Furuno 511, 520 manual Principle of Operation

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1. PRINCIPLE OF THE AUTOPILOT

Principle of Operation

In the AUTO modes, the heading information from a heading sensor is continuously compared with the course that is set on the autopilot’s controller. (in the NAV mode, the course to the waypoint is received from a plotter connected to the NAVpilot-511/520). With the boat on course, these two signals are equal.

If the boat drifts off course, the difference between the primary heading and the set course will change proportionally and there will be an imbalance at a comparator. The comparator’s output will then move up or down depending on whether the course error is to the left or right of the set course.

The rudder will continue to turn the vessel until a balanced condition is obtained at the comparator, at which point the drive to the rudder stops.

The rudder position is determined by a rudder reference unit and continuously monitored by the processor unit.

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Contents Autopilot 00014860304 Safety Instructions Table of Contents Alarms IiiForeword FeaturesWord to the Owner of the NAVpilot-511/520 System Configuration System configuration of NAVpilot-511/520This page is intentionally left blank Principle of the Autopilot Principle of AutopilotPrinciple of Operation Operating Controls Basic OperationControl unit, front view Turning On/Off Turning the power offStartup sequence Main menu ex. Stby mode Adjusting Brilliance and ContrastContrast, brilliance window Displays Choosing the display modeDisplays Selecting the data shown on Data Display Selecting dataAnalog indicator selection Displayed dataStby mode display Ex. Normal Display Stby ModeSteering Modes Using the Auto mode Auto ModeAuto mode display Ex. Normal Display Enabling the Advanced Auto mode Advanced Auto modeAdvanced Auto mode display Ex. Normal Display Advanced auto options windowStarting the NAV mode NAV ModeNAV mode display Ex. Normal Display Nav mode options window Selecting sailing method of NAV modeNAV mode, Course and XTE Switching waypoint Waypoint switching options windowSteering Mode Turn menu Turn ModeTurn menu inputting TLL data 360º Turn for Auto mode only 180º Turn for Auto mode onlyExample of 180º maneuver in turn mode Example of 360º maneuver in turn modeOrbit Example of orbit maneuver ex. clockwiseTo escape from the Orbit while it is in use, press Stby key Example of spiral maneuver in turn mode SpiralSteering Mode Example of Figure Eight in NAV mode Figure EightNavigating to TLL point TLL navigationTurning power on dial type Remote ModeDial type remote controller FAP-5551 FU Follow-Up mode display dial remote controllerTurning power off dial type Rotating dialTurning power on, button and lever type remote controllers NFU No Follow-Up mode displayOperating remote controller ex. button and lever types Turning power off, button and lever type remote controllersDodging in Stby mode Dodge ModeDodge mode display Dodging in Auto or NAV mode Heading fromThis page is intentionally left blank Stby mode menu Stby Mode MenuMenu Operation Selecting the method of entering the parameter Setting parametersParameter setup menu Sea state options windowMANUAL-CALM Deviation level options windowSetting parameters manually Example of Manual parameterWeather Track line and weather setting valueRudder angle and rudder gain setting Rudder GainGeneral guidelines for setting counter rudder gain Counter RudderAdjusting the sensitivity in monitoring the boat’s trim Auto trim options windowNav mode data source window ex. default setting When towing the netNAV Mode Auto net towing options windowRadius of Orbit Fish ModeWaypoint Switching Spiral SpeedActivating key beep Setting other menu itemsSystem setup menu Key beep options windowLocking the control unit Lock options windowSetting the panel dimmer Alarm Setup Menu AlarmsAlarm setup menu Alarm interval options window Selecting the alarm buzzerAudio alarm options window Selecting the beep patternSetting the heading deviation alarm Setting the watch alarmWatch alarm options window Setting the cross-track error limit XTE alarm options windowSetting the speed alarm Speed alarm options windowSetting the depth alarm Depth alarm options windowTemp alarm options window Setting the temperature alarmSetting the trip distance alarm Log trip options windowClearing the trip distance Log trip clear options windowAlarm Information Alarm menuAlarm messages Alarm messages, their meanings and prioritiesMaintenance program Maintenance & TroubleshootingPreventive Maintenance Check point RemedyParts Name Type Code No Remarks Replacement of FuseDiagnostics Test options windowControl Unit Test Processor Unit TestHeading Sensor Test Navpilot-511Navpilot-520 Keyboard TestScreen Test Rudder Setup and Auto Test Rudder testSystem Data Clearing MemoriesSystem data screen Error messages Error MessagesError message Meaning Remedy Error messages con’t Menu Tree MN-1Auto mode menu MN-2Processor Unit NAVPILOT-511/520Control Unit InterfaceEnvironmental Conditions Power SupplyCoating Color Index IN-1
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520, 511 specifications

Furuno is a renowned name in the marine electronics industry, best known for its high-quality navigational and communication tools. Among its diverse product line, the Furuno 511 and 520 stand out as exceptional marine radars designed to enhance boating safety and efficiency.

The Furuno 511 radar is equipped with advanced technologies that offer a range of functionalities essential for navigating in various sea conditions. One of the key features of the 511 is its high-resolution display, which ensures that users can easily interpret radar images in real-time. This radar system operates on a frequency of 9.41 GHz, enabling it to provide superior target detection and tracking capabilities, crucial for identifying other vessels, landmasses, and potential hazards.

Another notable feature of the Furuno 511 is its automatic radar plotting aid (ARPA). This technology allows the radar to track multiple targets simultaneously, providing mariners with critical information such as their relative speed and course. This tracking ability enhances situational awareness and aids in making informed decisions on course adjustments.

On the other hand, the Furuno 520 radar is designed with similar cutting-edge technologies, offering a robust suite of features tailored for both commercial and recreational vessels. The Furuno 520 boasts advanced signal processing capabilities, which result in enhanced target discrimination and a clutter-free display. This is particularly beneficial in busy shipping channels or congested waters where distinguishing essential targets from background noise is vital.

The Furuno 520 also integrates a user-friendly interface, allowing for easy navigation of settings and options. This ease of use is further augmented by customizable display options, enabling users to tailor the radar presentation to meet their specific needs. Additionally, the radar incorporates automatic gain control, ensuring that targets can be seen clearly regardless of environmental conditions.

Both the Furuno 511 and 520 exemplify durability and reliability, constructed to withstand the rigors of maritime environments. With their robust builds and weather-resistant features, these radars are designed to function optimally, providing crucial navigational support in adverse conditions.

In conclusion, the Furuno 511 and 520 radars are exemplary pieces of equipment that deliver essential features and technologies for maritime navigation. Their advanced tracking capabilities, signal processing, and user-friendly interfaces make them ideal for enhancing safety and efficiency on the water. For anyone serious about marine navigation, investing in these high-performance radars is a smart decision that can significantly improve situational awareness and overall boating experience.
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