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OPEM SISTEMI - ELECTRO-HYDRAULIC STEERING

OPEM SISTEMI manufactures marine equipment for Mega yachts and commercial Vessels. All their products meet the latest Classification Societies’ regulations as well as different Customers’ requirements (Custom made projects).

OPEM SISTEMI has a long experience in the design, manufacturing and maintenance of marine equipment like Electro-hydraulics Steering Gears with electronic control systems from 300 daNm up to 20.000, with Follow Up, Non Follow Up and Emergency functions.

 

Operation

The electro-hydraulic assisted steering gear, allows the rudders to be driven by two hydraulic actuator cylinders connected to the tillers. Under normal condition, rudders can be controlled from the navigating bridge (by follow up and non follow up steering modes) and from the wings (by non follow up steering mode).

Control and monitoring operations are affected by a touch screen terminal, in the navigating bridge, connecting to a PLC electronic device. Actuator cylinders are normally actuated by one electro hydraulic power unit. A second electro hydraulic power unit with stand-by function is also foreseen.

The emergency hydraulic steering by the hand pump is also provided. Connection between actuator cylinder, power units and the hand emergency pump, is foreseen through independent hydraulic lines, according to prescriptions of the main REGISTERS OF CLASSIFICATION.

Steering Mode

  1. FOLLOW UP STEERING (NAVIGATING BRIDGE) Steering is affected by the wheel of the potentiometric transmitter, with one power unit running (PU1 or PU2).
  2. NON FOLLOW UP STEERING (NAVIGATING BRIDGE OR WINGS) Steering is effected by the ON-OFF joystick, with one power unit running (PU1 or PU2).
  3. AUTOPILOT STEERING
  4. EMERGENCY LOCAL ASSISTED STEERING In case of failure of the steering control devices, steering can be effected by hand operation of the solenoid valves of the running power unit.
  5. EMERGENCY HAND HYDRAULIC STEERING In case of power supply failure, or in case of failure of the assisted control system, steering can be effected by the wheel of the hand piston pump.

ADDITIONAL MEANS FOR EMERGENCY STEERING By operating the shut-off valves, piping system can be sectioned, thus excluding that component or pipe involved in the failure. Steering is still granted by the remaining working components.

Scope of Supply

Standard scope of supply includes:

  • Rudder actuators of suitable torque
  • Rudder carrier
  • Tiller arm
  • Connecting rod
  • Electro-hydraulic double power unit
  • Potentiometric transmitter with feed back (FU)
  • Control unit with PLC
  • Touch screen video terminal
  • ON/OFF joystick tiller handle (NFU)
  • Electric limit switches
  • E.M. Starter
  • Emergency manual hydraulic transmitting unit
  • Electric rudder angle indicator analogic type
  • Set of installation drawings and instructions
  • Operator’s and maintenance manual with trouble shooting and spare part list

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