3rd Quarter 2010Electrical switching & drive systems & components
Variable displacement = flexibility + control.
The variable displacement technology built into the TSW8 series of radial piston motors from SAI provides flexibility in terms of speed and power regulation, load and braking ability. The high volumetric efficiency minimises leakage and enables accurate movement and positioning to be achieved.
These features make variable displacement motors well suited to applications with high external loads (over 20 tonnes), self-propelled vehicles, augers and winches. The hydraulic motor options in the TSW8 comprise a seven piston radial piston motor and incorporate a planetary gearbox.
Drive flexibility
The company’s new range of robust compact modular wheel drives achieve high load carrying capability and are available with integrated static and dynamic brakes, integrated speed sensors and continuously variable displacement. They have a programmable control that allows regulation of the ramping up and down of the motor displacement.
The high overall efficiency of the motor enables the recovery of the inertial energy of the vehicle when hydraulically braking the wheels. This form of power regeneration further increases the efficiency of the machine.
Traction control
Even greater steps in re-inventing the wheel can be achieved from integrating suspension and steering systems to offer independent traction control to each wheel. SAI has recently developed electronic proportional control of the motor displacement and this offers many possibilities in terms of distributing the traction to each wheel, according to the actual adherence of each wheel with the ground.
SAI’s independent traction control
The anti-slip control system uses sensors to detect whether the wheels are spinning and then automatically reduces the engine power. This optimises acceleration, especially at the start, when leaving a corner and on wet tracks.
Precise detection of complex rotational movements Beckhoff Automation
Electrical switching & drive systems & components
The EP3751-0260 EtherCAT Box module by Beckhoff connects an acceleration sensor with an inertial measurement unit - a gyroscope. This provides accurate detection of acceleration and rotational motion in addition to shock, vibration and tilt measurement, both as preprocessed values and as raw sensor data.
Read more...Energy management system for electrohydrostatic actuation systems
Electrical switching & drive systems & components
In the machine manufacturing industry, more drive systems are being converted from servo-hydraulic throttle to electrohydrostatic actuation systems. The four-quadrant capability of the electrohydrostatic pump unit and servo drive used in this technology, in combination with the new Moog energy management system, allows regenerative power flows generated during braking or pressure relief to be stored and reused.
Read more...Drive solution for stacker reclaimer
Electrical switching & drive systems & components
Hägglunds Drives South Africa recently completed a retrofit project on the bucket wheel of a stacker reclaimer at Richards Bay Coal Terminal. The project entailed replacing a gearbox drive solution with a direct drive solution from Hägglunds Drives SA.
Read more...Kamoa-Kakula power pack order for SEW-EURODRIVE SEW-EURODRIVE
Electrical switching & drive systems & components
With well over 100 units already delivered, SEW-EURODRIVE is set to continue supplying Ivanhoe Mines’ prestigious Kamoa-Kakula Copper Complex in the Democratic Republic of Congo.
Read more...Seven ways to reduce production downtime on the plant
Electrical switching & drive systems & components
Production downtime is one of the biggest risks in the manufacturing industry. Follow these seven tips to reduce machine downtime in your production line.
Read more...The time is now to implement a motor management strategy Schneider Electric South Africa
Editor's Choice Electrical switching & drive systems & components
Motor management plays an all-important role in controlling motor energy costs in various industries, segments and applications. Research and practical experience have consistently shown that effective motor management practices can result in significant energy savings, reduced operational costs, and improved overall system reliability.
Read more...Rapid overhaul of compressor motors ACTOM
Electrical switching & drive systems & components
Marthinusen & Coutts Zambia was requested by a smelter based in the Copperbelt to provide an in-country repair solution for its two critical 4,5 MW compressor motors. The company was given only three weeks in which to overhaul and commission the motors.
Read more...PC-based motion control on a labelling machine Beckhoff Automation
Editor's Choice Electrical switching & drive systems & components
For 50 years, Bausch+Ströbel in Germany has been developing packaging and production systems for the pharmaceutical industries. The company’s goal is to offer the best technical and economical solutions for the challenges of modern industry. Its new ESA1025 labelling machine shows how this is achieved with PC-based control from Beckhoff as the central motion controller.
Read more...Thrust for hybrid electric flying
Editor's Choice Electrical switching & drive systems & components
Several leading academic institutes in Germany are collaborating on the future of hybrid electric flying. The partners are researching an entirely new propulsion system for medium-range aircraft with up to 35 passengers.
Read more...Precise knowledge for precise applications
Electrical switching & drive systems & components
Aerotech has been supplying standard product solutions such as motors, drives, controls and positioning tables since 1970. Customised motion subsystems include positioning systems on granite structures with undercarriage and vibration isolation, and also external measurement systems.
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