2 years ago

MDA Technologies 5/2016

MDA Technologies 5/2016

BWIL and machine control

BWIL and machine control PLC/CNC. The machine control communicates all the parameters, like stroke positions and speed, using the data interface. After the cycle has started, all management and monitoring of hydraulic actuators and sensors is done by HS4. A robust position feedback with digital interface is used to monitor the closed loop ram operation. In a compact design, all valves are placed on a manifold directly on the cylinder. This provides ease of installation and maintenance along with an improved hydraulic response. Principle of operation The servo motor specifies the set-point via a toothed belt drive to the control valve. In the control valve, the rotational movement is converted into linear motion and is amplified by the hydraulic cylinder many times. The actual position of the working piston is guided directly on these back through the mechanical connection between the hydraulic cylinder and control valve. Thus, the hydromechanical control loop is closed. When switched, the attached high holding valve will keep the cylinder and the mass attached to it in the starting position. Energy savings For driving the internal gear pump, Voith equips the unit with the latest IE3 motor technology. The delivery capacity of the pump is 2 × 125 litres. In combination with the accumulator charging technology and an additional three 50-liter accumulators, this delivery capacity is sufficient to realize even long dynamic strokes if necessary. The combination of Voith’s well-known accumulator charging systems and the highly efficient internal gear pump provides significant energy savings compared to conventional drives. Photographs: Voith GmbH About Voith Turbo H + L Hydraulic and Voith GmbH Voith Turbo H + L Hydraulic is a subsidiary of Voith Turbo. Voith Turbo, a Group Division of Voith GmbH, is a specialist for intelligent drive solutions. Customers from highly diverse industries such as oil and gas, energy, mining and mechanical engineering, ship technology, rail and commercial vehicles rely on advanced technologies from Voith Turbo. Voith sets standards in the markets for energy, oil & gas, paper, raw materials, transport & automotive. Founded in 1867, Voith employs more than 20,000 people, generates € 4.3 billion in sales, operates in over 60 countries around the world and is one of the largest family-owned companies in Europe.

Pressure regulators introduced to trains ED05 series pressure regulators from Aventics combine control electronics, pressure sensor, and direct drive via a proportional solenoid in a single closed unit. The ED05 pressure regulators were originally developed for use in commercial vehicles. In addition, they have been reliably applied in mobile work machines. In trains, the pressure regulators from Aventics reliably control brake cylinders for comfortable braking or are used as air spring control valves for adjusting the access height to any station platform. With sturdy components made of die-cast aluminum and steel, the ED05 series complies with the fire protection and shock and vibration resistance requirements of the railway industry. Their operating temperature ranges from -40 to + 70 °C. The ED valves process pressure regulation tasks in a decentralized manner without additional parameter adjustment based on the set points of the superordinate train control. They dynamically and precisely control the movement and force without additional control settings. Integrated pneumatic return lines automatically compensate disturbance variables. The intelligent actuators communicate with the superordinate train control either directly via an analog interface or via a bus module. Flexible torque arm for an optimum assembly of torque motors KTR developed a torque arm for torque motors the use of which may increase the service life of the motor bearings by up to 50 %. RADEX-N FNZ compensates for axial and radial misalignment, transmits torques up to 12,000 Nm and can be used up to a temperature of 250 °C. It ensures a torsionally rigid connection of the motor while compensating for axial and radial motions resulting from misalignment, manufacturing inaccuracies or thermal expansion. It allows for reducing the load on the bearing while increasing the service life of the motor bearings. At the same time the special structure of the torque arm ensures a highly torsionally rigid torque transmission. As a result the torque motors connected are able to transmit the full performance regarding dynamics and control accuracy to the machine axis. By using the RADEX-N FNZ the user generates a detachable screw connection with the torque motor whereby necessary maintenance work such as replacement of bearing or gaskets is easy to perform. The shaft connection, e. g. clamping elements, can be assembled via the assembly window in the spacer when the torque arm is installed. The RADEX-N FNZ is fully made of steel. The future of automation: the modular X90 control Synchronous reluctance motors combined with high-performance converters PRODUCT NEWS B&R continues to open up new possibilities in mobile automation with its X90 product line for mas-tering mobile control and I/O tasks. The comprehensive set of standardized components is perfect for imple-menting flexible automation concepts. The heart of the X90 system is a controller with a powerful ARM processor and 48 multifunction I/O chan-nels. Basic features include interfaces for CAN, USB, Ethernet and the real-time POWERLINK bus system. The extremely robust cast aluminum housing provides space for up to four expansion cards. These can add additional I/O channels, interfaces and even a full-fledged safety controller with safe I/O. Additional expan-sion cards for WLAN, Bluetooth and GPS interfaces are in planning. All products in the X90 family are designed for use in harsh industrial environments. They can handle operat-ing temperatures from -40 to 85 °C as well as strong vibrations or shocks in addition to being resistant to salt, UV light and oil. The new firmware version 4.8 allows Sinamics S120 high-performance low-voltage converters to be combined with Simotics synchronous reluctance motors. This connection is suited for drive solutions in which the dynamic response of induction motors is no longer sufficient but the high performance of permanently excited synchronous motors would be excessive. Typical applications include winders, extruders or servo pumps. Control has also been optimized in terms of efficiency for generator operation, opening up additional scope for other regenerative applications. The modular system comprising Sinamics S120 lowvoltage converters and Simotics synchronous reluctance motors enables customized high-performance machine concepts to be implemented with the utmost speed and flexibility in industrial machinery and plant engineering. The synchronous reluctance motors achieve this by offering optimized vector control, generator operation optimized in terms of energy efficiency and dynamic response, as well as safety features and technology functions. Profibus and Profinet interfaces enable integration into the Totally Integrated Automation landscape. MDA Technologies 5/2016


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