Rolls-Royce Helicon X3 P&T Control System

Rolls-Royce Helicon X3 P&T Control System

3 Design 3.1 Lever Each thruster has its own lever. Their main functions are: • Control of pitch, RPM and azimuth direction (dependant of application) • In operation • Command transfer • Lever in command • Back-up control • Alarm The control lever has integrated buttons and indication lamps for command transfer,  backup system on/off, alarm indication/buzzer and push button for reset of buzzer. The  display in the base shows set command (pitch and direction) from the lever. The lever contains two redundant electronic circuits, one for the normal control system  and one for the backup system

There is one command page for each thruster, in addition to one system overview page  and one alarm page. The overview page shows the most essential information for all  thrusters, but to activate functions or to view all available information for a thruster, the  particular thrusters' page must be selected. The graphical design is based on the following principles: • All functions pages are only one click away • Large and simple buttons which are easy to read. • Same design theme for all clickable objects. • To avoid unintentional activation of functions, all function activation buttons require  press on the accept button to proceed.

Indicators The indicators give feedback on various data and can be found on the bridge and in the  engine control room. There are three main types of indicators: • Azimuth indicator • RPM indicator • Pitch indicator In addition a bridge order indicator may be delivered on some vessels. 3.5 Viewcon Network cabinet The network cabinet(s) contains several switches. The network cabinet(s) connects the  panel PCs and the controller cabinets. Network Operator stations and electronic units are linked together in an Ethernet network. The  network is single and may contain several separate switches.  (CAN bus is the internal communication between levers, I/O modules and Marine  Controller.)

Controller cabinet Usually located on bridge or in instrument room. This cabinet distributes signals to and  from the bridge and ECR. It controls all the signals from the Helicon X3 and send them  to the I/O cabinet. There is one controller cabinet per propeller/thruster. Communicates with the I/O cabinet located in the thruster room. 1. Rolls-Royce Marine Controller (Normal) 2. Rolls-Royce Marine Controller (Backup) 3. I/O modules 4. Power distribution 5. Network switches and terminals 6. Signal isolation amplifiers (optional) 7. Power Distribution 8. Main power supply (AC) / fuses 9. Backup power supply (DC) / fuses 3.7 I/O Cabinet The I/O cabinet is often located in the thruster room near sensors and actuators. This  cabinet distributes signals to the different propulsion/thruster units. There is one I/O unit  per propeller/thruster. The I/O cabinet sends signals to the actuators on the propellers/thrusters and receives  signals from the sensors. There is CAN bus communication between each I/O and  controller cabinet.

1. I/O modules 2. Capacitors (optional) 3. Power distribution 4. Power distribution 5. Power / network / CANBus terminals 6. Local panel connection 7. Actuator interface card(s) (optional) 8. Relays (optional) 9. Signal isolation amplifiers (optional) 10. I/O terminals 4 Functions Tunnel Thruster Control Functions The control functions included in the Tunnel Thruster Control system: • Pitch control  • Command transfer Main Propulsion Azimuth Control Functions The control functions included in the Main Propulsion Azimuth Control system: • RPM control • Azimuth control • Command transfer 4.1 Pitch Control The function of the pitch controller is to move the propeller blades in accordance to the  control lever order. The actuator unit represents the interface between the remote control  and the main servo system, which performs the actual positioning of the blades.