00 ° 247.00 249.00" Adjust the reading of repeater compass 2 to the other repeater compass reading (repeater compass reading) in the following manner? —— Loosen the nut in the middle of the face glass of the repeater compass. Put an appropriate size of minus screwdriver in the slit on the plug in the middle of the face glass. Turn the plug while pressing it with the screwdriver, and set the repeater compass reading to the master compass reading. Remove the screwdriver from the plug. Then, securely tighten the nut until the plug is raised. IM 80B10M07Es-1 (3)case 3 AL] repeater compass card readings deviate by the same amount fron the ¥epeater compass reading at the control box. Example) | : ‘ : } . Repeater aepeater Repeater Repeater ‘compass reading: compass 1 compass 2: compass 3: card reading: card reading: card reading: 15.00" 12,00" 18.00" 18.00 ~~ Manually enter '18' using conmand code 25 (manual alignment Of xepeater compass) to adjust all the repeater compass readings to the repeater compass reading. ‘The readings will change as follows: Repeater Repeater compass reading: ‘compass 2: card reading card reading Repeater ‘compass 2: card reading IM 80B10M07E5-12 (4)case 4 ‘The repeater compass readings, repeater compass reading, and master compass reading are all the sane, but they are not equal to the master compass card reading. Example} compass compass conpass 318.00" 317.00 * 317.00" m3 nopeater epeater epeat compass 2 oad reading compass 2 card ceading conpass 3 card reading 317.00 * 317.00 * 317.00 * Adjust all the repeater compass card readings, repeater conpass reading and master compass reading to the master compass card reading using either of the following methods: * Use command code 23 (master compass automatic alignment). * Menually enter '315' using command code 24 (master compass manual alignment). The following is the result of this operation: a master waster Repeater ‘compass compass compass card reading: reading: reading 318.00" 215.00" 31s.00° Fopester Repeater Repeater ‘compass 1 card veading: compass 2 cand casing compass 3 card reading 315.00 ° 218.00 * 315.00 ° If other deviations occur frequently after a deviation has been Dy corrected as described above, -tefer to Subsection 5.3.7, "If follow-up error occurs" in this manual ™ 80B10MO7EFor details on a 24, ox 25, refer Pages, "Function 5-3 change in each reading caused by command codes 23, to "How to Correct a Deviation” on the subsequent Block Diagran” in Appendix 3. 1M 80510M07E,5-14 How to Correct a Deviation The table below shows how to check deviations of individual readings, and how to adjust all the readings to the master compass card reading, with reference to the example given in the table. wo, | operation as capiay cies” | cing | reat | “She” | ae 1 [rate 263.2 to] 265.2 col265.2 eo]26s.2 colass.7 to|207.2 volaa.a to} och cating totems ems 363.3] 265.3] 265.3, | 265.2 | aes.e | 267.3 | 200.3, Breve tO nine [ets the vain of wan ABCERES asce™ fassts" |oete "Jae [sts [see [sre tt jenn fey 0.5 ° by 2-0 * sates [ois | man Sing. [Stains IM 80B10M07E5 at pecason an diptay Ste” | feasig | Serum | “Cee” | Scag? | Super | suse fgg [eee [ae fenee mage [mow [ome Sering tema js pone eatin ~ Hei-E515) Eu all the eepestar cor [263.2 6]265.2 tof sto ot |acepe at [toon at [sons ar | scopa at ests atate tricone | 263.3, | -a6s.a [0 ae” [aso [250 [Eats IM 80BLOMOTE263.2 c0|265.2 v0] j263.2 to|265.2 tol26s.2 tol sure as [ete ot 202.2 to|265.2 tof2es.2 tolaes.2 to|26s.2 to|2es.2 to] 265.2 tol 203.9 | 265.9 | 265.3 | 265.2 | 265.2 | 205.3 | 20.3, Im 80B10M07EIM 80BLOMOTE5-18 toaten | slr cote he mutes canpata cont [263.2 to] 375.9 |a6s.2 tofaes.2 wolaes.a to 365.2 vol fortes he tesaes | “269.9 [265.3 | 265.3] 268.3 ee ae j2s3.2 t0|260.2 eol26s.2 eof | | Mgigtat eae cmsae | ea. | aeaay asa ff | Scams Sescallg"* [2ea.2 eo |2ea.2 tol 263.2 tol 265.2 vo|aea.2 tolaed.2 tol 69.2 to 263.3 | 263.9] 263.9 | 265.3 | 205.3. | 208.3 | 265. sineCesmutt centage [263.2 to 263.2 vofzea.2 colzea.2 to[zea.2 t0l2ea-2 to|263.2 ea 26a.a | 263.3 [263.3 | 263.3 | 26a.a| 203.3 | 203.3, panto te epiay epiay AGICISEI-A IM BOBLONO7ES219 None-way turning" means that the gyrocompass card continues changing in one direction regardless of the heading of the ship. ‘Troubleshooting Flow (1) Both the master and repeater compasses are turning in one direction: 1s the turning tate about Bo\degrees in 10 2? ves » fa | sereite division 1s onesnay turning svopped by shorevet roasting techinad NO."30 ana 31 ping ot the master conpaas 5 es__ | vorsibia break in the a ising inthe conta nes (sen brush ana’ slip zing. Pitase coneact oot No eiviston. 1s one-way turning seopped by shorvwetseateing Tees ahd =21 in the gyeo contsed bee ‘Posesle boeak in the Yes | wiring between the 720 Contra bow and’ the cause, epais the break. Bossible defect in the gyro control box. Please contact (Please refer to Appendix 4-6.) IM 80B10M07E5-20 (2) Only repeater compass is turning in one direction: are sare | ie eon th | feptece iar ces She eeltsge Sines the sange of si5v to SAV, Besieeaey fe Saisie ESteg (Hest anata ose) Blea fad!aseced Cospes’ in seecaliecticr selpst ccna contact ae Service || TEES ARES. || Soonbe egh, the, feliaesp line ce | RE Raaser etasket cir || Rescibte dotect, in che Seevice || Sontzo nox ena SPS, Selah. || Sea ath Synchro Motor Inspection Turn off the power supply to the gyrocompass. <2 Disconnect the cable (OR1, OR2, OSl, 032, and 0S3) which comes from the control box. Measure the resistance of the coil in the synchro motor while rotating the synchro motor shaft. ORI-ORZ : 300 to 5000 0S1-0S2 : Each resistance must be almost the same and in 082-083 the range of 5009 to 9000 ree RL, 0R2-281, 052, 83 = & ont, oR2-syneneo metor case - 081, 052, ass-smchco motor case r= 1M BOB10MO7E5-2i 5.3.6 If Follow-up Error Occurs “Follow-up error" means that the repeater compass does not corzectly follow a change in the master compass card. ‘Troubleshooting Flow Follow-up Error in Repeater Compass [ Mescuce the voltage between | Riana ed che Pepe | Seupase having’ the Fsilomop [Te'the wottage +15 a5 LS Ge fine Ga ar ves | | Blcan? i Leest | ——t_ iE ‘the fuses (SL «aa ] Mee) susan Tt EEL | [me [creck the shore circuit, }—! shore [Wo ohoe ‘Tum the eepester compass in Derate teehee. | Ssrataatere™ | [¢ feilege’aeowen staf, | patie tiaeg BO || more [ne se sect PaT eo Fave | [ese | [ples tHe fie. | oc | Selsion, Inthe sepentes i | sine Pletse | | Setvise Sivssion [ cheek the synchro water in Semi Stettapeeed Sar te | Please refer to Appendix 4 Wiring Diagrams. IM 80B10MO7E6. INSTALLATION ‘Any operation described in this section must be carried out by personnel Jof YOROGAWA-AUTHORIZED service station or with the asistance of cur service engineers. 