Specification Types: Introduces the 5 Rolls-Royce specification types, clarifying their role and scope of application.
RRDS (Rolls-Royce Design Standards): internal document providing information on design guidance, material selection, etc., not used for component definition.
RRES (Rolls-Royce Engineering Standards): an external generic document that is followed by suppliers without separate approval, but requires approval for specialised processes and is used for component definition.
RRMS (Rolls-Royce Material Specification): External document specifying requirements for material composition, manufacturing methods, properties, etc., used for component definition.
RRP (Rolls-Royce Process Specification): an external document describing the requirements for the operation of the process, listing the key control variables, etc., mostly related to special processes, used for the definition of the component or specified by other specifications.
RRQ (Rolls-Royce Quality Standard): an external document covering component or material quality standards, used for component definition and may relate to NDT process specifications.

Specification parameters
Model and Part Number: Model number H1127 – 0101, Rolls-Royce part number 000068308 This unique combination acts as an exclusive ‘ID card’ for the product, facilitating accurate identification and management during production, sales and after-sales, and highlighting its specific positioning and design guidelines within the Rolls-Royce Marine Controller product line.
Frequency: The working frequency is set to H6045/433 MHZ, which has been carefully adjusted to effectively avoid signal interference with other electronic equipment on the ship, ensure stable and high-speed data transmission and command interaction between the controller and various controlled equipment, and maintain smooth operation of the ship control system.

PIC code version: Currently at version 2.2, PIC (Peripheral Interface Controller) code is a key part of the controller’s core operating procedures, and version update means continuous optimisation of functions. 2.2 version further improves the compatibility with all kinds of equipment on board, the precision of control algorithms and the stability of the system operation on the basis of the previous version, which brings a better experience for users. Although the weight information of this controller is not yet available, we can refer to other marine controllers of the same brand. Reasonable weight design usually takes into account the ease of installation of the equipment and the stability of the vibration environment of the ship, which will not cause too much burden to the ship’s load and space layout, and at the same time, it can resist the vibration of the ship’s hull by its own weight and solid mounting structure, to ensure that the equipment works properly.

Skill features
High reliability
Material selection: the probability of using high-strength, corrosion-resistant special alloys to create the shell, can effectively resist seawater erosion, salt spray corrosion and humid air, long-term in the harsh marine environment, but also to prevent the shell from rusting, deformation, for the internal precision electronic components to provide reliable physical protection.
Manufacturing process: Referring to the products of the same brand, the internal electronic components may be strictly screened and assembled through high-precision chip and welding process, with solid solder joints and stable electrical connections. Advanced potting technology is used in production to encapsulate key circuit modules in special insulating and moisture-proof materials to enhance vibration and shock resistance as well as waterproof and dustproof capabilities, significantly reducing the incidence of failures caused by environmental factors.
Anti-interference design: It is very likely to be equipped with multiple electromagnetic shielding measures, from the circuit board layout to the overall structure of the shield set up, all-round blocking the external electromagnetic interference on the internal circuitry. Software algorithm level, the use of advanced anti-interference filtering technology, real-time monitoring and processing of input and output signals, automatic identification and elimination of interfering signals, to ensure that the controller receives and sends commands accurately, to maintain stable operation of the ship control system.

Precise control
Control algorithm: Built-in advanced and complex control algorithm can accurately calculate the control parameters of each equipment of the ship in real time according to the running state of the ship, the feedback data from the sensors and the instructions of the operator. For example, when adjusting the engine speed, it can integrate the ship’s load, sailing speed requirements, sea conditions and other factors to accurately control the amount of fuel injection or motor output power, so as to realise precise adjustment of the engine speed within a very small error range.
Sensor co-operation: It works closely with all kinds of high-precision sensors such as speed sensors, pressure sensors, position sensors, etc. on the ship. Rapid and accurate collection of sensor data, timely grasp of the actual operating conditions of the ship’s equipment, based on which control decisions are quickly made to achieve fine control of the ship’s equipment, to meet the stringent requirements for the ship’s control accuracy under different navigational conditions, such as entering and exiting ports, ocean voyages, and coping with adverse sea conditions.

Strong compatibility
Hardware interfaces: Referring to other Rolls-Royce marine controllers, H1127-0101 is likely to have rich and diversified standardised hardware interfaces, such as common RS-232 and RS-485 serial communication interfaces, CAN bus interfaces, and various types of analog and digital input and output interfaces. It is convenient to be physically connected with the ship’s engine control system, generator control system, navigation system, steering control system and other devices to achieve data sharing and collaborative work between the devices.
Software protocol: Support MODBUS protocol, PROFIBUS protocol and other general industrial communication protocols, as well as specific communication protocols for the marine industry. At the software level, it can be seamlessly connected with different brands and models of marine equipment without complex interface conversion or custom development, which improves the efficiency and flexibility of marine system integration and reduces the system construction cost.

Easy Maintenance
Modular structure: the overall design or modular concept, divided into power modules, communication modules, control computing modules, input and output modules and other functional independent modules. When the module failure, maintenance personnel can quickly locate and directly replace, without large-scale dismantling and testing of the entire controller, greatly shortening the maintenance time and reducing the difficulty of maintenance.
Fault diagnosis: It is very likely to be built-in perfect fault diagnosis system, real-time monitoring and analysis of its own operating status. Once a fault is detected, a fault report containing detailed information on the type, location, and possible causes of the fault will be generated immediately. Maintenance personnel can read the report through the controller’s own display or connected to an external computer, targeted maintenance, reducing troubleshooting time, improve maintenance efficiency.
Convenient maintenance design: The enclosure is designed with full consideration of maintenance convenience, with easy-to-open and close access doors or covers, neat and orderly internal wiring, clear labelling, and key components are equipped with easy-to-plug connection interfaces, making it convenient for maintenance personnel to carry out daily inspections, cleaning, and replacement of components and other maintenance work.