Simrad GC80 Instruction Manual
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Simrad GC80 Instruction Manual

Dual gyro compass
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INSTRUCTION MANUAL
SIMRAD GC80/85
DUAL
Gyro Compass
20221537D
English

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Summary of Contents for Simrad GC80

  • Page 1 INSTRUCTION MANUAL SIMRAD GC80/85 DUAL Gyro Compass 20221537D English...
  • Page 2 Simrad GC80/85 Dual Gyro Compass Document revisions Date Written by Checked by Approved by 13.02.04 15.03.05 05.12.05 10.05.07 Document history Rev. A First issue. Rev. B Updated according to new software release (Master compass: V.1.03, Control unit: V.1.04). Rev. C New procedure for how to adjust true heading, updated dimensions for remote panel, other minor updates to text throughout the manual.
  • Page 3 About this manual This manual is intended as a reference guide for installing, operating and maintaining Simrad GC80 and GC85 Dual Gyro compasses. The manual assumes that the operator is a qualified ship officer, or is under supervision of a qualified person.
  • Page 4 8. Drawings Outline drawings and wiring diagrams for the GC80/GC85 Dual gyro system. 9. Spare part list List of all standard and optional units that are used in the GC80 and GC85 Dual gyro systems. 10. Terminal layout List of all terminal pins and terminal labelling with details on GTERM and DTERM boards in the GC80 Control unit.

  • Page 5: Table Of Contents

    INSTRUCTION MANUAL Contents SYSTEM OVERVIEW............1 Introduction...............2 Precaution in use ..............3 System components............4 Bearing repeaters ...............4 USER INTERFACE ..............5 General ................6 Master compass control panels ..........6 POWER button ..............6 Display ................6 GYRO button ..............7 EXT button ..............7 DISP button ..............7 SET button ..............7 ACK/ENT button ............7 Arrow buttons...............7 Alarm indicator .............7...
  • Page 6 Power supply .............. 47 Grounding the units ............48 Dip-switch and jumper settings .......... 48 Activating the control unit for GC80 or GC85 system ..48 Activating an external heading sensor ......50 Activating the pendulum function ........53 Installing the Sensitive elements ........54 Verifying the element’s tilt angle ........
  • Page 7 Drawings included ............82 SPARE PART LIST............89 GC80 Dual Gyro system ............ 90 GC85 Dual Gyro system ............ 90 Optional equipment, GC80/85 Dual system ......91 10 TERMINAL LAYOUT ............93 10.1 GTERM board ..............94 TB1 ................94 TB2 ................96 10.2 DTERM board ..............
  • Page 8 Simrad GC80/85 Dual Gyro Compass 11 DIP SWITCH SETTINGS ..........101 11.1 General ................. 102 11.2 GPOWER board 1 and 2 ........... 103 Jumper settings on GPOWER boards ......103 11.3 GTERM board ..............104 Jumper settings on GTERM board ........ 104 11.4 SCC board 1 and 2 ............

  • Page 9: System Overview

    SYSTEM OVERVIEW SYSTEM OVERVIEW This section provides an overview of GC80 and GC85 Dual Gyro systems and their components. 20221537 / D...

  • Page 10: Introduction

    Master compass and in the control unit. Note! A GC80 or GC85 system is identified by the labelling on top of the Master compass’ case as shown on the figure below. The labelling on the control unit is identical for both gyro systems.

  • Page 11: Precaution In Use

    If this happens, any external equipment depending on the bearing output from GC80/GC85 should be operated manually or switched to other bearing sensors. To assure long time safe operation, the following precautions...

  • Page 12: System Components

    Note! For details, refer TECHNICAL SPECIFICATION, page 75. 1.4 Bearing repeaters GC80 and GC85 outputs step and serial signals used for repeaters. Even when the gyro compasses are supplied by the emergency power supply, the connected repeaters will be driven by the repeater backup function included in GC80/GC85.

  • Page 13: User Interface

    USER INTERFACE USER INTERFACE This section gives an overview of the control panels in the GC80 Dual Control unit. 20221537 / D...

  • Page 14: General

    Simrad GC80/GC85 Dual Gyro Compass 2.1 General The Dual Control unit includes 3 control panels: one for each gyro compass, and one change over panel used for displaying and controlling the dual gyro system. From the Dual control unit each gyro compass may be operated individually, or the system may be operated as one dual system.

  • Page 15: Gyro Button

    USER INTERFACE GYRO button Used for selecting the gyro compass as the active heading dvol reference source. The status lamp is lit to indicate that the gyro system is active. Refer Selecting active compass, page 25. EXT button Used for selecting the external heading source as the heading reference.

