Drives for lifts
3rd Quarter 2013
Electrical switching & drive systems & components
Varispeed supplies prestigious Yaskawa mechatronic products for mechanical engineering applications and industrial automation. Globally, about 150 000 lifts are driven by Yaskawa synchronous motors every year, together with more than 60 000 lift drives, and Yaskawa has a remarkable track record in the business.
The L1000A inverter drive is designed for three million full load starts. Cooling fans and capacitors have been carefully selected to give at least 70 000 hours of maintenance-free operation. It has advanced control functions to run induction and permanent magnet (PM) motor applications in geared or gearless elevator systems. With motor capacities ranging from 4 to 110 kW, the L1000A is capable of driving almost any elevator. In addition, it is quickly installed and can be integrated into almost any system.
Energy and cost efficiency are primary advantages of the L1000A drive. It is easy to set up and has a long maintenance-free life. Featuring performance life monitors, an automatic evacuation function (drops the cabin to the nearest floor in the event of a power failure) and advanced motor and drive technology, it offers gearless PM motor control and built-in braking transistors for all models up to 30 kW.
Elevator-dedicated functions, parameter names and units provide an interface in the language of users. This includes flexible I/Os for hassle-free operation with all common lift controllers, setup without un-roping and easy parameter copy. The ride profile adjustment with selectable ramp times and five-point jerk settings allows for smooth rides and high landing accuracy. Rollback prevention without a load sensor ensures a shock free start, overshoot suppression, anti-vibration control and robustness. The L1000A conforms to EN81-1 for one motor contactor control and is also approved for system design according to EN954-1 Cat. 3, stop category 0, ISO EN13849-1 PLd and IEC EN 61508 SIL2.
Varispeed can provide customised drive packages comprising motors, inverters with option cards, EMV filters and braking resistors. Interacting with each other, these core components provide an enhanced solution that offers more value than the sum of the parts.
For more information contact Rolf Lung, Varispeed, +27 (0)11 312 5252, [email protected], www.varispeed.co.za
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