ACU-400 Evolution autopilot actuator control unit

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Raymarine

E70100

ACU-400 Power Drive Unit

The Raymarine ACU-400 power drive is the control unit for Evolution autopilot actuators, designed for high-power electric steering systems. It manages a wide range of actuators via SeaTalk NG, ensuring smooth integration and precise control. The most powerful model in the ACU-200/300/400 series, it is intended for demanding installations. Included accessories are detailed in the provided documentation and include a documentation pack, a SeaTalkng spur cable (400 mm), a Devicenet to SeaTalkng adapter cable (120 mm), 4 mounting screws (M5 x 30), 4 mounting screws (M5 x 20), 4 washers and 4 spring washers, as well as 4 nuts.

Retail priceBenefit from the professional rate

£1,839.35 GBP

£1,839.35 GBP ~~£1,896.14 GBP~~

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In stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

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Support service

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Technical specifications

Max power consumption	720
Operating voltage	12 V or 24 V DC
Recommended fuse rating	30
Product width	284.9
Product height	59.6
Product depth	261.0
Bus compatibility	NMEA 2000, SeaTalk NG
Wired network	NMEA 2000, SeaTalk NG
Mounting type	Surface-mount installation
Certifications	CE
Steering modes	Auto, Standby, Wind, Nav, Tracking, Power Steer
Drive unit type	Linear (Type 1/2), Hydraulic linear (Type 2/3), I/O Stern, Wheel, Sport Drive, Verado, Rotary (Type 1/2), Hydraulic pump (Type 1/2/3)
NMEA 0183 ports	0
Browser-based setup	No
Motion correction support	Yes
Alarm output	Via SeaTalk NG network

Detailed description

Designed for Raymarine Evolution autopilot systems, the ACU-400 power drive unit (E70100) is a dedicated actuator control unit for installations requiring high power management. This module serves as an interface between the EV-1 central sensor, control heads (p70, p70s, p70R, p70Rs) or multifunction displays (MFD), and the vessel’s steering actuator.

Integration and compatibility

The ACU-400 integrates with Raymarine’s SeaTalk NG network, facilitating communication and data distribution. It is compatible with a wide range of drive systems, including linear actuators Type 1 and 2, linear hydraulic systems Type 2 and 3, I/O Stern drives, wheel systems, Sport Drive, Verado, as well as rotary drives Type 1 and 2, and hydraulic pumps Type 1, 2, and 3. This versatility ensures compatibility with various steering configurations on medium to large vessels. The unit’s physical dimensions are 284.9 mm x 261.0 mm, with a height of 59.6 mm, and require a minimum 50 mm clearance for cables.

Position in the Evolution range

The ACU-400 power drive unit is positioned as the most robust solution in the ACU series (which also includes ACU-100, ACU-150, ACU-200, and ACU-300). While the ACU-100 and ACU-150 are designed for low to medium power applications, the ACU-400, grouped with the ACU-200 and ACU-300 in installation guides, is specifically sized for high-current steering actuators such as large-capacity hydraulic pumps or powerful linear cylinders. This unit is essential for maintaining precise and responsive control of the autopilot on vessels with demanding steering power requirements.

Documentation

Type	Nom
	EN - Technical Drawing - ACU-400 Power Unit
	EN - Notice d'installation - Boîtier de puissance ACU-400
	EN - Technical Document - ACU-400 Power Unit
	FR - Notice d'installation - Boîtier de puissance ACU-400
	EN - Declaration of Conformity - ACU-400 Power Unit
	EN - Declaration of Conformity - ACU-400 Power Box
	EN - Declaration of Conformity - ACU-400 Power Unit
	EN - Mounting template - ACU-400 power unit
	EN - Mounting template - ACU-400 power box

Expert opinion

Pol CONIN

Digital Manager

« Raymarine ACU-400: Power management for demanding Raymarine Evolution autopilots »

The Raymarine ACU-400 power unit is a critical component for Raymarine Evolution autopilot systems, particularly suited to vessels equipped with high-power steering actuators. Its primary function is to provide a robust and reliable interface between the SeaTalk NG network and hydraulic power cylinders or pumps, ensuring that autopilot commands are transmitted with the required power and precision.