  • Page 16: Change Over Panel

    Simrad GC80/GC85 Dual Gyro Compass 2.3 Change over panel This panel is used for switching between available compasses, for displaying bearing for the gyro compasses, and alarm information. The panel is also used for setting the alarm difference limit. The panel includes the buttons described in the following pages.
  • Page 17 USER INTERFACE GYRO no.1 and no.2 buttons Used for selecting master compass no.1 or no.2 as the active klKN klKO heading reference source. Active compass source is selected by pressing one of these buttons and the buttons simultaneously. The status ACK/ENT lamp is lit to indicate which master compass that is active.
  • Page 18 Simrad GC80/GC85 Dual Gyro Compass THIS PAGE INTENTIONALLY LEFT BLANK 20221537 / D...

  • Page 19: Operation

    OPERATION OPERATION This section describes the main operating procedure used when operating the GC80/GC85 Dual Gyro system. 20221537 / D...

  • Page 20: General

    58 onwards. 3.2 System Start-up and Shut-down A GC80/GC85 gyro compass is usually left with power on. If the compass has to be shut down and restarted, the procedures in the following sections should be followed.
  • Page 21 OPERATION If the rotor was not completely stopped when the POWER dvol button was pressed, a rotor break function will be activated to stop the rotor. Active rotor break is indicated with flashing display. When the turning stops, the sensitive element starts rising horizontally and the compass rotates 360°...

  • Page 22: Turning A Gyro Compass Off

    Simrad GC80/GC85 Dual Gyro Compass Turning a gyro compass OFF Press the button on the Control panel for the POWER mltbo master system that is to be turned OFF. The light in the button will be switched off. POWER Repress the...

  • Page 23: Starting And Stopping The Dual Function

    PCC and SCOIF boards: HDM220 P:V1.02 C:V1.02 followed by: HDM220 by Simrad and then showing heading for gyro compass no.1 and no.2. 1-GYRO:123.4° A* 2-GYRO:123.4° Verify that heading 1 and heading 2 is in according with the heading displayed on the gyro compass’ control panel.

  • Page 24: Adjusting Display Illumination And Contrast

    Simrad GC80/GC85 Dual Gyro Compass 3.3 Adjusting display illumination and contrast Display illumination on control panels The display illumination and the light intensity in the indicator lamps are set separately for each panel, and is increased or decreased in 5 steps by pressing the arrow buttons.

  • Page 25: Automatically Turning Off The Light In Change Over Panel

    OPERATION Automatically turning OFF the light in Change over panel The back light in the change over panel may be automatically turned OFF after a set time when it has been used. Press the button on the change over panel until DISP - PARAMETER SET -: is displayed in the display’s upper afpm...

  • Page 26: Displaying Present Settings For Each Compass

    Simrad GC80/GC85 Dual Gyro Compass 3.4 Displaying present settings for each compass When pressing the button on the GC80 Control unit, the DISP system will loop through a display sequence showing present settings for the system. The sequence will be depend on whether an external compass is connected or not.

  • Page 27: Displaying Settings With External Sensor Connected

    OPERATION Display state Display Description - Rate of turn in °/min afpm - Rate of turn indication press on DISP button - Error codes (up to 4) afpm - Error indication press on DISP button afpm dvol - True output bearing press on - Active compass DISP button...

  • Page 28: Confirming Present Settings For Each Compass

    Normal operation 3.5 Confirming present settings for each compass After the GC80/GC85 is configured according to the System start-up and software configuration, described in page 58 onwards, it should not be necessary to adjust any settings when operating the gyro compass.

  • Page 29: True Bearing

    Speed The GC80/GC85 gyro compass calculates bearing based on the speed and latitude information that is input to the gyro as speed source. Any error in speed input will therefore cause incorrect true bearing from the gyro compass.
  • Page 30 Speed error correction All gyro compasses will generate a heading error caused by the vessel speed and earth rotation. GC80/GC85 calculates this error based on latitude and speed input information, and corrects automatically the bearing signal output. If no speed information is available, the gyro compass will output a heading error either westwards or eastwards depending on the vessel’s course.
  • Page 31 OPERATION VESSEL HEADING (degree) 20 10 LATITUDE (degrees) 20221537 / D...

  • Page 32: Pendulum Function

    Simrad GC80/GC85 Dual Gyro Compass 3.6 Pendulum function GC80/85 software includes a pendulum function that enables the heading to be changed by 180°. The heading change is activated by closing a potential free contact connected between TB1, pin 71 and 72 on the GTERM board in GC80/85 control unit.

  • Page 33: Selecting Active Compass

    OPERATION 3.7 Selecting active compass If an external heading sensor is connected to GC80/GC85, it is possible to switch between gyro and external heading sensor as active steering sensor. The gyro system will normally be used with the gyro compass selected as active compass. An external heading sensor should only be used as active compass when the gyro compass not is working properly.

  • Page 34: Alarm Messages

    Caution! When an alarm is generated, bearing information from the GC80/GC85 may not be present or may have large error. Any equipment using bearing information from the gyro compass should therefore immediately be operated according to the equipment’s emergency operating procedure.