6.1 Installation Notes The gyrocompass system must be installed carefully with special attention to the points described in the following subsections in order to ensure accurate, trouble-free operation for 2 long time and to facilitate mainte— nance. 6.1.1 Vibration Resistance Securely reinforce the following floors and walls to prevent resonant vibration with the hull: the floors on which the master compass, 2 horizon- tal stand is installed; the walls on which a control box, horizoncal bracket, course recorder, digital repeater or ether equipment is installed. 6.1.2 Parallel Alignment to Base Lines The lubber Line of the master compass and that of the repeater compass mounted on @ horizontal stand or bracket must be paralle! co the bow-to-stern line of the ship within a tolerance of £0.2 degrees. This parallel alignment is the basis for the accuracy of auimuth measurement. 6.1.3. Service Areas Adequate space should be provided to allow for easy operation and mainte- nance. The figures given below show the necessary service areas. (1) Master Compass (2) Control Box 3 g ea 08 a al 3 foams wal F IM B0BL0NO7E,6.1.4 No Megger Test Zo avoid degradation of electronic parts, the master compass and control box must not be subjected to insulation resistance tests and a megger test. 6.2 Overhaul and Assembly ‘This section describes how to overhaul and assenble the master compass. 6.2.1 Precautions on Overhaul (1) Dp not overhaul, the master compass ox irenove the gyrogphere within 90 minutes after the gyrecorpass power has been turned off. (2) Before starting overhaul, tidy the work area, secure there is enough Tighting, “and get ail thé necessary tools ready. Use the right size of screwdrivers and wrenches to avoid damaging screws and nuts. (3) Overhaul in the following manner to make easy reassembly: before starting overhaul, put marke on the points where components East 'Ge aligned SIEn"2ach Behar® . Temporarily insert renoved screws in the holes where they belong | Place zenoved components on clean paper of cloth in the order ha Ehey were venoveds « When disconnecting wires, record the wire colors or put a mark on each sire: (4) Do not overhaul unnecessary sections; overhaul only the minimum. (8) Never overhaul the gyrosphere. 6.2.2 Installing the Gyrosphere (1) Remove the front cover, and discon- nect the 4-P connector’ from che 4eP container unit. (The 4-P connector connector: {s' attached at 90-degree (east) position of the compass card. If you cannot reach the connector, Zurn the container slowly by hand.) Front cover (2) Loosen the 2 screys (at positions) which fasten Shanber . Tm 80BL0MO7E3) 6-3 Holding the container securely. turn it anticlockwise and remove it from the stopper. Be careful not to drop the container unit. a (5] Remove the air chamber by 1ifti: edge of the container. (6) Remove the rubber cover. A\ CAUTION Precautions in handling the container: + Hold the container firmly with both hands uring handling to avold éropping it + Accidental dropping of the container may Tesult in damage to the internal mechanism or personal injury. g it up to avoid the knock pin at thea (a) (9) (20) qu) czy Remove the cap. center pin Inner gimbal ring Fastening screws Outer gimbal ring Wipe your hands clean with a supporting liquid. Clean the surface of the gyrosphere with a thin cloth dampened in a supporting liguid. Also clean the inside of the container and cap cover in the same way. Clean the mercury pot in the gyrosphere and the tip of the center pin with a thin cloth. IM 80BLOMOTE65 (13) Slowly pour supporting liguid into the container up to the top of the outer ginbals (approx. 2.4 liters). Outer gimbals Inner gimbals (14) Check that the lead wire between the outer and inner gimbals is perpendicular to the outer gimbals. If it is inclined to the inside or outside, the wire may touch the inside of the container or the gyrosphere, reducing the accuracy. If the lead wire is inclined, correct it, taking care not to break it. Lead wire between the outer and inner. ginbals Inner ginbals (15) Hold the gyrosphere and slowly insert it in the gimbal ring while tilting the inner gimbals. Since the surface of the gyrosphere is slippery, take care when holding it, To hold it more securely, hold the lower part of the equator ring. Slightly tilt the gyrosphere while taking care not to damage the electrode at the bottom, and pour supporting liquid in the funnel section. ZX CAUTION Precautions in handling the gyrosphere: ‘+ Hold the gyrosphere firmly with both hands uring operation. Do not allow any severe impact on the gyrosphere. + Do not drop the gyrosphere. A failure to observe this instruction may result in Gamage to the internal mechanism or personal injury. + Do not disassemble the gyrosphere. IM 80B10M07E(16) Wipe out water from the center-pin hole area on the inner gimbal ring with a thin cloth, then insert the center pin, (17) Mercury is supplied in a small glass bottle, with an aluminum seal top. Remove the seal and the rubber cap, insert a syringe needle, Suck up all the mexcury (0.3 mb), then syringe it inte the mercury pot (up to the top of the metal part). Z\ DANGER §@ RISK OF MERCURY *Do not allow the mercury used with this Instrument to come into contact with skin Ifany incidental contact with the mercury cccurs, wash it off immediately. *Should the mercury accidentally spilt, draw it off with a syringe or the llke and keop it in a glass bottle. etal part (28) Insulating liquid is also supplied in a small glass bottle. similar- iy, remove the aluminum seal from the top of the bottle and remove the rubber cap, insert a syringe needle, suck up ll the insulating liquid (1-0 mb), then slowly syringe the liquid out onto the mercury. Take caze not to allow the needle to touch the mercury. 2.0 mb syringe IM 80B10M07E(19) Reinstall the-cap slowly. Align the notch on the cap with the elec- rode (the knock pin to the right of the connector must be aligned with the mark on the cap). (20) Adjust the amount of supporting liquid by checking the liquid level as shown below. cap ‘outer gimbal ring Inner gimbal ring- (21) Looking through the hele in the cover, confirm that the center pin is located in the middle. If it is not, the gimbal ring may not be balanced properly. Check the gimbal ring. Head of center pin COVER Tole In middie More than one seconds ole in middle of head of center pin of cover must come out. (22) Reinstall the cover. 