999 Mitsubishi

  • Summer is here | time to update the yacht’s HVAC systems

    Posted on July 24, 2017 by Stege

    Summer is here | time to update the yacht’s air conditioning

    When prestigious luxury yacht Sanssouci Star was refurbished, no compromise was made in combining its classic appeal with super-modern high-tech equipment. As a result Mitsubishi Electric FR-F800 inverter drives were selected to provide an intelligent, reliable and energy efficient control for the engine room HVAC system.

    The Sanssouci Star is one of a few remaining large ocean-going luxury yachts that retain an air of period charm, but have benefitted from a full state-of-the art refit. Measuring 53.5m in length with extensive teak decks and an English saloon that wouldn’t look out of place in a stately home, it is outfitted to the highest levels of luxury.

    Able to travel continuously for 20 days before refuelling, the Sanssouci Star can take its passengers anywhere in the world. Since the yacht is a commercial vessel offering charters for events such as weddings, receptions, and exclusive private outings, performance and reliability are essential.

    Pressure and temperature control

    Built in Germany in 1982, the Sanssouci Star has just undergone major refurbishment. One of the key upgrades was to the HVAC system for the engine room. For the optimum comfort of crew working in the engine room, the HVAC system now combines pressure and temperature control. A digital pressure sensor and an analogue temperature sensor both provide direct inputs to a Mitsubishi Electric FR-F840 HVAC drive.

    The first level of control for the engine room fan is provided by the differential pressure transmitter which measures the difference in pressure between the engine room and the external environment. When the overpressure in the engine room reaches the pre-set level, the system switches to temperature control.

    As the temperature rises, the speed of the fan is increased according to a curve set in the FR-F840. Full fan speed is achieved at 35°C. Different temperature modes can be selected on the drive’s front panel as required.

    EFFICIENCY AND ENERGY SAVING

    The Mitsubishi Electric FR-F800 series drives are specifically designed and optimised for HVAC applications, offering increased motor efficiency and maximum energy savings. Embedded motor control algorithms optimise the motor voltage and current based on the desired load. The drive also includes energy monitoring capabilities to capture and display actual energy usage.

    Further features include on-board preventative maintenance functions to reduce unscheduled downtime, and an optional LCD display that provides accurate, time-stamped logging and real-time clock scheduling functions.

    Go here for Mitsubishi HVAC drives at discounted prices


    This post was posted in Inverters, Applications and was tagged with Energy saving, HVAC

  • Mitsubishi smart drives combine fine control and energy savings

    Posted on July 19, 2017 by Stege

    New FR-A800 inverter drives boost energy management

    Mitsubishi smart drives combine control and energy savings

    It is widely recognised that when correctly applied to motors, smart variable speed drives like Mitsubishi FR-A800 Series make significant energy savings, and improve machine control and performance. This has been one of the main drivers for their adoption.

    When reducing motor speed, you save energy proportional to the square or cube law depending on the application of the reduction. Many application, such as HVAC may never need full speed and power, so a drive can be adjusted manually or automatically to a lower level to optimise energy savings without affecting the performance of the system. Other applications may require full speed operation for part of the time of cycle, then reducing to half or a quarter speed.

    A VSD can be set to provide this so provide a variable output, either based on a clock or timer. Or in response to real-time sensor measurements. Some applications may be required to stop the motor altogether for part of a cycle, and this is easily controlled by the drive. Stopping or slowing a motor down can also provide another form of energy saving.

    Regenerative braking.

    Many applications have deceleration stages in their duty cycle. That is when kinetic energy is removed from the moving motor load. Traditionally this energy is simply lost through braking resistors or mechanical brake. However, a regenerative drive can capture this energy and   feed it back into the mains, leading to further significant energy savings. Regeneration is also possible if a load is lowered, if a conveyor runs downhill, for example as in an escalator.

    It is notable that high performance smart drives enhance an industrial motor’s dynamic performance towards servo levels of performance, making it suitable for axes where extra precision is required.

    More than energy saving

    Discrete parts manufacturing, process control and building management are becoming more intelligent, and all parts of the system communicate with one another to optimise overall performance.  The ability of smart VSDs to accurately control the speed of motors also makes them an important part of machine and automation control. To support this, a wide range of open and proprietary communications networking is available, ranging from Industrial Ethernet to BMS.

    As an example, when drives are integrated with servos over specialist networks such as Mitsubishi Electric’s SSCNet motion network. While the servos control the precision axes in the system, they can communicate with the industrial motors on the general axes to improve overall systems performance.

    Go here for Mitsubishi FR-A800 high performance drives


    This post was posted in Inverters, HMI, Programmable controller, Servo systems and was tagged with Energy saving, Productivity gains, machine automation

  • CNC controller integrated in PLC controls complex production

    Posted on July 14, 2017 by Stege

    image of Mitsubishi C80 CNC CPU with PLC rack

    New CNC controller integrated with PLC controls complex production lines.

    Mitsubishi Electric has launched a hyper fast CNC controller that sits on the high-speed rack used by its powerful iQ-R Series PLC platform. Offering nanometre scale control over machine tool functions, the new C80 CNC controller and integrated iQ-R platform manages complex production lines with a single control platform.

    The advantages of integrating a powerful CNC controller with Mitsubishi’s most advanced modular iQ-R PLC, is the performance gain from having both devices communicating via a high-speed bus. Together they can coordinate and manage a complete production line from the robots and machine tools to the HMIs and overhead displays. Fast data management and perfectly synchronous operation not only speeds-up production, but improves quality and allows for more operations to be packed into a smaller space.

    Not only does this improve overall performance, but due to ease of integration and a common programming environment Mitsubishi’s GX Works3, it can save a considerable amount of time in the design and commissioning phase. Being faster to install and commission reduces set-up costs, while replacing on-machine controls with the unified system reduces hardware costs for controlling a CNC production line for example.

    Originally developed for the automotive industry, the combination of the C80 CNC controller and iQ-R PLC the systems applies equally to other complex automated manufacturing applications that would otherwise have employed several different CNC solutions and controllers. Configured with up to 3 CPUs (21-part systems and 48 axes) for example, the C80 can control highly complex machines.

    Retrofitting

    The C80 and iQ-R control platform is suitable for retrofitting into existing machines to give a capacity beyond any existing CNC or PLC solution. With the common control platform established, future changes and upgrades are faster to implement and less costly, as adding modules to an existing PLC rack is simpler and cheaper than purchasing and integrating a new controller.

    Improving machine performance and safety

    A reduced cycle-time for commands within the control platform is the key to increased system speed and performance. By using one single automation platform that is communicating via high-speed data bus, optimal communication is achieved between the servo-drives. In addition to the added speed and precision, the C80 Series provides a range of safety features collectively called the Smart Safety Observation Function.

    The new lower cost combination enables a full production line control system to increase its added value and reduce its Total Cost of Ownership (TCO) in five key areas: improvements in productivity, ease of use, connectivity, functional safety and reliability.


    This post was posted in News, Programmable controller, Servo systems and was tagged with Productivity gains, machine automation, CNC

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