  • Page 35: Alarm Messages On The Change Over Panel

    OPERATION Alarm messages on the change over panel The alarm codes for the dual system will be displayed one at a time in the change over panel’s display. The alarm codes will be displayed after the data lines when the Arrow Down button is pressed, and will only be available as long as the alarm situation is present.
  • Page 36 Simrad GC80/GC85 Dual Gyro Compass Buzzer silence only By installing an external acknowledging switch, it is possible to silence the buzzer while the alarm code remains in the display. Install the switch to the control unit according to the Wiring diagram on page Error! Bookmark not defined.

  • Page 37: Maintenance

    MAINTENANCE MAINTENANCE This section holds descriptions for maintenance procedures that should be performed by the system operator. The section also includes a detailed description for how to replace the sensitive element and the fuses. 20221537 / D...

  • Page 38: General

    Simrad GC80/GC85 Dual Gyro Compass 4.1 General All units in the GC80 system are designed for optimum safety and reliability. However, a limited amount of preventive maintenance should be performed to verify safe operation and durability. If any strange motion, smell, sound or heat is generated from any unit, a Simrad dealer shall be contacted.

  • Page 39: Preventive Maintenance Intervals

    The Sensitive element should only be replaced by authorized Simrad personnel. Note! A special tool (Simrad part no. 44174449) is required when installing the Sensitive element. This tool is delivered together with the gyro, and the sensitive element should not be installed without using this tool.
  • Page 40 Simrad GC80/GC85 Dual Gyro Compass 4. Remove the four screws securing the Sensitive element. Tilt the Horizontal ring to the side where the plug is located, and carefully remove the element from the compass. 5. Place the defective Sensitive element in its original package, and put the rubber tube on top of the element.
  • Page 41 MAINTENANCE 9. Position the Sensitive element on the Horizontal ring by putting the assembly jigs into the holes as indicated on the figure below. Observe the rings on the jigs to ensure proper positioning. Insert and fasten the two screws in the other holes.
  • Page 42 Simrad GC80/GC85 Dual Gyro Compass 10. Replace the assembly jigs with the two remaining screws after placing the ground wire as shown on the figure. 11. Loosen the screw on the plug-holder on the Sensitive element, and lift the holder 2-3 mm upwards.

  • Page 43: Verifying The Element's Tilt Angle

    - GC80: 15° to 19° - GC85: 18° to 22° The tilt angle is indicated on the figures below. Max and min tilt angle for GC80 std system Max and min tilt angle for GC85 High Speed system Note! The tilt angle shown above is correct for cold condition. The...

  • Page 44: Parameter Updates

    Parameter updates When a sensitive element is replaced, parameters for the new element have to be loaded into the GC80 Control unit before the gyro compass is started. This is done from the Extension menu as described below. 1. Enter the Extension menu by pressing and holding the button and the buttons simultaneously for at appr.

  • Page 45: Balancing The Horizontal Ring

    MAINTENANCE 7. Press the button again to return to main category A1, and then press the button to go to A2 main category. DISP 8. Press the button, and enter values for 2.1.o and 2.3.h as described above. 9. Press the button again to return to main category A2, and then press the button until main category A7 is...

  • Page 46: Replacing The Fuses

    Simrad GC80/GC85 Dual Gyro Compass 4.8 Replacing the Fuses WARNING Before a fuse is replaced, disconnect the respective power for the damaged fuse. Use the procedures described in the following pages when replacing the fuses. Master Compass Fuse F1 is located inside the fuse holder in the front of the Master compass.

  • Page 47: Dual Control Unit

    MAINTENANCE Dual Control unit For location of the fuses, refer to the drawing on next page. Main fuses FUSE NO CAPACITY TB-NO SIGNAL DESCRIPTION F101 6.3A TB101 Gyro no.1 Main power supply F102 TB101 Gyro no.1 Emergency power supply F201 6.3A TB201 Gyro no.2 Main power supply...
  • Page 48 Simrad GC80/GC85 Dual Gyro Compass SW1 AND MAIN POWER F201 SWITCHES (6.3A) MASTER COMPASS F202 1 AND 2 (20A) F101 MASTER (6.3A) COMPASS NO.2 F102 (20A) MASTER COMPASS NO.1 DTERM GTERM BOARD BOARD WARNING Make sure that the main power switches SW1...

  • Page 49: Installation

    INSTALLATION INSTALLATION This section is a reference guide for correctly installing and configuring the GC80/85 Gyro Compasses. 20221537 / D...

  • Page 50: Unpacking And Handling

    Simrad GC80/GC85 Dual Gyro Compass 5.1 Unpacking and handling A GC80/85 Gyro compass consist of the following units: - 2 Master compasses - 2 Sensitive elements - Dual control unit - Spare part kit - Mounting jigs - Documentation The sensitive element is shipped from the factory packed separately in a carton box to protect it from excessive shock and vibration.

