Control Voltage Backup
The Asys Control Voltage Backup System is a device that ensures continuous power supply to a vessels control equipment. This PLC-based system offers a number of advantages over conventional relay-based backup systems.
It offers greater flexibility in terms of modification and extendibility. The acceptable voltage range, for example, can be customized to specific requirements. Also, additional chargers can be installed without the expenses associated with installing another backup system.
It is also able to detect voltage variations with greater accuracy, and because of the absence of any moving parts, it is more reliable than a relay-based system.
All of these advantages, along with the fact that the Asys CVBS is virtually maintenance free, represent greater cost effectiveness in the short and long run.
Following are some additional features:The system can be designed to work with control devices of any voltage (12, 24, 36, 48 VDC, or 110VAC, etc.), any types of chargers or UPSs The system can be designed and customized to specific client requirements. For example, additional displays can be installed in a separate location. The system operates in two modes. In the automatic mode, if a problem occurs in Charger 1, the system will automatically switch to the secondary source and an alarm signal will be sent to the general alarm system.the manual mode the source can be switched manually to any of the two chargers. The manual mode is normally used for testing, measurement or troubleshooting. The system can be fully integrated with a general alarm system as well as the Asys Data Management System
System ComponentsMain Charger Auxiliary Charger PLC Controlled Unit Battery group (optional)
DE Control System
Diesel Engine Control System (DECS) The Asys Diesel Engine Control System monitors and controls the operation of a vessels major diesel engines, which are used to power the bow thrusters, generators and main engines. In addition to starting and stopping a diesel engine, this system can be configured to make up to three attempts (or more) to start an engine in case of initial failure. It is also capable of integrating the slowdown and shutdown functions, and can allow a pre-stop cool down period for generator and bow thruster engines. The Asys DECS also monitors and controls the main parameters of a diesel engine, such as pressure, temperature, RPM, frequency, etc. Although, the Asys DECS may have different operational features depending on the specific application, the main functions include: Starting and stopping of the pre-lube pumps Starting and stopping of the engine in automatic and manual mode Multi-attempt start function Pre-stop cool down period for generators and bow thruster engines Monitoring and control of main parameters such as pressure, temperature, RPM, voltage, amperes, etc. (including the gear lubrication system) Ability to slowdown and shutdown the engine in case of overspeed, overload, overheating, or lubrication oil-pressure failure Load control and pitch propeller controller interaction for bow thrusters Generator set switchover control
System Components Central Processing Unit Digital and analog I/O modules Digital and analog sensors for the systems parameters Circuit breakers, relays, specific gauges and indicators
DE Pressure Monitor
The Asys Diesel Engine Cylinder Pressure Monitoring System has been designed to obtain and analyze valuable information from a diesel engine with the goal of extending its life, increasing its operational safety, and enhancing overall fuel efficiency. The system periodically and non-intrusively inspects and measures time-domain, frequency-domain and process-related data. It is also designed to monitor and analyze the pressure curve of diesel engine cylinder(s) with a low rpm (up to 600 rpm), which provides valuable data on the health of a diesel engine in 2 or 4 strokes. The system can also calculate at any given time, the precise load of the engine, which can be used for the Load Control System of the ship. All of this information helps in the evaluation of the mechanical condition as well as the operational performance of the engine. It also enables the operator to improve or maintain its economic performance.
The advantages of the Asys Diesel Engine Cylinder Pressure Monitoring System can be summarized as follows: Visualization, trending and archiving of the engines parameters Longer engine life Reduced downtime Early fault detection Better maintenance planning Reduced maintenance costs Increased operational safety Ease of technical reporting Better engine timing adjustments Higher fuel efficiency Reduced emissions through combustion optimization
Integration with the Asys Data Management System or Load Control System System Components Industrial computer Software that permits the visualization of all signals, calculates the load for each cylinder, trends, archives, etc. Pressure sensors (high temperature resistant, very precise and accurate, reliable, and with a response of 5ms or less) Data acquisition board (converts signals from cylinder pressure sensors into a standard format)
Load Sharing System
The Asys Load Sharing System manages several power sources in parallel to ensure that all engines are proportionately loaded according to their respective capacities. Such synchronized usage prevents excessive load over a single engine and ensures that all engines are at the same stage of their lifespan. This facilitates better maintenance planning and prevents major safety concerns resulting from unexpected engine failures. An important feature of the Asys LSS is that although it communicates with the generator controls, these controls are allowed to work independently even if a fault is detected. This is to ensure that the operators are able to retain as much control as possible in an emergency situation. The main functions of the Asys LSS can be summarized as follows:
Proportionate loading and usage (in terms of accumulated hours) of all generators, based on their capacities Monitoring and control of the main parameters of the generators, such as frequency, power, voltage, amperes, and power factor Establishing a sequence of starting generators (including cases when one or more generators are inoperative) Interaction with the Diesel Engine Control System in order to control the start and stop sequence of a generator. Load-dependant starting and stopping in response to consumption requirements Synchronization of the generator for safe connection to the bars Controlling the opening and closing of the generators circuit breakers Automatic start of generators in case of dead bus (Cold Black restart) Preferential trips for selected users based on consumption and criticalness Blocking heavy consumers Load shedding Essential generator stand-by selection
System Components Control Processing Unit Digital and analog I/O modules Digital and analog sensors for the systems parameters Circuit breakers, relays, specific gauges and indicators
Config Alarm System
The Asys Configurable Alarm System is an alarm, monitoring and control system for digital and analog signals with both marine and industrial applications. It represents a new concept in alarm systems as it eliminates the need for intervention by programmers for most modifications. Instead, users are able to add new alarms, alter names of alarms, activate/deactivate alarms, change sensor types, rescale analog values, adjust alarm delays, and more. Users can even configure the system such that specific outputs (for example, closing a valve) are activated automatically when certain alarm conditions are met. With up to ten password levels and a user-friendly interface, the system is virtually maintenance free and can handle practically any number of inputs/outputs.
