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Raymarine ACU-400 Evolution Autopilot Actuator Control Unit - Professional Drive Control for Type 2 & 3 Systems
High-power autopilot control unit for hydraulic, linear, and rotary mechanical steering systems
The Raymarine ACU-400 Actuator Control Unit (Model E70100) represents the pinnacle of marine autopilot control technology, delivering robust 30-amp drive power for demanding Type 2 and Type 3 steering systems. This professional-grade control unit serves as the central hub of Raymarine's Evolution autopilot system, providing precise drive control for hydraulic, linear, and rotary mechanical steering configurations while supplying power to the SeaTalk ng network.
Engineered for larger vessels and commercial applications requiring maximum autopilot performance, the ACU-400 features advanced drive electronics, comprehensive connectivity options, and integrated power management. Combined with the included M81105 Rotary Rudder Reference sensor and connected to an Evolution control head, this unit forms the foundation of a complete autopilot system capable of handling the most challenging steering loads and marine conditions.
Professional Autopilot Control Features
- High Power Output: Maximum continuous 30 amp drive current at supply voltage for demanding steering systems
- Universal Voltage Compatibility: Operates on 12V or 24V DC systems with wide voltage range tolerance
- Advanced Drive Control: Supports Type 2 hydraulic, Type 3 hydraulic, linear, and rotary mechanical drives
- Integrated Clutch Control: Up to 4 amp continuous clutch output with multi-voltage capability
- SeaTalk ng Power Supply: 3-amp fuse-protected power output for network devices
- Complete Sensor Package: Includes M81105 Rotary Rudder Reference for precise steering feedback
- Digital I/O Capability: Advanced input/output connections for system integration
- Marine-Grade Construction: Rugged drip-resistant housing designed for harsh marine environments
Technical Specifications
Drive Output Specifications
- Maximum Drive Current: 30 amps continuous at supply voltage
- Drive Clutch Output: 4 amps continuous (12V/24V selectable)
- Compatible Systems: Type 2 & 3 hydraulic, linear & rotary mechanical
- Digital I/O: Programmable input/output connections
Power Requirements
- Nominal Supply Voltage: 12V or 24V DC
- Operating Voltage Range: 10.8V to 31.2V DC
- Standby Consumption: 300mA main power, 20mA SeaTalk ng
- SeaTalk ng Power Out: 3 amps at 12V (fuse protected)
- Load Equivalency Number: 1 LEN
Physical & Environmental
- Dimensions: 285mm x 211.5mm x 64.5mm (11.2" x 8.3" x 2.5")
- Weight: 2.2kg (4.84 lbs)
- Operating Temperature: -20°C to +55°C (-4°F to +131°F)
- Storage Temperature: -30°C to +70°C (-22°F to +158°F)
- Waterproof Rating: Drip resistant construction
- Relative Humidity: Maximum 93%
System Connectivity & Integration
Included Components
- M81105 Rotary Rudder Reference: Precision steering position feedback sensor
- Sleep Switch Connection: Manual autopilot disengagement capability
- Power Connections: Main power input with ground connections
- Drive Motor Control: High-current output for steering actuators
Connection Points
- SeaTalk ng Network: Integrated data and power distribution
- Drive Clutch Output: 4-amp clutch control with voltage selection
- Digital Input/Output: Programmable I/O for advanced integration
- Ground Connections: Multiple grounding points for system reliability
Steering System Compatibility
Type 2 Hydraulic Systems
- High-power hydraulic pumps and cylinders
- Commercial and large recreational vessel steering
- Clutch-equipped hydraulic systems
- Professional marine applications
Type 3 Hydraulic Systems
- Heavy-duty hydraulic steering configurations
- Multi-station hydraulic systems
- Commercial vessel autopilot integration
- High-load steering applications
Mechanical Drive Systems
- Linear drive actuators for wheel steering
- Rotary drive systems for direct rudder control
- Cable steering system integration
- Custom mechanical steering configurations
Evolution Autopilot System Integration
Required System Components
- Control Head: p70Rs, p70s, or EV-100 display for user interface
- Compass Sensor: EV-1 or compatible heading sensor for course reference
- Drive Unit: Appropriate Type 2 or Type 3 steering drive mechanism
- SeaTalk ng Network: Data backbone connecting all system components
Optional Enhancements
- Wind Transducer: For wind-based steering modes
- GPS Integration: Track mode and navigation waypoint following
- Remote Controls: Wireless helm operation and course adjustment
- Redundant Sensors: Backup heading and positioning systems
Frequently Asked Questions
What steering systems are compatible with the ACU-400?
The ACU-400 is designed for Type 2 and Type 3 hydraulic systems, linear mechanical drives, and rotary mechanical drives. It provides 30 amp continuous drive current and 4 amp clutch control, making it suitable for larger vessels and demanding steering applications.
Can the ACU-400 operate on both 12V and 24V systems?
Yes, the ACU-400 operates on both 12V and 24V DC systems with an operating voltage range of 10.8V to 31.2V DC. The clutch output can be configured for 12V or 24V operation depending on system requirements.
What is included with the ACU-400?
The ACU-400 includes the M81105 Rotary Rudder Reference sensor, which provides precise steering position feedback to the autopilot system. Additional components like control heads, compass sensors, and drive units are sold separately.
Does the ACU-400 supply power to the SeaTalk ng network?
Yes, the ACU-400 provides 3 amp fuse-protected power output at 12V to the SeaTalk ng network, allowing it to serve as a central power source for connected navigation and autopilot components.
What are the installation environment requirements?
The ACU-400 operates in temperatures from -20°C to +55°C (-4°F to +131°F) with maximum 93% relative humidity. It features drip-resistant construction and should be installed in a protected location away from direct water exposure.
Choose the Raymarine ACU-400 Evolution Actuator Control Unit for professional-grade autopilot performance in demanding marine applications. With 30-amp drive capability, universal voltage compatibility, integrated SeaTalk ng power supply, and comprehensive connectivity options, the ACU-400 provides the robust control foundation that serious mariners require for reliable autonomous steering in all conditions.
