对于交流双速电梯，府串联启动阻抗启动并公道调整切除阻抗的时间，保证加速过程平滑过渡。
For the AC double speed elevator, the government series starting impedance is started and the time of the impedance is adjusted to ensure the smooth transition of the acceleration process.
本文以三层电梯为设计对象，结合三垦vm 06系列恒转矩高性能变频器，开发出一套交流双速的PLC电梯控制系统。
In this paper, three elevators for the design of objects, combined with Sanken VM06 series of high-performance constant torque converter, developed a two-speed exchange of PLC elevator control system.
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