1M 80510078,(23) Reinstall the air chamber (24) Align the knock pin, then fasten the air chamber with the 8 screws. (25) Reinstall the container in the master compass unit. The container must be attached to the damper section with the 4-P connector posi- tioned at Zast (90 degree). (26) Tighten the screws at the N and § positions. (27) Connect the 4-P connector, and reinstall the front cover. TM BOBLOMO7E,6-3 6.2.3. Replacing the Repeater Compass Lanps (1) Place a repeater compass on a plate, with its compass card face down. Put alignment marks on the bottom cover and the body. (2) Remove the 8 screws from the bottom cover. (3) Separate the bottom cover from the body by lifting it up. (4) Replace the lanps. (5) Align the marks and tighten the @ screws. Lamp Further overhaul should be avoided as much as possible, If it is required on board, overhaul the unit very carefully making sure that you can reassemble it completely. If you need any assistance, please Contact our service division. 6.2.4 Aligning the Repeater Compass Card Reading In general, once the indication of the repeater compass [including the control box with speed-error correction) 1s aligned to the master compass, ho Tore adjustments are required. However, it ¢s advisable to make sure the two cotpasses are aligned before starting operation. (1) Loogen the nut in the middle of the face glass of the repeater compass cara. (2) Put,an appropriate size of minus screwdriver in the slit on the plui inthe migdie of the face glass. es (3) Turn the plug while pressing it with the screwdriver, and set the repeater Compass card reading to the master compass card reading. (4) Remove the screwdriver from the plug. then, securely tighten the nut until the plug is raised. png ua“ The above aligning must be done while the gyzoconpass is operating. (2f a Geptzel box with specc-ersor correction is used, apecity “bY as tae Set Speeds IM 80BLOMO7E,6.2.5 Supporting Liquid Approximately 2.4 liters of supporting liquid are used in the master compass unit, and further 3 liters of supporting Liquid are provided for spare. Contact Yokogawa for further supplies. Supporting liquid should always be supplied by Yokogawa, but in unavoidable circumstances, you may Prepare supporting liquid as follows: Distilled water aie Put the each material in distilled water at tHe specified rate. Heat the mixture up to 80U to 99% until the Benzoic acid 3.29 benzoic acid dissolves in the solution. Glycerin 145 ot, Note : If the specific gravity of the prepared liquid deviates from the value shown below, add glycerin or distilled water to make fine adjustments, ‘Temperature | Specific gravity 15 °C 1.0230 + 0.001 20 °C 1.0220 + 0.001 25 °C 1.0208 ¥ 0.001 30 °C 1.0193 4 0,001 IM B0BL0MO7E6.3 e-u Selection of system Operation (Dip-switeh Setting) The following functions of the gyrocompass system can be set using the dip switch located on the printed circuit board of the main assenbly unit. The table below shows the functions and corresponding switch settings. No. Function ON OFF 1 Normal mode/Maintenance mode Maintenance | Normal mode selection mode 2 BC backup Use Not use 3-8 | Fixed to OFF Fixed Normal mode/Maintenance mode selection <2> ‘The performance of the system cannot be guaranteed if some maintenance function command code 30 to 39 is carried out during ordinary opera- tion. The maintenance functions should not be used during ordinary operation. DC backup This setting specifies whether DC backup is to be provided or not in ‘the event of an AC power failure, If this switch is set to ON ('use'), the gyzo system can operate without interruption even during an AC power failure. If the switch is set to OFF (‘not use'), only ‘the digital circuits including the alarm circuit are backed up. IM 80BLOMO7E Main power switch Main assembly unit on —Dip switch—F O00 No.2 OFF If dip switch No.1 is set to ON, the maintenance functions (command codes 20 to 39) are enabled. Cees mH sosioMo7e6-13 6.4 Maintenance Command Codes ‘This section describes the command codes which are used during maintenance (these codes must not be used in ordinary operation). ‘The maintenance command codes provide the following 8 functions: (1) Simalated DAC output (2) Manual drive of master compass (one-way turning) (3) Manual drive of repeater compass (one-way turning) (4) Running time reset (S} Display of followup contro} parameters (6) Initialization of backup memory (7) Setting of master compass installation-error compensation (8) Setting of master compass follow-up gain The maintenance command code numbers are identified by "3" in the tenths Place. Before using any of these conmand codes (30 to 39), set the dip switch No. 1, located in the control box, to "ON." ‘The location of the dip switch is shown in the figures in Subsection 6.3. IM 80B10M076-14 6.4.1 Simulated DAC output A simulated output of any of the following signals can be selected using this function: analog heading signal, analog quadrant signal, or analog rate-of-turn signal. Enter the command code "31E" to enable this function. Press "1/1" keys to select a channel from which a simulated signal is output 10+ Aniog heading ston) 2 GACH! Ey "1! : Analog quadrant signal (UD) "2" : Rate-of-turn signal (ROT) After selecting a channel, press the "E" key. ‘The next step is to specify the voltage of the simulated output. TI£ you select an incorrect channel and press the "E" key, the display returns to channel setting mode again. Pressing the "C" key instead of "E" cancels the selected channel and returns the display to conmand wait mode. Enter the desired voltage of the simulated outpt woing Soe ars vay GABE (Eon v to 5.00, GE Co Press the "E" key to allow the specified signal voltage to be output from the specified channel. If the "C" key is pressed instead of "E", the setting is canceled and the display returns to conmand wait mode, You can also return to the DAC channel setting mode by pressing the "=" key. Once a channel enters the simulated output state, it remains in this state until this command is canceled by the "C" key. Therefore, it is possible to put all three channels in the simulated output state. TM 80B10M07E6-15 6.4.2 One-way Turning of the Master Compass This subsection describes the one-way turning of the master compass which is done to check the operation of the follow-up system. This function gauses the container to stop following the eyrosphere and rotate at a specified angular speed (0° /s to +12" /s, in 1 degree increments) . Paring this operation, the repeater compass