  • Page 51: Control Unit

    - 4 mounting screws - 1 blind cover In addition to this kit, optional control panel cables must be ordered. The cables are available in three different lengths: GC80/85 REMOTE PANEL - 5m (part no. 44170736) - 10m (part no. 44170744) - 15m (part no.
  • Page 52 Simrad GC80/GC85 Dual Gyro Compass Loosen the 4 nuts holding the control panel, and remove the panel. These nuts are to be re-used when fastening the control panel to the flush mounting panel. Insert the control panel in the flush-mounting kit from the front side as shown on the figure.

  • Page 53: Master Compass

    INSTALLATION Master compass Select a mounting location where the deck is horizontally, flat and with little vibration, and where the pitch/roll motion is as small as possible. It is also important to select a mounting location with sufficient space for installation and service. Refer dimensional drawing, page 84.

  • Page 54: Cabling

    Simrad GC80/GC85 Dual Gyro Compass Remove strips and foam rubber from the chock absorbers, together with all strips used for securing moving parts during transportation. Note! The foam rubber should be kept for re-use if the Master compass has to be sent to factory for service! 5.3 Cabling...

  • Page 55: Power Supply

    INSTALLATION Power supply GC80/GC85 has to be supplied with 110 or 220V AC. When delivered from factory, the system is set up for 220V AC. If the system is to be supplied with 110V AC, a strap on both GPOWER boards has to be set according to the figure and the table below.

  • Page 56: Grounding The Units

    GC80/85 system. 2 switches have to be set for configuring the Control panels to match type of gyro system (GC80 or GC85), while 3 switches have to be set if an external heading sensor is connected to the system.
  • Page 57 (LOCATED UNDERNEATH THE GTERM BOARD) SCIOF BOARD SCC board GC80 system GC85 system All outputs are selectable for 1, 5, 10 or 50Hz. Refer dip switch and jumper settings on page 101 onwards. Note! A GC85 system is recommended to be set for 50Hz output!

  • Page 58: Activating An External Heading Sensor

    Simrad GC80/GC85 Dual Gyro Compass Activating an external heading sensor If an external heading sensor is connected to the GC80/GC85, the following switches have to be set to enable the external heading sensor: - dip switch no.5 on S1 on both SCC boards - switch no 1 (and 2) on S1 on the SCOIF board - switch no.3 (and 4) on S1 on the PCC board (on the back...
  • Page 59 INSTALLATION SCOIF board For location of the board, refer the figure on page 49. No external sensor Active external sensor 20221537 / D...
  • Page 60 Simrad GC80/GC85 Dual Gyro Compass PCC board PCC BOARD PCC board No external sensor Active external sensor 20221537 / D...

  • Page 61: Activating The Pendulum Function

    INSTALLATION Activating the pendulum function If an external switch is connected to GC80/85 to operate the pendulum function, dip switch no.4 on S2 on the SSC boards has to be set to activate the pendulum function. BOARD 1 BOARD 2...

  • Page 62: Installing The Sensitive Elements

    Master compasses according to the description below. Note! A special tool (Simrad part no. 44174449) is required when installing the Sensitive element. This tool is delivered together with the gyro, and the sensitive element should not be installed without using this tool.
  • Page 63 INSTALLATION ASSEMBLY JIG WITH 1 CIRCLE ASSEMBLY JIG WITH 2 CIRCLES Replace the assembly jigs with the two remaining screws. Locate the ground wire on one of the screws as shown on the figure. Loosen the screw on the plug-holder on the Sensitive element, and lift the holder 2-3 mm upwards.

  • Page 64: Verifying The Element's Tilt Angle

    - GC80: 15° to 19° - GC85: 18° to 22° The tilt angle is indicated on the figures below. Max and min tilt angle for GC80 std system Max and min tilt angle for GC85 High Speed system Note! The tilt angle shown above is correct for cold condition. The...
  • Page 65 INSTALLATION If the tilt angle is incorrect, weight disks must be adjusted by moving weights from one side to the other. After adjustments, wait for 2 minutes for the oil to set before the tilt angle verification is repeated. Caution! The sensitive element must have equal number of weight disks on both weight points on the tilting side (north and south side)!

