为了实现变频器驱动的粗纱机事故掉电时不断线，要求传动控制系统具有同步制动功能。
The transmission & control systems are demanded to have function of synchronous braking, in order to ensure that no any run-off will happen during power-off of roving machine driven by inverters.
本机可控制六台变频机，且具有同步调速功能。 本机可实现匀速运行，分段运行和两段随机运行三种方式。
The machine can run at three speed modes, that is, uniform velocity, sectional running and two-section random running.
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