remains stopped. One-way turning is performed by specifying an turning speed. Enter conmand code "32B" to enable the function, The turning speed (absolute value) is displayed in the second digit of LU ICAA6 | the display 0 to9: 0" fs too" ys 0 to 2: 10° /e to 12° /s The current reading of the master compass is displayed in the 4th to ‘Teh digits of the display. ‘The turning speed increases by 1° /s each time the ">" key is ‘a | | Al | Pressed. Similarly, pressing the "o" key decreases the turning speed by i" ss. Gaz" /s to 12" / displayed. ) The value on the lower line varies according to the turning speed on the upper line. No minus sign 1s If the "1" key is pressed, the turning speed is reset to 0° /s, . and the operation stops with the current master compass card reading on the display. Press the "C" key to return to command wait mode, and to allow the master compass to follow the current azimuth. Im 80B10M07E6-16 6.4.3. One-way Turning of the Repeater Compass ‘This subsection describes the one-way turning of the repeater compass which is done to check the operation of the follow-up system. This function Causes the repeater compass to stop following the master compass and to rotate at a specified turning speed (0° /s to +12" /s, in 1 degree increments). During this operation, the master compass follows the gyrosphere in the usual way. One-way turning is performed by specifying an turning speed. Enter command code "33E" to enable the function. Dar) ‘The turning speed (absolute value) is displayed in the second digit of the display. Oto 9:0" s/s to9* 0 to 2: 10° /s to 12" /s ‘The current reading of the master compass is displayed in the éth to ‘th digits of the display. ‘The turning speed increases by 1 /s each time the ">" key is pressed. Similarly, pressing the "e" key decreases the turning speed by 1" ye. (-12" /s to 12" /s. No minus sign is displayed.) The value on the lower line varies according to the turning speed on the upper line. It the "1" key is pressed, the turning speed is reset to 0° /s, and the operation stops with the current repeater compass card reading on the display. Press the "C" key to return to conmand wait mode, and to allow the repeater compass to follow the master compass. IM 80B10M07E6-47 6.4.4 Running Time Reset When a gyrosphere is replaced, the gyrosphere running hours must be reset to zero using this function (for maintenance of the new gyrosphere). Enter command code "34E" to enable the function. ‘The current gyrospheze running hours appear on the display after IE (a la Ly | A iz entering conmand code "345." Press the "S" key to enter the security code for resetting the running time. Enter the 4-digit security code, 7102, using the arrow keys. ELE Tl UC Press the "B" key after entering the correct security code to reset the Funning time to zero, or press the "C" key to cancel the reset and return to command wait mode. IM 80B10M07E,6-18 6.4.5 Displaying the Follow-up Control Parameters It is possible to display the control parameters for the master compass follow-up digital servo system. Enter command code "35E" to enable the function. The following seven parameters are displayed by pressing the key. Proportional gain 7 (0000 to 9999) Og Seas tenes co = EL ALO) AI <2> Integral gain (0000 to 9999) Ac doe) Standard value: 2 J <3> Derivative gain PoOoo co) 0 U Uy Standard value: 2000 <4> Turning speed limit (00.0 " /s to 99.9° /s) Standard value: 12.0 5 ar <8> Turning acceleration limit (000° /s' to 999° /a") S| | Standard value: 100 <6> Followup dead band (0,000 * to 9.999 * ) Standard value: 0.01 a Ss Deviation voltage/de fooestsscaete © ATL GPG I The above data items are displayed in ascending order (<1> <2> <3> <4> <5> <6> <1> ...) each time the "=" key is pressed. . To reverse this order, press the "=" key, IM 80B10M07E6.4.6 Initialization of Backup Memory All setting data are cleared by initializing the backup memory. caution Wever cazry out this operation unless otherwise instructed by one of our| service engineers. Even if this command is executed, the data still remains in memory until the system power is turned off and back on again. Take care when using this function because all setting datas such as aligning and serial port generation settings are reset to their initial values. Enter command code "362" to enable the function. Enter the 4-digit security code, “ SET | Press the "E" key after entering the Sosrect cout, “Ihe eloploy al = GIL) | Elle change as shown on the right, indicating that the memory has been initialized. If the entered security code is incorrect, you are prompted to enter another security code, Press the "C" key instead of "E" te cancel the initialization and return to conmand wait mode. IM 80B10MOTE6 - 20 6.4.7 Installation-Brror Compensation for ‘the Master Compass When installing the CMZS00 master compass, its heading must be parallel to the bow-to-stern line of the ship. If it is not parallel, compensate the installation error by making mechanical adjustments or entering the compen sation value using the keys on the operation panel. However, the keys Should only be used as a fine adjustment after making mechanical adjust~ ments or if mechanical adjustments cannot be made, use the mechanical method whenever possible. (1)__ Compensation by making mechanical adjustments First check that the heading of the repeater compass for celestial observation is parallel to the bow-to-stern line of the ship, If it is not, correct the heading of the repeater compass (parallelisa +0.2°) then adjust the base line-of the master compass. + Remove the top cover from the master compass. + Hoosen the bolts which fasten the follow-up mechanism, + Adjust the heading of the master compass. Follow-up mechanism (2) Compensation value setting Compensate the installation error by entering the compensation value using the operation panel keys on the control box. Enter command code "37E" in command wait mode to enable the function. The installation-error compensation value for the master compass ap- pears on the display. (-9.99" to 9.99") IM S0B10MOTE6-21 Press the "E" key to enter the installation-error compensation value Enter the compensation value using ee GIE-FGSS ‘The compensation value to ajust 2 master compass installation error is calculated as the difference between the master compass card reading in the settled state and the true heading by an astronomical observation or some other means. Measurements should be taken waile there is little variation in the heading of the ship, for example, while the ship is berthing. (Installation-error = (True heading obtained ~ (Compass reading) compensation value] by astronomical observation, etc.) < Example > 0.56 = 42.56 - 42.00 After the compensation setting has been completed, the master compass card reading (compass reading) does not change, but the repeater compass output is compensated. Weite down the compensation value in the maintenance record book Whenever compensating for the installation error in the master compass, using command code 37. TM 80BLOMOTE6 - 22 = 6.4.8 Setting the Master Compass Follow-up Gain ‘The master compass follow-up gain should be adjusted if follow-up operation is not smooth due to a dead band in the follow-up system or if the gain is so high as to cause hunting. Enter command code "385" to adjust the follow-up gain ‘The follow-up gain value appears on the display. Gs = AG) ‘The number in the hundredths place blinks, indicating that the follow- up gain can now be set. The valid a range of the gain is from 050.08 to 200.0%, and the standard value is 100.08. Pressing the "E" key completes the setting, and the master compass follow-up gain is displayed. Press the "C" key instead of "E" £o cancel the setting and return to command wait mode. IM 80B10M07E,6+ 23 6.5 1/0 Signal Format Generation This function provides a serial 1/0 interface on a ship without changing the program between the CMZ500 and other units such as external azimath sensors (e.g., magnetic compass and GPS), ship's speed sensors (e.9., log or GPS), position sensors (e.g., GPS), and input devices (e.g., digital repeater or autopilet]. The settings of this function are stored in the memory on the main assenbly unit, and remain unchanged unless the memory is initialized using command code "36", or the main assembly unit is replaced. sega | a port aie (1) Required components Personal computer <2> Generation software <2> Dedicated interface board <4> Connection cable IM 80B10MO7E6-24 6.5.2 Signal Format Generation Signals complying with NMBAO183 can be generated. For the operation panels of TYP2-2 and TYPH-1, the speed and latitude settings are not available (except when a remote panel is installed). (2) General Hardware parameters —[—Basd rate(1200, 2409, 4800, 9600) (Gommon to inpat Data Bit lengthci, 8} Soa output) Fusicy (neha, od, yen) Step it"tenges (1,°2) software paranevers Current 7 speed emu201 (gvwvs0) ie) Baio0” (Scevin) reading —[ yagnetic compass 1 ($scxD™) Magnetic conpase 2 (SacHD7) tacioo. (Sevan Ghzs00k. (SHERRC) RUEADIO9 ‘magnet’ (SHCADG) RMEAOLe3 tee heading (SHERDT) \-soeition— [oo sera] Ly ew Software paraneters — current ——feading — [ MVBAOI83 magnet (SHCKDG) (output) IEADIGS Pele heading oHenor} [nate of —[ nmenoiss (suenor) | fara J Lipate of —[ cueso0x (sneanc) BS wagnesic Gompast 2. (SHCERC) LY ew Hardware parameters can be set by selecting the desired value from the choices in parentheses ( } for each parameter, such as the baud rate or date bit length. For software parametér settings, data in braces [ } have already been registered in the generation software. Therefore, they can be set just by selecting the corresponding parameter. 1h 80B10M07E(2) When setting the input software format, the three ports can be freely allocated to any signal, i.e., speed, position (latitude) or azimuth signal. However, there must be a one-to-one correspondence between a port and signal. Duplicated allocation is not allowed. For example, allocating port 1 to speed and position signals and allocating ports 1 and 2 to an heading signal. When setting the output software format, three data (records) can be set for each port in both "GYRO" and "EXT" modes. Port | Selection of heading output | Record (conmand code '20") Port 1 GIRO Record Record Record ExT Record Record Record Setting the Input Software Format (New) Basic Format Without checksum & ® @ With checksum { : dl : +] sum [sine [or [ur Se ® ®@ © o © Header: his must be "5." <2> Identifier : 5 alphanumeric upper case characters <3> Data + Set data (speed, latitude, or heading) based on the loca tion of conmas (starting point: 1 to 99). That is, the location of data is indicated by the number of commas before the data value. There must be at least one corma before each data item, and the nunber of commas and the sequence of data itens must not be changed. Furthermore, each data must be represented as follows. IM 80BL0M07E,6 - 26 Speed ava Latitude aabb.cc,d Heading. a.a Select either Kt or Km/h as the unit. The decimal point and decimal places are optional (e.g., both 12.0" and '12" are acceptable). The length is variable. ("12.04," 012.042," 1012," and 1012.0" are all acceptable.) ‘aa' represents the'value in degrees, and 'bb.cc! represents the value in minutes. 'aabb' is fixed to a length of 4 characters. The decimal point and decimal places ('.cc'}of data in minutes (‘bb.ce,') are optional, thus the length is variable. 'd" represents either 'N' or 'S' to indicate a north latitude or a south latitude respectively. + Use ‘decrees’ as the unit. The decimal point and decimal places are option- al. + The length is variable, <4> Checksum : Checksum may or may not be used. "SUM 1" and 'SUM 2" are used for the checksum, and each is calculated as follows: first, all characters in <2> and <3> in the basic format are EXCLUSIVE ORed, then the result is divided into two groups: the upper 4 bits and the lower 4 bits, and finally they are expressed in hexa~ decimal. Header: "S" is output. <2> Identifier: § alphanumeric upper case characters + <3> Data: Set data (heading and rate of turn) based on the location of commas and the total number of data. T (Prue) and “M" (Magnet) can be added to the tall of the heading data. “A” (Yes, Valid, Warning Flag Clear) and “V" (No, Invalid, Warning Plag Set) can be added to the tail of the turn rate data. Data of heading and rate of turn is represented as follows. Heading: aaa.a + Use ‘degrees’ as the unit. . The length is fixed (Example: 019.2 for 19.2”) Rate of turn: + Bither degree/minute or degree/second can be se~ lected as the unit. Degree/minute: abbb.b . "a" represents the heading. P side: "= S side: "U" (space) + Mbbb.b" (numeric data) represents the fixed length. Degree/second: abb.b , "a" represents the heading P side: "=" 8 side: “U* (space) + Mbb.b" (numeric data) represents the fixed length. <4> Checksum: Checksum may or may not be used. <5 Terminator: The terminator must be “CR, “LP.” The transmission period can be met in the range of 100 ms to 20s. "AN "Vv" status: These status data are added to the tail of the turn rate data When "GYRO" is selected in the output heading selection, "A" is always added. Only when "ExT" is selected and if any error occurs in the external heading input, "Vv" is output. IM 80B10M07E6-28 (4) Output Settings and Actual output Select the output of heading and rate of turn. <2> Identifier : 'HEEDG" <3> Starting point # Heading ... 