  • Page 66: System Start-Up And Software Configuration

    Control panel. The following start-up sequence will mltbo take place: - Control unit type (GC80 Std, or GC85 HSc), SW version for Control unit and for Master compass is displayed in rapid succession. Examples of display text are shown...
  • Page 67 GYRO to steady light. The GC80/GC85 will be settled within 3 hours when started with a deviation angle less than 5°. With a larger deviation angle, the compass will be settled within 4 hours. Configuring the sensitive element Each Sensitive element is tuned to its Master compass before it is shipped from the factory.
  • Page 68 Simrad GC80/GC85 Dual Gyro Compass Press the button again to select sub-category 1.2.F, DISP and use the arrow buttons to increase or decrease the parameter value until the value corresponds with the parameter for the new sensitive element. Confirm the entry by pressing the button.
  • Page 69 INSTALLATION Setting the Latitude input source When the system is configured as described in Configuring the sensitive element page 59 onwards, the latitude input source can be changed as described below. Press the button until the display shows latitude DISP value.
  • Page 70 Simrad GC80/GC85 Dual Gyro Compass Setting the Speed input system When the system is configured as described in Configuring the sensitive element page 59 onwards, the speed input source can be changed as described below. Press the button until the display shows speed value DISP and speed input source.
  • Page 71 GC80. This value is entered by using the Extension menu as follows: 1. Activate the Extension menu by pressing and holding the...

  • Page 72: Configuring The Dual Function

    Simrad GC80/GC85 Dual Gyro Compass 4. Use the arrow buttons to increase or decrease the offset parameter value. Note! To correct for +1.5°, press the Arrow Up button until the display shows 1.5°. To correct for -1.5°, press the Arrow Down button until the display shows 358.5°!

  • Page 73: Setting The Heading Difference Alarm

    INSTALLATION The example to left below shows a display where the gyros not are settled (runtime less than 3 hours, indicated with an S). In the example to right, the gyros have run for more that 3 hours. 1-GYRO:123.4° SA* 1-GYRO:123.4°...
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  • Page 75: Advanced Settings

    ADVANCED SETTINGS ADVANCED SETTINGS This section gives an overview of the Extension menu, how to enter the menu and how to change parameter values. 20221537 / D...

  • Page 76: General

    The Extension menu holds internal parameters and communication parameters required to achieve the best possible heading accuracy on the GC80/GC85 Gyro compass. The Extension menu is grouped in 8 main categories, named A- 1 through A-8. Each of these main categories has again several sub-categories where parameter values may be set.

  • Page 77: The Extension Menu Overview

    ADVANCED SETTINGS MAIN MENU CHANGE / CLEAR PARA- METER VALUE afpm afpm afpm afpm NEXT MAIN NEXT SUB CATEGORY CATEGORY 6.3 The Extension menu overview Main Default Parameter/description Range Category Category value 1.1.U Damping gain 1.00 0.00 – 2.00 Determines the damping (damping operation in north- seeking motion = half cycle attenuation) and actually represents a coefficient (ratio) to the standard value stored in the software.
  • Page 78 Simrad GC80/GC85 Dual Gyro Compass Main Default Parameter/description Range Category Category value 1.6.t (θ) Theta offset (°) 0.00 -3.00 – 3.00 Offset value (°) around the horizontal axis of gyro sphere (rotor axis) and the sensitive element. 1.7.G X signal pickup gain (v/°) 2.32...
  • Page 79 ADVANCED SETTINGS Main Default Parameter/description Range Category Category value 2.1.o Bearing offset A (°) 0.0 – 359.9 Offset value included in the “master bearing” and used for correction of fixed error (°). If the master compass not can be mounted parallel to the vessel’s fore-after line, this parameter is used to compensate for a small mounting error.
  • Page 80 Simrad GC80/GC85 Dual Gyro Compass Main Default Parameter/description Range Category Category value A-2 cont. 2.9.G Display/setting of GPS connection bE or Non The following abbreviations are used: GPS connected Non: No GPS connected NOTE: When this value is set to “Non”, GPS can not be selected as the vessel’s input for speed and...
  • Page 81 ADVANCED SETTINGS Main Default Parameter/description Range Category Category value 4.1.C GPS serial data character length 8 or 7 4.2.P GPS serial data parity bit Non, Even, 4.3.S GPS serial data stop bits 1 or 2 5.1.C LOG serial data character length 8 or 7 5.2.P LOG serial data parity bit...
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  • Page 83: Technical Specification

    TECHNICAL SPECIFICATION TECHNICAL SPECIFICATION This section lists all specifications for GC80/85 gyro compass. 20221537 / D...

  • Page 84: Accuracy

    Follow-up speed..............> 75°/sec Gimbal freedom ........for both roll and pitch: ±45° Range of speed correction: GC80 ....0-50 knots / latitude (0° - +70°) GC85 ....0-70 knots / latitude (0° - +70°) Main power supply: ....100/110/115/200V AC, 50/60Hz Power supply for alarm and back-up: ....

  • Page 85: Input Specification

    TECHNICAL SPECIFICATION 7.3 Input specification Serial input signal (GPS) Circuits:..............1 Electrical: ....RS422/MNEA0183/Current loop Baud rate: ............. 4800 bps Data bits: ............8 bits Parity:..............None Stop bits: ..............1 Freq.: .............. 1 – 5Hz Input format: $--GGA,x,xxxx.xx,N,xx.x,E,x,~*hh<CR><LF> $--GLL,xxxx.xx,N,xxxx.xx,E,*hh<CR><LF> $--VTG,xx,T,xx,M,xx.x,N,xx,K*hh<CR><LF> Serial input signal (External heading) Circuits:..............1 Electrical: ........RS422/NMEA0183 Baud rate: ..........

