Simrad A2004 Autopilot Control Unit User Manual

1. Introduction

The Simrad A2004 is a specialized autopilot control unit designed for professional mariners operating diverse commercial vessels. This unit provides reliable navigation control through a user-friendly Simrad interface, displayed on a wide-angle, anti-fog color screen. It is engineered for responsive operation and ease of use, featuring a precise rotary control dial and dedicated buttons for direct access to steering modes, a customizable Work mode, and automated turn patterns.

Figure 1: Simrad A2004 Autopilot Control Unit, showing the main display unit, a separate control box, and a rudder feedback unit. The main unit features a large display, rotary dial, and various control buttons.

2. Setup and Installation

2.1. Package Contents

Verify that all components are present in the package:

• Simrad A2004 Autopilot Control Unit
• Mounting bracket or flush mount kit
• NMEA 2000 Cable
• Installation hardware
• Documentation (this manual)

2.2. Mounting Options

The A2004 unit offers flexible mounting solutions:

• Flush Mount: For a sleek, integrated appearance on a panel or dashboard.
• Bracket Mount: Utilizes the included bracket for surface mounting, allowing for adjustable viewing angles.

Ensure the chosen mounting location provides clear visibility, easy access to controls, and protection from excessive moisture or direct sunlight. Refer to the installation template for precise cut-out dimensions if performing a flush mount.

2.3. Electrical Connections

The A2004 features NMEA 2000 certified connectivity for integration into your vessel's marine electronics network.

• Connect the supplied NMEA 2000 cable to the appropriate port on the A2004 unit and to your vessel's NMEA 2000 backbone.
• Ensure all power connections are made according to the vessel's electrical system standards and local regulations.
• Verify proper grounding to prevent electrical interference.

For detailed wiring diagrams and specific connection instructions, consult the full installation guide provided with the product.

3. Operation

3.1. User Interface Overview

The A2004 features a robust and intuitive interface designed for quick and precise control.

• 4.1-inch Color Display: Provides clear visibility of navigation data and autopilot status, enhanced by optical bonding for improved readability in various lighting conditions.
• Rotary Control Dial: A large, precise dial for adjusting course, selecting options, and navigating menus.
• Dedicated Buttons: Quick access to essential functions such as STBY (Standby), AUTO (Automatic Steering), NAV (Navigation Mode), WORK (Customizable Work Mode), MENU, and TURN patterns.
• Directional Buttons: Used for fine-tuning course adjustments and menu navigation.

The unit supports control via buttons, the rotary dial, and limited touchscreen interaction for certain models or configurations.

3.2. Basic Autopilot Modes

The A2004 offers several steering modes to suit different operational needs:

• STBY (Standby): Disengages the autopilot, allowing for manual steering control. Press the STBY button to activate.
• AUTO (Automatic Steering): Engages the autopilot to maintain a set course. Press the AUTO button to activate. The current course will be maintained.
• NAV (Navigation Mode): Connects the autopilot to a compatible chartplotter or navigation system to follow a pre-programmed route or waypoint. Press the NAV button to activate.
• WORK (Customizable Work Mode): A specialized mode that can be configured for specific vessel operations, offering tailored steering characteristics. Press the WORK button to activate.

3.3. Advanced Steering Features

• Precise, No Drift Steering: Advanced algorithms ensure the vessel maintains its course accurately, compensating for environmental factors.
• Smooth, Continuous Steering Technology: Provides comfortable and efficient steering performance.
• Automated Turn Patterns: Access pre-defined turn patterns for efficient maneuvering. Use the TURN button to select and initiate patterns.
• Thruster Compatibility: The system is compatible with thrusters for enhanced low-speed maneuverability.
• Heavy-Duty Rudder Feedback Support: Ensures accurate rudder position sensing for optimal autopilot performance.

4. Maintenance

Regular maintenance ensures the longevity and optimal performance of your Simrad A2004 Autopilot Control Unit.

• Cleaning: Gently wipe the display and unit exterior with a soft, damp cloth. Avoid abrasive cleaners or solvents.
• Software Updates: Periodically check the Simrad website for available software updates. Keeping the firmware current ensures access to the latest features and performance enhancements.
• Cable Inspection: Regularly inspect all cables and connections for signs of wear, corrosion, or damage. Ensure all connections are secure.
• Environmental Protection: While designed for marine environments, protect the unit from extreme temperatures and prolonged direct exposure to harsh weather conditions when possible.

5. Troubleshooting

This section provides basic troubleshooting steps for common issues. For more complex problems, contact Simrad customer support.

• Unit Does Not Power On:
  • Check all power connections and ensure they are secure.
  • Verify the vessel's power supply is active and providing the correct voltage.
  • Inspect fuses in the power circuit.
• Autopilot Not Engaging:
  • Ensure the unit is receiving valid navigation data (e.g., GPS position, heading).
  • Check NMEA 2000 network connections.
  • Verify that the rudder feedback unit is properly connected and calibrated.
• Inaccurate Steering:
  • Perform an autopilot calibration procedure as outlined in the detailed installation manual.
  • Check for magnetic interference near the heading sensor (if applicable).
  • Ensure the rudder feedback unit is functioning correctly.

6. Specifications

7. Warranty and Support

7.1. Product Warranty

The Simrad A2004 Autopilot Control Unit is covered by a manufacturer's warranty. For specific details regarding warranty duration, coverage, and terms, please refer to the warranty card included with your product or visit the official Simrad website. Keep your proof of purchase for warranty claims.

7.2. Customer Support

For technical assistance, troubleshooting beyond this manual, or service inquiries, please contact Simrad customer support.

• Online Resources: Visit the official Simrad website for FAQs, detailed manuals, software downloads, and support contact information.
• Contact Information: Refer to the Simrad website or product packaging for the most current contact details for your region.