During installation, it is essential to comply with wiring requirements, including dedicated grounding via a drain wire, to ensure system stability and protection against electromagnetic interference. Its wide compatibility with various actuator types (linear, hydraulic, rotary) makes it a versatile choice. However, its sizing clearly targets installations where ACU-100 or ACU-150 units would be undersized, typically for type 2 or 3 hydraulic pumps.

Commissioning involves detailed configuration steps via the autopilot controller, including hull type and drive type selection, as well as in-water calibration. These steps are critical to optimizing steering performance. Choosing the ACU-400 means opting for a solution capable of handling the demands of the most demanding steering systems, delivering added value in terms of reliability and performance on larger vessels.

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ACU-400 Power Drive Unit

£1,839.35 GBP

£1,839.35 GBP ~~£1,896.14 GBP~~

Frequently Asked Questions

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What is the role of the ACU-400 power unit in a Raymarine Evolution autopilot system?

The ACU-400 power unit is an actuator control unit dedicated to Raymarine Evolution autopilot systems. It acts as the essential interface between the EV-1 central sensor, control heads (such as p70, p70s, p70R, p70Rs) or multifunction displays (MFD), and the vessel's steering actuator. It is specifically designed for installations requiring high power management for steering.

Which types of steering actuators is the ACU-400 controller compatible with?

The ACU-400 is compatible with a wide range of steering drive systems, ensuring versatility for various vessel configurations. It supports the following actuator types:

Linear actuators Type 1 and 2Linear hydraulic systems Type 2 and 3I/O Stern DrivesSport DriveVeradoRotary drives Type 1 and 2Hydraulic pumps Type 1, 2, and 3

What are the physical dimensions of the ACU-400 housing and the space required for its installation?

The physical dimensions of the ACU-400 housing are 284.9 mm x 261.0 mm, with a height of 59.6 mm. For proper installation and cable routing, a minimum clearance of 50 mm is required around the unit.

How does the ACU-400 connect to the SeaTalk NG network?

The ACU-400 integrates directly into Raymarine's SeaTalk NG network. This connection enables communication and data distribution between all components of the Evolution autopilot system, including the EV-1 sensor, control heads, and multifunction displays, ensuring smooth and rapid data exchange.

Which control heads or multifunction displays are compatible with the ACU-400 autopilot control unit?

The ACU-400 autopilot control unit is designed to work with the following Raymarine autopilot control heads:

p70, p70S, p70R, p70RS

It is also compatible with Raymarine multifunction displays (MFDs) that can be used as autopilot controllers, allowing full integration into your navigation system.

What is the difference between the ACU-400 and the other power modules in the Evolution series?

The ACU-400 is the most robust solution in the ACU series (which also includes the ACU-100, ACU-150, ACU-200, and ACU-300). While the ACU-100 and ACU-150 are designed for low to medium power applications, the ACU-400 is specifically sized for high-current steering actuators. It is ideal for high-capacity hydraulic pumps or powerful linear actuators, essential for maintaining precise and responsive autopilot control on vessels with higher steering power demands.

What are the main steps for commissioning a Raymarine Evolution autopilot system using the ACU-400?

Commissioning a Raymarine Evolution autopilot system with the ACU-400 involves the following steps:

Power up all components of the autopilot system.Select the vessel's hull type via the controller menu.Use the dockside calibration assistant to configure basic parameters.Select the steering drive type.Check rudder alignment (for systems with rudder angle sensor).Set the rudder limit.Check the rudder drive.If no rudder angle sensor is installed, specify the hard-over time.Linearize the compass.

Does the ACU-400 power housing require a dedicated ground connection?

Yes, for optimal and safe operation, the ACU-400 power housing requires a dedicated ground connection. A dedicated drain wire must be used for this ground connection.