  • Page 86: Output Specification

    GC85 ............. 38400 bps When Gyro Data bits: ............8 bits is selected Parity:..............None Stop bits: ..............1 Transmit freq.: GC80 ..........1, 5, 10, 50Hz GC85: ..........1, 5, 10, 50Hz Output format: Data no.1 $ HEHDT,xxx.x,T*hh<CR><LF> Data no.2 $ HEROT,-xxx.xx,A*hh<CR><LF>...

  • Page 87: Physical Dimensions

    Height: ..............438 mm (17.2”) Width: ..............340 mm (13.4”) Depth: ..............340 mm (13.4”) Weight: ..............23 kg (51lbs) GC80 Dual Control Unit Height: ..............561 mm (22.1”) Width: ..............467 mm (18.4”) Depth: ..............182 mm (7.2”) Weight: ..............23kg (51lbs)

  • Page 88: Power

    Simrad GC80/GC85 Dual Gyro Compass 7.6 Power GC80/GC85 Master Compass Voltage input: ........Supplied from Control unit GC80 Dual Control Unit Voltage input: ............110/220V AC Backup voltage: ............... 24V DC Power consumption per Master compass (incl. Master compass): Starting........... 1.5A at 100V AC Running:.........

  • Page 89: Drawings

    DRAWINGS DRAWINGS This section contains outline drawings showing mechanical dimensions of the different GC80/GC85 units, together with wiring diagrams for the gyro system. 20221537 / D...

  • Page 90: Drawings Included

    To scale drawings are available upon request. The following wiring diagrams are enclosed: Name Drw. no Rev. GC80/85 Gyro Compass, Dual system. Wiring N3-710188 diagram (page 1 and 2) Note! The original signed drawings are recorded at Simrad Egersund. 20221537 / D...
  • Page 91 DRAWINGS 20221537 / D...
  • Page 92 Simrad GC80/GC85 Dual Gyro Compass 20221537 / D...
  • Page 93 DRAWINGS 20221537 / D...
  • Page 94 Simrad GC80/GC85 Dual Gyro Compass 20221537 / D...
  • Page 95 DRAWINGS 20221537 / D...
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  • Page 97: Spare Part List

    SPARE PART LIST SPARE PART LIST This section includes part numbers for all standard and optional units that may be included in a GC80 and GC85 gyro system. 20221537 / D...

  • Page 98: Gc80 Dual Gyro System

    27101674 GC80 Master compass 44174027 GC80 Sensitive element 27101708 GC80 Dual Control unit 20221537 GC80/GC85 Dual gyro compass Instruction manual 44174449 Special tool required when installing the Sensitive element 9.2 GC85 Dual Gyro system PART NO DESCRIPTION 27101682 GC85 Master compass...

  • Page 99: Optional Equipment, Gc80/85 Dual System

    SPARE PART LIST 9.3 Optional equipment, GC80/85 Dual system PART NO DESCRIPTION GC80 Flush mounting kit in Simrad design for remote 27101757 installation of operating panel GC80 Extension cable 5 meter for remote installation of 44170736 operating panel normally mounted in Control unit...
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  • Page 101: Terminal Layout

    TERMINAL LAYOUT TERMINAL LAYOUT This section includes tables which list all terminal pins and terminal labelling on GTERM and DTERM boards in the GC80 Dual Control unit. The tables include detailed description for each terminal. 20221537 / D...

  • Page 102: Gterm Board

    Simrad GC80/GC85 Dual Gyro Compass 10.1 GTERM board PIN NO NAME DETAILS Master compass power supply (24V DC) Master compass power supply (24V DC common) Master compass inverter alarm (over current) Master compass inverter alarm (over voltage) Master compass inverter alarm (common) Control unit –...
  • Page 103 TERMINAL LAYOUT PIN NO NAME DETAILS 10TSC Serial signal common 10R24- Serial repeater power supply, -24V DC 10R24+ Serial repeater power supply, +24V DC GRX+ GPS serial signal input GRX- GPS serial signal common LRX+ LOG serial signal input LRX- LOG serial signal common ESRX+ External sensor serial signal input...

  • Page 104: Tb2

    Simrad GC80/GC85 Dual Gyro Compass PIN NO NAME DETAILS EACK+ External acknowledge signal input EACK- BZSP+ Buzzer stop signal input/Pendulum BZSP- PIN NO NAME DETAILS 1TX+ Serial signal output (IEC61162-1 ed.2/-2) 1TX- 1TSC Serial signal common 1R24- Serial repeater power supply, -24V DC...
  • Page 105 TERMINAL LAYOUT PIN NO NAME DETAILS 5R24- Serial repeater power supply, -24V DC 5R24+ Serial repeater power supply, +24V DC 6TX+ Serial signal output (IEC61162-1 ed.2/-2) 6TX- 6TSC Serial signal common 6R24- Serial repeater power supply, -24V DC 6R24+ Serial repeater power supply, +24V DC 7TX+ Serial signal output (IEC61162-1 ed.2/-2) 7TX-...

