西门子6AV6647-0AC11-3AX0

6AV6647-0AC11-3AX0

软启动器是用于电动机起动控制的设备，通过逐步增加电机电压来减小电机的启动电流冲击，延长电机寿命，减少设备故障和维修成本。以下是软启动器的主要参数及其作用：

　　加速时间：软启动器控制电机逐渐增加电压的时间，一般单位为秒。加速时间的设置应根据电动机的负载情况和起动电流需求，通常为1-10秒之间。

　　初始电压：软启动器起动时输出的低电压值，一般单位为百分比或电压值。初始电压的设置应根据电动机的特性曲线和负载情况，通常为30%-60%之间。

　　大电流：软启动器控制的大电流值，一般单位为安培。大电流的设置应根据电动机额定电流和负载情况，通常为1.5-2倍额定电流。

　　断电时间：软启动器在电源突然断电时，延迟切断电机电源的时间，以保护电机。断电时间的设置应根据电机的转动惯量和负载情况，通常为0.5-5秒之间。

　　电机转向：软启动器应支持正反转功能，需要设置电机正反转的开关或信号输入。

　　过载保护：软启动器应具备过载保护功能，需要设置过载保护值，一般单位为电流百分比或电流值。

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