The main features of the Asys Configurable Alarm System include: Activation/deactivation of inputs/outputs and alarms Ability to establish the type of digital input: Normal Open/Normal Close Adjustable low and high levels for analog input alarms Adjustable alarm delay for digital and analog inputs Scaling options for analog inputs Configurable links between inputs and outputs Filter function for analog inputs Group alarms Gap alarms (difference from average alarms) List of existing alarms Short and long term archives Graph and trend functions Average values calculation Tracking system and hardware faults Option of installing additional screens in different locations Integration with the Asys Data Management System
System Components Central Processing Unit Digital and analog I/O modules HMI Digital and analog sensors
The Asys Ballast Control System for vessels ensures the control and monitoring of the ballast tanks, pumps and valves during the loading and unloading process to prevent torsion and mechanical stress. This state-of-the-art PLC and HMI basedoffers centralized real time control and monitoring of the status of the tank levels, valves, pumps and pipes, all of which are displayed on a single screen for easy access and maneuverability. In a semiautomatic control mode information regarding the list angle, the vessels structure stress and even heeling is displayed on the screen with warnings and alarm levels. Decisions in response to the information obtained from the system, however, are left to the operator to make. The Asys BCS also incorporates the visualization and control of the stripping process of the ballast tanks. With just a single command the system switches to the screen representing the stripping installation. Another innovative feature of the Asys BCS is that it allows the user to configure critical analog inputs such as scaling, high and low alarm levels, and alarm delay settings, among other things. This flexibility gives more control to the user and eliminates the need to call for service every time a modification is required. The Asys BCS also saves on operation costs by reducing the personnel involved during the loading and unloading process.
Additional features of the Asys Ballast Control System include: Open system capable of integrating all existing standard sensors User friendly interface Choice of HMI from, operator panels (OP), touch panels (TP), multifunctional platforms (MP), panel PCs, or graphic-interactivetouch screens with different display sizes Partial automation of ballast system through integration with torsion and stress sensors of the vessel System and hardware fault indication Integration with the Asys Data Management System
System Components Central Processing Unit (PLC or PC) Digital and analog I/O modules HMI Command elements for valves, pumps and actuators Analog sensors for tank levels, pressures and valve opening angle Digital valve status indicator Electro-inclinometer, strain gauges and transmitters
The Asys Data Management System seamlessly integrates all automated systems on board a ship. It is an advanced yet easy to use solution that offers flexibility, reliability and added safety all while helping reduce overall operational costs. The Asys DMS is based on a state-of-the-art distributed process control technology with a flexible system configuration that can be extended according to your evolving needs. It can be linked to other networks on the ship such as the integrated navigation system, dynamic position system or administrative system in addition to other systems and devices listed below. The Asys DMS utilizes PLC and HMI technology with the newest applications available in the market. All connections are through serial (industrial protocols) or fiber optic cables, which allow quick exchange of data. And since each system works independently, a failure in one system does not affect the functionality of the DMS or other components of the network.
Additional features include: Multilevel password Commando transfer system Redundancy for all systems and communication links Operability from each of several workstations installed in different locations such as the engine control room, bridge, safety stations, etc.
The Asys Data Management System is capable of integrating the following systems and control devices: Alarm and monitoring system Power management system Ballast control system Cylinder pressure monitoring system Load sharing system Diesel engine control system Electrical propulsion system Load control system Pitch and rudder control system Bridge navigation system Fire systems Public alert system Broadcasting and telephone system Window wiper cleaning systems Consoles and switchboards Motor control centers Stand-by pump controls Purifier controls Boiler controls Compressors controls Valve controls Special logic Accessories
Load Control System
The Asys Load Control System monitors and controls the entire propulsion system of a vessel in order to establish the optimal load of the main engine(s). This powerful yet easy-to-use system offers a number of advanced features including dynamic control of the pitch angle of the propeller, and the RPM of the main engines. The Asys LCS can be installed in a wide range of vessels from the simplest, to the most sophisticated. It offers the dual advantage of reduced fuel consumption and extended engine life, which means that any costs associated with the installation of the system are quickly recuperated.
The main features of the system include: Dynamic control of the RPM and pitch Clutch Control User friendly HMI with graphic curves Graphic representation and adjustments for load, combinatory, ramps and function curves Ten password levels for controls and parameter modifications Flow meters in order to measure instantaneous fuel consumption Interface for joystick and DP-system Distributed Peripheral Failure detection by self-test functions Telegraph levers synchronizing function Wrong way alarm Alarms including long and short term archives trends and messages Back-up system bypassing the LCS Up to five control stations at engine control room, bridge, left wing, right wing and safety station Integration with the Asys Data Management System
Available Operation Modes Individual pitch and RPM Fixed RPM Combinations of pitch and RPM to follow the optimum load curve Load Increase Control (LIC) 100% power function Responsibility function (for more then one control station) Interface for joystick and DP-system Crash maneuver
The new I/O industrial controller represents a low-cost high efficiency custom made solution for small applications. The model shown is based on Amtel AT90S2313 microprocessor and has up to 8 input and 7 outputs. The program and I/O allocation can be easily changed and it is fitted for analog outputs and inputs implementation. The model shown is able to control motors and inductive load without supplementary filters or design board modifications.
Main characteristics Supply voltage 120VAC; Control voltage for microprocessor: 5VDC; Relays voltage: 12VDC; No of inputs: 8 at 5VDC; No of outputs: 5 of 15A relays and 2 of 40A relays; Communication port for program downloads; Up to 1000 program loadings.