  • Page 106: Dterm Board

    Simrad GC80/GC85 Dual Gyro Compass PIN NO NAME DETAILS ST21 Step signal (open drain signal) ST22 ST23 ST24 -24V DC for step signal output 2 ST25 +24V DC for step signal output 2 ST31 ST32 Step signal (open drain signal)
  • Page 107 TERMINAL LAYOUT PIN NO NAME DETAILS No 2 Master compass encoder signal (common) FGND Earth 24M+ 24M- 24R+ 24R- 24B+ 24B- Ext. power supply input (no connection) MDCN+ Not used MDCN- G1-1TX+ No 1 GYRO Serial signal output (IEC61162-1 ed.2/-2 G1-1TX- G1-1SC Serial signal common...
  • Page 108 Simrad GC80/GC85 Dual Gyro Compass PIN NO NAME DETAILS OCACN1 Off course alarm contact output (Not used) OCANC2 MALCN1 Alarm contact for selected gyro MALCN2 MRNCN1 Running contact for selected gyro MRNCN2 G1-2TX+ No 1 GYRO Serial signal output (IEC61162-1 ed.2/-2...

  • Page 109: Dip Switch Settings

    DIP SWITCH SETTINGS DIP SWITCH SETTINGS This section includes drawings for the different printed circuits boards in the Control unit that include jumpers and dip switches. 20221537 / D...

  • Page 110: General

    11.1 General 7 different boards in the Dual control unit have jumpers and/or dip switches that is used for configuring the GC80/85 system. Only a few of these jumpers/dip switches are used in installation and pre-running procedure for the gyro compass. Refer Power supply, page 47, and Dip-switch and jumper settings, page 48.

  • Page 111: Gpower Board 1 And 2

    DIP SWITCH SETTINGS 11.2 GPOWER board 1 and 2 Jumper settings on GPOWER boards JUMPER DEFAULT FUNCTION DESCRIPTION Open Over-current limit set Over-current value of dc24v for Master compass is set up. Short NOTE: Shall not be changed! Open Over-current limit Used for inspection at a factory.

  • Page 112: Gterm Board

    Simrad GC80/GC85 Dual Gyro Compass 11.3 GTERM board J11 J12 Jumper settings on GTERM board JUMPER DEFAULT FUNCTION DESCRIPTION Open = Two gyro systems TB3 – TB4 Gyro system Short = One gyro system 20221537 / D...

  • Page 113: Scc Board 1 And 2

    DIP SWITCH SETTINGS 11.4 SCC board 1 and 2 DIP switch settings on SCC boards SWITCH DEFAULT FUNCTION DESCRIPTION S1-1 Control unit type OFF = Expanded, ON =Compact S1-2 Master compass type OFF = Standard, ON =High Speed S1-3 Single or dual system OFF = Single, ON =Dual NOTE:...
  • Page 114 Simrad GC80/GC85 Dual Gyro Compass SWITCH DEFAULT FUNCTION DESCRIPTION SW2-1 OFF No output SW2-2 OFF S2-1 SW2-1 OFF Output for old monitor SW2-2 ON Data output for record SW2-1 ON Output for new monitor SW2-2 OFF S2-2 SW2-1 ON No output...

  • Page 115: Jumper Settings On Scc Board

    DIP SWITCH SETTINGS SWITCH DEFAULT FUNCTION DESCRIPTION OFF = Not used ON = Simrad GC type (80 or 85) shown in S3-6 For Simrad use display at start-up according to S1-2 setting. S3-7 Not used S3-8 S4-1 38400 bps Forward bow rate...
  • Page 116 Simrad GC80/GC85 Dual Gyro Compass JUMPER DEFAULT FUNCTION DESCRIPTION Output port: GTERM board, TB1 "ALCN" 1-2 Short = Alarm "CLOSES", Normal "OPEN" 3-4 short Alarm contact setting 3-4 Short = Alarm "OPEN", Normal "CLOSES" NOTE: Never use both jumpers at the same...

  • Page 117: Scoif Board

    DIP SWITCH SETTINGS 11.5 SCOIF board DIP switch settings on SCOIF board SWITCH DEFAULT FUNCTION DESCRIPTION SW1-1 OFF No external sensor SW1-2 OFF S1-1 SW1-1 OFF Magnetic system connected (back-up) SW1-2 ON External sensor connection SW1-1 ON External sensor connected SW1-2 OFF S1-2 SW1-1 ON...

