TECHNOLOGY REVIEW - Camelot Technologies Group

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AUTOMATION SYSTEM The Wärtsilä 32 engine is equipped with the Wärtsilä unified controls (UNIC) engine automation system. The different systems available for Wärtsilä 32 engine are UNIC C1 and C2, described as follows. UNIC system components ESM MCM TCM IOM PDM LCP LDU Engine Safety Module Main Control Module Thermocouple Module Input Output Module Power Distribution Module Local Control Panel Local Display Unit UNIC C1 In the UNIC C1 engine automation system, the fundamental aspects of the engine control and safety are handled by the embedded control and management system. This includes engine speed and load control as well as overspeed protection, lube oil pressure and cooling water temperature protection. For the other parts, the design requires the majority of the sensors to be hardwired to a plant or ship control and monitoring system. UNIC C2 The UNIC C2 engine automation system provides a complete embedded engine control and monitoring system. UNIC C2 is a distributed and bus-based system in which the monitoring and control function is placed close to the point of measurement and control. This significantly simplifies both the on- and off-engine wiring. Additionally, the advanced functions in the system, e.g. for diagnostics and control, provide outstanding performance and reliability, and the need for off-engine systems is significantly reduced. The UNIC C2 system provides the following functionality: • • Complete engine safety system Complete local monitoring, including all readings, events and diagnostics • Speed and load control (electronic speed control by MCM if engine equipped with actuator, otherwise by mechanical governor) Complete engine control, including start/ stop, load reduction request, etc. Alarm signal provision Full system diagnostics Fieldbus interface • • • • The engine control system is designed to: • Provide a compact embedded engine control and management system for spacesaving applications, • Reduce installation and commissioning time by providing a very simple fieldbus-based interface that is delivered pre-tested and fully operational from the factory, • Achieve the highest possible reliability with components, e.g. sensors, designed UNIC C1 The UNIC C1 system provides the following functionality: Fundamental safety (overspeed, LO pressure, cooling water temp.) Basic local monitoring Hardwired interface to plant or ship control system. Speed and load control (electronic speed control by MCM if engine equipped with actuator, otherwise by mechanical governor) Start/stop management • • • • • UNIC C2 The engine control system is designed to: • Achieve the highest possible reliability, with components, e.g. sensors, designed specifically for the on-engine environment, • Reduce cabling on and around the engine, with a clear point of interconnection and a standardized interface, and • Provide high performance with optimized and pre-tested controls. 12
specifically for the on-engine environment, • Considerably reduce cabling on and around the engine through a busbased architecture, with a clear point of interconnection and with a standardized hardwire and fieldbus interface, and • Provide high performance with optimized and pre-tested controls. UNIC C2 shares the same mechanical design as the UNIC C1, and can therefore easily be retrofitted when needed. Common components and functionality also simplifies operator training and spare parts logistics, since all UNIC options use the same basic design and components. 13
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TECHNOLOGY REVIEW - Camelot Technologies Group

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