4; rate of turn ... 7 <4> Unit of rate of turn : xx.xx* /min Number of data items : 12 <6 T/M symbol iT <> A/V symbol : Available <8> Checksun + Available The following is output for the above settings (heading: 36.72° ; rate of turn:s 12.64" /min): of Tle PLDT Telo 6.5.3 Initial Setting for serial output signal Format (1) output Ports 1 and 2 ‘Transmission # Asynchronous serial transmission ‘Transmission speed 4800 bps ‘Transmission distance : 1.2 km Transmission rate 200 ms(fixea cycle) Character configuration : Start bit ... 1 Data bits ... 8 (7 bits ASCIT) Stop bits ... 2 Parity ... None a aan Pobeb bod ppm !ororot to t st Bt foto} fel START DATA BITS stop BIT BIT IM 80B10M07E,6-29 Data Format (conforms to NYEAQ183) fs [e[onon, oxta| [oma] sno] Cpesninator L Checksum data Checksum ID Data : Data ID (gyrocompass) ‘sender ID Header “0 Checksum All data between '$! and '*" are EXCLUSIVE ORed on a bit-by-bit basis, then the result is divided into two groups: the upper 4 bits and the lower 4 bits. Bach group is then converted into ASCII data, i.e., SUM 1 and SUM 2, for use as checksum. © Data Format [— Positive: Space code 302]101[100|20-2]10-2| 100]10-1]10-2] ooo Heading Rate of turn Unit: Degree Unit: Degree/sec (2) Output Port 3 ‘Transmission 1 Asynchronous serial transmission ‘Transmission speed + 4800 bps Transmission distance : 1.2 kn ‘Transmission rate + 200 msec (fixed cycle} Character configuration : start bit ... 2 Data bits ... 8 (7 bits ASCII) Stop bit ... 1 Parity ... None START DATA BITS STOP IM 80B10M07E,6-30 Data Format (conforms to NwEA0183) 's[#]=[a[o]z| pata +] sun [sum |cr|zF| L terminator L checksum data Checksum ID Data 4 Data ID (true heading) “sender 1D Reader © Checksum ‘All data between but not including the "S" and the "*" are EXCLUSIVE ORed on a bit-by- Dit basis, then the result is divided into two groups: the upper 4 bits and the lower 4 bits. Bach group is then converted into ASCII data, i.c., SUM 1 and SUM 2, for checksum. 102/301]100] , ]ro-1]10-2] , | 7 —————— Heading unit: Degree ‘: True heading (Fixed data) There are no set values for the signal format of the serial input. I™ BOBLOMOTE,a APPENDIX-1 ~ 1 Appendix 1 Speed Error and Speed Error Calibration Chart 1. Speed Error Speed error occurs when a ship equipped with a gyrocompass sails north or south, and the value of the error is a function of the ship's speed, course, and latitude. ‘The error is completely unrelated to the model or type of gyrocompass. ‘The north-seeking tendency of the gyrocompass is well-known, due to the earth's rotation, When a ship equipped with a gyrocompass moves across the earth, the gyrocompass is influenced by the combined movement of the ship's own movement and the earth's rotation. when the ship sails on a northerly or southerly course, the direction of the conbined movement deviates in Proportion to the north=south component of the ship's movement. This causes the gyrocompass to indicate the vertical direction, resulting in an error. Thus, speed error is the difference between the combined movement in the north-south direction and in the east-west direction. 2. Calculating the Speed Error nN ° Latitude K Speed of earth's rota~ tion at the equator (300 (xt) Vt Ship's speed (kt) © + Gyrocompass course 3: Speed error The above figure gives the following equation: RC = Veos8 = Keosp sind Assuming that 8 is small, 8 is expressed in radians as: sind = 8 (radian) = 1/57.38 (unit: degree) 3 = 57.3 Voos@/900c0s0 IM @0B10MO7EAPPENDIX-1 ~ 2 1 Example: When a ship is at the equator (@ = 0) and is sailing due north (8 = 0} at a speed of 30 knots, her speed error is calculated as follows: 8 = 57.3 x 30/900 = 1.91° = 1°54! When angle 0 is between 270 degrees to 90 degrees, the compass indication increases; therefore, the ship's true course 4s as follows: 0° = 1°54" = 358°6" Hf the ship's course is north, the true course is given by subtracting the speed error from the reading of the master compass; if the ship's course is south, the true course is given by adding the speed error to the reading of the master compass. The following examples show how to calculate the speed error from the ship's speed, course, and latitude. The true course is then obtained from the following calibration chart: (1) Determining ship's course using the speed error calibration chart (Table 1) After calculating the value to be modified using the chart (Table 1), modify the value in the positive direction if the ship's course is south; ox to the negative direction if the ship's course is north. Assume that the ship 4s near latitude 40 degrees, the reading of the course 4s 30 degrees, and the ship's speed is 16 knots. Then the value of speed error is 1.1. As the ship is sailing towards the north, the true course is 30 degrees - 1.1 degrees = 26.9 degrees. Now assume that the ship is near latitude 40 degrees, the reading of the course is 150 degrees, and the ship's speed is 16 knots. Since the ship is now sailing towards the south, the true course is 150 degrees + 1.1 degrees ~ = 151.1 degrees. IM 0B10M07E§ a a Speed Error Calibration chart Table 1 Use this chart to obtain the true heading to correct the compass heading. GY) sas833s | aussass | sssusss Sadness | Inmate | saszaze | sansass | eassass samsces | Senaag | attiees | uanases | santas maioess | Saas {| S282 | setzezs | cxazass aeataas | sevaaas E || sesseze | seztece [eeseze mamas | suueces 3s | sessase | seanaze [aeczess sassas | mansaas e =| ~ | sassaze | sosazae | gasssse lanes | saan | s#eeeae | sesneas ie assagae | ouangee . 8 E8RRRSR | 2383: sagnage gegngee | sesages | | saaanas | sanaaue | azeaeee aaanaae | asaaaea 2 | -asecea | sanzses | caavees canvaea | -aaseee ga] 28 R e ® & 8 R IM BOBLOMO7EAPPENDIX-1 - 4 (2) Determining ship's course using the graph (Table 2) <1> Locate the ship's speed (V) on the horizontal axis. <2> Draw a vertical straight line from this point on the horizontal axis until it intersects with the line of the gyrocompass course (@) of the ship. @ is the deviation of the ship's course from north or south. <3> Then, draw a horizontal straight line to the left from the first intersection point until it intersects with the line of the latitude (g) of the ship. This second intersection point gives the speed error. <4> Correct the erzor in the positive direction if the ship's course is south; in the negative direction if the ship's course is north. Assume that the ship is at latitude 40deg North, traveling at 12 knots and the gyrocompass card shows the course to be 320deg. A course of 320deg is 40deg from north to the west. Draw a line upward from the point (a) (V = 12 knots) to obtain the intersection (b) with the line (@ = 40deg). Then draw a horizontal line to obtain the intersection (c) with the line (9= 40deg). This gives a speed error of 0.77 at that time. Therefore, the true course is 319.23deg. IM 80BL0MO7EAPPENDIX-1 = 5 Table 2 Speed Error Calibration Graph ghey 2s bs ob 3 = 3 # i ‘SPEED (Ke) a IM 80B10M07Ea APPENDIX-2.