  • Page 118: Jumper Settings On Scoif Board

    Simrad GC80/GC85 Dual Gyro Compass Jumper settings on SCOIF board JUMPER DEFAULT FUNCTION DESCRIPTION Output port: GTERM board, TB2: "3TX" 1-2 short = EC61162-2 or TOKIMEC version 3-4 short 3-4 short = IEC61162-1 ed.2 (ref. page 4) NOTE: Never use both jumpers...
  • Page 119 DIP SWITCH SETTINGS JUMPER DEFAULT FUNCTION DESCRIPTION Output port: DTERM board, TB21B: "G1-1TX" and TB21D: "G1-2TX" 1-2 short = EC61162-2 or TOKIMEC version 3-4 short = IEC61162-1 ed.2 3-4 short (ref. page 4) NOTE The true heading information on "NO.1 Gyro-compass"...
  • Page 120 Simrad GC80/GC85 Dual Gyro Compass JUMPER DEFAULT FUNCTION DESCRIPTION 1-2 short = An optional serial signal is received. 3-4 short = The serial signal Setting receiving port 1-2 short output from SCOIF of CPU on SCC board board received. NOTE:...
  • Page 121 DIP SWITCH SETTINGS JUMPER DEFAULT FUNCTION DESCRIPTION Input port: GTERM board, TB1 " ESRX" 1-2 short = Standard 3-4 short = Polarity is carried out reversely. Setting of polarity for 1-2 short "external heading NOTE: When a signal cannot sensor" signal be received by "1-2 short", it is set as "3-4 short."...
  • Page 122 Simrad GC80/GC85 Dual Gyro Compass JUMPER DEFAULT FUNCTION DESCRIPTION 1-2 short = Standard (The serial signal of a standard external direction sensor is received, and the signal is sent to "NO.1 Gyro 1-2 short compass") 3-4 short = With an external...
  • Page 123 DIP SWITCH SETTINGS JUMPER DEFAULT FUNCTION DESCRIPTION Output port：GTERM board, TB2: "6TX" 1-2 short = EC61162-2 or TOKIMEC version 3-4 short 3-4 short = IEC61162-1 ed.2 (ref. page 4) NOTE: Never use both jumpers at the same time! Output port：GTERM board, TB2: "7TX"...
  • Page 124 Simrad GC80/GC85 Dual Gyro Compass JUMPER DEFAULT FUNCTION DESCRIPTION Output port: DTERM board. TB21D: " MALCN" 1-2 short = Alarm "CLOSES" Alarm contact output Normal "OPEN" for Control panel 3-4 short 3-4 short = Alarm "OPEN" (or Change Over Normal "CLOSES"...
  • Page 125 DIP SWITCH SETTINGS JUMPER DEFAULT FUNCTION DESCRIPTION Output port: GTERM board. TB2: "ST1/OPRX+" 1-2 short = The step signal for "Step signal type repeater" is output (ST1). J46 * 1-2 short 3-4 short = Serial signal receive.(OPTION) (OPRX+) NOTE: Never use both jumpers at the same time! Output port: GTERM board.

  • Page 126: Pcc Board

    Simrad GC80/GC85 Dual Gyro Compass 11.6 PCC board PCC BOARD PCC board 20221537 / D...

  • Page 127: Dip Switch Settings On Pcc Board

    SW1-4 OFF S1-4 SW1-3 ON External sensor connected (back-up) SW1-4 ON S1-5 Input of steering mode information S1-6 SIMRAD / Tokimec ON = Simrad, OFF = Tokimec S1-7 Not used S1-8 Jumper settings on PCC board JUMPER DEFAULT FUNCTION DESCRIPTION...
  • Page 128 Simrad GC80/GC85 Dual Gyro Compass THIS PAGE INTENTIONALLY LEFT BLANK 20221537 / D...

  • Page 129: Alarm Listing

    ALARM LISTING ALARM LISTING This section provides a listing of alarm codes, a short description, and the possible cause for the alarm message. 20221537 / D...

  • Page 130: The Alarm System

    If a fault occurs, an alarm code will be displayed in the LCD, the Alarm lamp will be flashing, and an audible alarm will be activated. In a GC80/85 Dual system, alarms will be generated both from each single gyro compass, and from the dual system. Refer Alarm messages, page 26.

  • Page 131: Alarms Generated By Each Gyro Compass

    ALARM LISTING Alarms generated by each gyro compass Alarm Datailed Alarm content Possible cause code code Main power is When the main power (AC power source) is lost. abnormal Power supply unit in the control box becomes over current. Power is Power supply unit in the control box becomes over abnormal voltage.

  • Page 132: Alarms Generated By The Dual System

    Simrad GC80/GC85 Dual Gyro Compass Alarm Datailed Alarm content Possible cause code code MAG/EHS data EHS data abnormal (timeout is 17 sec.) abnormal EXT. sensor EXT. sensor system is stopped or serial signal from EXT. communication off sensor is cut (timeout is 15 sec.) EXT.

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