In accordance with the analogue order received by the programmable logic controller, the proportional hydraulic distributor will provide the flow and hydraulic pressure needed to move the cylinder(s) at the speed and to the positions commanded by the steering wheel, the joystick or any other transmitter.

In the case of a double cylinder installation, its independent modules allow for permanent synchronization of the cylinders. The modules are fitted with relief valves which protect the circuit against excessive pressure rise. They feature manual overrides in the event of a loss of power and are protected by a filter with clogging detection alarm. They can be delivered assembled on the equipped tank or separately for on-line installation between the equipped tank and the cylinders.

Their volumes are determined by the flow rates generated by the power packs. They are fitted with filling and emptying apertures and oil level sight glass with alarm.

They also feature anchoring studs for the installation of the power packs and proportional distributors.

Depending on the system setup (see “Sélection of Steering System” menu), they can accommodate one or two power packs.

Power packs are complete assembled units consisting of an electric motor, a hydraulic pump with fittings, a coupling between the pump and the motor and a support plate. Pump and motor capacities vary in function of the volume and the number of cylinders to be driven.
Electric motors can be supplied within certain limits (see “Electro-Hydraulic Steering System with Single Cylinder” and “Electro-Hydraulic Steering System with Double Cylinder”) in 24V direct-current, single-phase or three-phase alternating current. They can be delivered assembled on the equipped tank or separately for on-line installation between the tank and the proportional distributor.

The cylinders provide the power of the steering system.
They are selected by using the methods described in « Sélection of Steering System » menu.

All the cylinders are supplied with their pre-assembled and adjusted linear sensors. The linear sensor is supplied pre-wired with a pre-swaged connector half.

Intended for use on all-terrain machines, our programmable logic controller is of robust design to operate in hostile environments (temperature, moist atmosphere, impacts, vibrations, etc.) It has been programmed to relay orders to the proportional distributor(s) swiftly by using the input data supplied (cylinder linear sensors), the instructions provided (display screen, steering wheels, joystick…) and the data from its built-in computer program.
This type of micro-controller is very responsive. It features physical inputs and outputs which are pre-wired with pre-swaged connector halves.

The screen display allows for Human-Machine Interface (HMI) and communication with the logic controller in order to modify the selected settings. Without screen, it is only possible to communicate with the logic controller by the attendance of a qualified programmer.

The screen display offers four configuration modules:

• HMI (Human-Machine Interface) for the settings
• Visualization
• Diagnosis
• Manual steering control

The HMI module gives direct access to the selection settings for the transmitters and cylinders by activation or deactivation; it makes it possible to act on the parallelism of the cylinders by increments on the boat steering, etc. With a private code (secret code), it also gives access to additional settings such as zero relative bearing, adjustment of the transmitters response angle, maximum rudder angles, lock to lock speed adjustments, decelerations, etc.

The visualization module allows viewing the rudder angles and parallelisms in real-time. It also displays the maintenance schedule of some elements in the system (oil change, filter replacement…) and conveys the alarms (oil level, temperature, filter clogging…) in the form of graphic and/or buzzer.

The diagnosis module allows carrying out a global inspection before starting by testing individual elements in order to identify and isolate the possible failure of a system component and it verifies the supply voltage in real time.

The manual steering control module makes it possible to steer the boat via the display screen keys, thus a substitute for the transmitters.

With this sturdy designed electric wheel, it takes 2.5 turns for the cylinder(s) to travel their full strokes. The electric wheel is affixed with three screws behind a bulkhead and is connected to the electric harness with an identified, pre-swaged connecting pin.
It is equipped with a standard conic shaft end. To be used only on single steering station installations with a steering wheel.

With this sturdy designed electric wheel, it takes 540° (1.5 turn) for the cylinder(s) to travel their full strokes. The electric wheel is affixed with three screws behind a bulkhead and is connected to the electric harness with an identified, pre-swaged connecting pin. It is equipped with a standard conic shaft end. Thanks to the automatic recentering function, it can be used for twin steering station installations with two steering wheels.

This angular control makes it possible to maintain a selected angle to port or starboard by increments of 10 degrees, without having to operate the lever continuously. Easy to install, of sturdy design, its operation is intuitive.

Designed to monitor work functions on mobile machinery, this joystick is particularly robust. Featuring centre spring return and digital outputs (CAN), up to four units can be installed at different locations on the boat. Its protection rating corresponds to IP66/67. It also features non-contact detection (Hall Effect) and user-friendly lever ergonomics. Its proportional speed control makes it possible to increase or decrease the cylinder travel speed in function of the lever displacement speed.

When the installation includes several transmitters (steering wheel(s), joystick(s)…), the selector knob is pressed to select the transmitter to be used. It then produces a green light and disables all other transmitters.