-|1 Appendix 2 Operating Principle 2.1. Gyro A gyro is supported by both horizontal and vertical axes which simulte~ neously are free to turn in any direction and the centers of gravity of the gyro and its supporting frames lie where the axes cross (viz. the gyro and the axes of its supporting frames are free) (Figure 1). If the gyro is given a fast rotation, then even if the stand below is tilted or turned, the direction of the gyro axis will not change. This is because the magnitude and direction of the rotating inertia are preserved provided there is no friction or external force to disturb then. This ability to maintain the magnitude and direction of rotation is the principle of the gyro. Next, if a weight is attached to tip (A) of a rotating axis of the gyro (Pigure 2), then side (A) goes down a little at that moment. at the same time, the gyro continues to turn with that weight attached as it is. This means that the eyro is rotated due to the weight around exis BB' and this produces a torque around the vertical axis which causes the gyzo to turn in the direction of the arrow. Because of this rotation, a torque around axis B is produced and this sup- ports the weight of the weight. Figure 1 This is called "precession" and is a typical characteristic of the gyroscope. Assuming that there is no frictional force at each axis, then the angular momentum of the gyro [(momentum of inertia) x (rotating speed)], the applied torque, and the speed of precession that occurs as a result of the torque are related as follows: (1) Magnitude ; (angular momentum) x (precession speed) segue (2) Direction : Direction of vector is shown in the drawing. IM BOBLOMOTE,APPENDIX-2 - 2 2.2. North-seeking Tendency of Gyrocompass Assume that a weight is attached to just below the supporting frame of the gyro as shown in Figure 3, and that the torque of the gyro, the supporting frame and the weight all lie just below the crossing of each axis and that there is practically no frictional force in either the horizontal or vertical axis. Then, gravity and the earth's rotation cause point A to oscillate in the up/down and left/right drawing an elliptical orbit. The center of this ellipse faces north. If a proper damping device is fitted, the amplitude of the oscillation decreases gradually and eventually stops facing north, This is the gyrocompass, This north-seeking tendency is described in more detail as follows: Figure 4 shows the earth's rota~ tion. At point p which is on latitude g, the component of the earth's angular speed o is given by: ‘Around the vertical axis, esing (rotating movement) Around the horizontal meridian, cose (tilting movement) Put the gyro shown in Figure 3 on this point p with A facing east and B west and with the axis horizontal (Figure 5). The gyzo preserves the first indication as it is. Howev- ex, as the base continues to tilt ‘as time goes by, end A begins to go up waile end B begins to go down relative to the horizontal plane. This tendency produces a torque that restores axis AB to the hori- zontal. The gyro causes precession and, with it tilting, end A turns in the direction that approaches north. The tilting reaches a peak when end A arrives at the meridian IM 80B10MOTE Precession speed Torque ) Angular momentum Rotation angular speed (omega) 1 \ N|_ cos? \ Zi) wsine v Figure 4APPENDIX-2.-_ 3 and end A continues to turn to the west. When end A arrives at a Up point west of the meridian, the tilting of the base begins to work in such a way that end A goes down. = y The torque due to the weight gradu- Horizon, ally decreases and, when end A reaches the west end, the preces- Toown sion stops. Next, end A begins to go down and to turn to the north Figure 6 similarly. Thus, an elliptical movement with north as its center is described as shown in Figure 6. ‘This elliptical movement is reduced to zero when heading north. This movement is utilized for the gyrocompass. When the gyro axis is aligned with the meridian, end A does not go up or down from the horizontal and stops. If, however, end A is tilting in either the east or west direction, end A will go up or down from the horizontal, causes precession and begins to move towards north. when end A stops facing north, it is ina state equivalent to causing the same recession movement in space against the earth's rotating component sing (rotating movement). ‘This is the theory of the north-seeking tendency. In a practical gyrocom pass, however, there are vibrations due to the rolling and pitching of the ship. One gyro is not sufficient to withstand such external movenents and ensure stable operation, Therefore, two gyros are connected by a special mechanical construction such that when any external force is applied to the two gyros, each gyro causes precession. Thus, for the same reason that a force is produced by supporting a weight, these precessions cancel out any external force, thus avoiding errors due to vibration. ven in this case, the direction of the combined angular momentum remains constant and nothing affects the north-seeking tendency. Since the north-seeking force of the gyro is very small and delicate, the frictional forces of the horizontal and vertical axes must also be very small so that they do not disturb the north-seeking force. TM BOBLOMOTE,APPENDIX-2 - 4 2.3. Gyrocompass Error 2.3.1 Speed Error Refer to Appendix 1 "Speed Error and Speed Error Carribration Chart." 2.3.2 Acceleration Error When a ship increases or decreases sailing speed or changes course, a torque is added to the gyrosphere because the center of gravity of the gyrosphere is located below its own center @f buoyancy. This causes the north-seeking force of the gyrosphere to vary, and the value of this variation depends on the position of the center of gravity. As the value of the speed error also varies according to how the ship changes course and speed, it is possible to adjust the position of the center of gravity so that the variations in the indication of course and speed change offset each other. In this gyrocompass, the center of gravity of the gyrosphere is well designed so that the acceleration error is zero, (As a result, when ‘the damper of the gyzosphere is removed, the oscillation period is approxi- mately 85 minutes.) 2.3.3. Rolling Error If the swinging periods of the gyrosphere around the north-south axis and the east-west axis differ greatly and the gyrosphere is always swung by the ship's rolling and pitching, an error occurs depending on the period and dizection (against the gyrosphere) of the rolling and pitching. To prevent this error, the gyrosphere is constructed with two gyros and the periods around the north-south axis and the east-west axis are mace similar. Moreover, to stabilize the gyrocompass indication, the container of the gyrosphere is shielded from the continuous swings by a damper fitted to the Suspending mechanism of the container. ih s0B10N078APPENDIX-3 ~ 1 Appendix 3 Function Block Diagram Gyro contrel box Im 80B10NO7Appendix 4 Wiring Diagrams 4.1. Master Compass Wiring Diagram ZERO o ort ost os2 osa oz a7 28 30 ~ 31 360x FOLLOW-UP SynceRo MOTOR PHoTOSENSOR Im 80510M07EAPPENDIX-4 - 2 4.2 Control Box Wiring Diagram Bock no | 23 TT SR IM 80BLOMO7E,APPENDIX~S + 3 4.3 Block Diagram for Control Box alg aoteena TM 80B10MO7E,ABPENDIX~4 - 4 Interface Circuit Diagram (Vol.1) Liteon Peasy IM 80B10M07E, av ASSYVeHeADAPPENDIX~4 - 5 (vou.2) “wore Seva Ren SSVI 2 arid [Fe | Rel ALi, et IM 80810M078,APPENDIX-4 - 6 4.9 Control Box/Master Compass Wiring Diagram : oS : prety La TH 80B10M07E,0 APPENDIX~4 ‘~.7 4.6 Repeater Compass Wiring Diagran SETTING HOLE FoR = =@ SHADOW PIN es 4-99 note PLUG FOR CARD CORRECTION SETTING HOLES FOR HORIZONTAL BRACKET 195) OIMMER SETTING HOLES FOR TILTING BRACKET | rt ctano 20c ‘connector(pus) FP ay aceoniid REPEATER COMPASS CONNECTION BOX vRa pee 5__srom} to () 5 “BLACK RED GREEN YELLOW MEAS a | | IM 80BLOMOTE,Appendix 5 Component List ‘The gyrocompass components and their part numbers are listed below. When ordering a component or if a problem occurs in a component, please contact our service department with the part number. (1) Master Compass NO} DESCRIPTION pwano. |No| — pescriprion | pwGNo. © |comsiner ni vain |e | Fromeover VsI09Nx @ | Rubberisoitor vsi0kt —|@ | Dimmer volume A230 RV ® |ox ysi0eyu | | Connector Uppen | asis71c © fring vaioxv [ap | Top cover velop, @ [Bor yo«2svu [ee | thumb nut VsI09NR @ | set screw vsiooxy [03 | Bracket igh vt0oNz © | stopper vaiooxx fab | Bracket Let vsi0oMT I™ BOBLOMOTE,APPENDIX-§ - 2 (2) Follow-up Mechanism TH 80B10M07E, No] pescrirrion | pwono. {Nol vescrieion | DwGNo, & [Poimer vias | @| Lampe vunve @ | Graduates crete iS5A055- Lp] termina book AMsoerT |@ | Bracket ‘YB109LS. 2] Brush holder V8109LA © | senor verona |e] Gearmectanism | {G804CO29- (@ | cea veioo.t | | Base ae 109ME }® | Slip ring ‘V8109LQ_ B] Slit plate) ‘V8109LU [spacer varooe | op] Syzctromotor ‘ooo © [omer mouning piae | vei0no | ap] Synelvomorer goo 134M ® | Socket ALIT8VE(3) Container Unit APPENDIX-5:~, 3 DESCRIPTION | DWG NO. |NO| DESCRIPTION | DWG NO. @|Container vsiosJT | © | Stopper Vs1097M @®|Gimbal ring assembly |V8109QH | @|Cap ve1097u @®|Center pin vs10sQ7 | ® | Cover /v8109J8 @|Pin shaft vs109Qe | @|Cap V8109LC ©| Washer @| Connector (Lower) | M8208 © | Spring washer | Air chamber valoskW @|Nat ®@| Bott y9620Yu ©] O-ring V8109NU | ®| Gyro sphere KT005 IM 80B10MO7EAPPENDIX-5 - 4 (A) Control Box NO} DESCRIPTION DWGNO, |No| DESCRIPTION | DWGNO. | a ype V8II0KK | @| Fuse (100, 100. 115V) | ALIO7EK Bena s vanioKs Fuse (220¥9 AIIO6EK @ | Lock Fo123E. | @| Fuse (2A) ANIOSEK }@ | Front panel varios | @| Fuse (ISA) AIIOBEK @ | Packing Josue @| Noise filter ALLISEN, @| Display paner ce) | var1oKw | @| Noise iter AMMEN ~ Display panel PCB) — | VB1IOKV | @| RIF assembly.PCB) | VBIIOAN Display panel (PCB) | VBIIOKU | | Plate vsil0KB apmmeassy ce) |vsii0nc @| Poverun | vsnioco b/MM3 ASSY (PCB) V81IOAE, ai} Fewernssembly V8110AS }@® | Terminal block VBI10AC >| eerrcey | V8!0BR | swich avast | ep] Remo minal vsiioag @| Plate Tvertois | «| Doorstopper V8il0LG Clamp 8200RB IM 80B10M07EAPPENDIX-5.—, 5 No] DEscrirrion pwono. |No| —vescrirtion | pweno a [Rgsssemy bom Vsriony | | transfomer ve1108Q | | Shietd cover V8IIQE ® | Terminal board AL497IT @ [Pant cover variant @@ Wen the @ plate is renoved: IM 80B10MO7EAPPENDIX-6 > 1 Appendix 6 Certificate for Installation Adjust Completion After completing the installation adjustment, the manager responsible for installation should fi11 the items required on the "certificate for installation adjustment completion" shown on the next page. Return a copy of this certificate to our company (the original should be kept in the ship.) As a rule, warranty becomes effective at the tine of receiving this copy of certificate. IK 80B10MO7EAPPENDIX-6 ~ 2 Certificate for Installation Ajustment Completion YDK Work No. ‘Yokogawa Denshikiki Co., Ltd. Gyrocompass Model: CMZS00 Ship name: Ship owner: Dockyard/Ship No. ‘Type of ship/Gross tonnage: [Equipment Record ] () Serial number Master compass: (NO.1) Control box: (NO.1) Date of installation adjustment: From To To of adjustment Person in charge of installation: ‘Company in charge of installation: (x02) (oa) (N02) Yes/No DC backup: (NO.1)_ Yes/No Switching unit: (Model) (Gerial Noy record Gyrophere NOLI Master NO? Master Remar String A A [rete eae 15 “PHC” Racing A 1 [Rete to code 15 “PHC searing v v Phase voltage eansing v v Seating ine ‘a * Siaonary sae for easing scurcy dex ae Insaliatiooreror Refer to cade 37 *$ 6° Followup gala Rete to code 35 7.7 and code 38°05" cyrophere Numer Software Veron Number Refer o code 192" uh eoB10No7e@) VO signal form generation 1) Hardware parameter setting (Common to input and output) APPENDIX-6 3 ‘aud te [ Datbitenath | Parity | Stop bit enh Po Port 2) Software parameter setting (input data) Ponto, | Went} stating point | Checksum | TEMS | yg Exiting peed feomtt Spent Location 3) Software parameter setting (output deta) omer Type | teniter | ordaa | $8 | checksum | Tesmision | Exiting oT oie eriod | format Record wet | Record? Records ext | Reso? Revond 3 Record wt [Resort Pont? Resort | ext | Record? Record 3 Record g wer | Resore2 Resor 3 ore Record | ext [Record Reward 3 ‘This is to certify thatthe installation adjustment work has been completed Date: Signature of captain: Signature of dockyard manager responsible for installation IM 80B10MO7E