3RW44241BC46 西门子3RW软启动系列工作原理及产品手册

西门子3RW软启动系列工作原理及产品手册
目前，三相电机通常作为用户终选择的驱动形式。但在很多情况下，直接起动或星三角起动等传统起动方式会引起机械冲击、电网电压骤降等问题。为此，西门子公司推出了全系列的软起动解决方案，即 SIRIUS 软起动器，包括标准型和高性能型，可适用于任何应用场合。SIRIUS 软起动器能够平稳起动/停止三相电机，轻松、GX的实现前瞻性的设备解决方案。2
SIRIUS 软起动器 — 优点一览• 软起动，软停车• 平滑起动• 降低电机起动时的峰值电流• 避免起动过程中引起电网电压波动• 减轻电网压力• 减轻传动系统中的机械冲击• 与其它起动器相比，显著节省空间和布线• 降低维护费用• 操作简便• 可与其它 SIRIUS 设备搭配
西门子新技术,内置旁路接触器,
可设置电机额定电流、脱扣等级和
电机过载功能复位.具有过载保护功
能和故障监控等功能.体积只有三角
起动器的一半.
软起动器的工作原理软起动器通过限制起动电流和起动转矩，能够可靠地防止起动过程中的机械冲击和电网压降。通过对可控硅导通角的控制，来降低电机起动电压，并在设定的起动时间内，将电机起动电压升高到额定电压。凭借这种电机电压的无阶跃控制，可以根据被驱机器的负载特性对电机进行调节，平缓加速机械设备，从而显著提高机械设备的运行性能，延长其使用寿命。总之：通过软起动/软停车，能够有效保护所连设备，确保生产运行平稳、可靠
可以与负载馈电器配合使用吗？当然可以。结合断路器，例如 SIRUIS 3RV，可以很容易地组成小型非熔断器保护的负载馈电装置。不仅如此，由于该产品集成了过载保护功能，用户还可快速实现节省空间的带熔断器保护的负载馈电装置1）。如何进行连接？连接方式与其它 SIRIUS 设备完全相同：使用螺钉型接线端子或弹簧型接线端子。根据需要，也可使用其它连接方式。能否进行通讯？当然。西门子软起动器具有通讯功能。高性能型软起动器还可以使用 PROFIBUS DP 通讯模块进行通讯
如何设置软起动器的参数？对于标准软起动器，使用电位计即可很容易地设置起动时间、起动电压和停止时间。其数值可以在常用设置范围内细调。这同样适用于具有电机过载保护功能的软起动器：通过电位计调整电机额定电流、脱扣等级和限流值。使用带有菜单显示液晶屏和操作键的高性能软起动器，可快速、舒适地设置各种功能；因此设备调试以及故障排查极为便捷
内三角接线方式的优点？对于内三角接线方式，软起动器的每相与各电机绕组串联。软起动器仅需承载相电流，该相电流大约等于电机额定电流（线电流）的 58 %。西门子软起动器能够自动检测接线方式，因此可以根据具体情况，使用较小的软起动器
在过去，对于标准应用，通常使用的是直接起动和星三角起动。而现在，软起动器的优势已是日益彰显。与机电式起动器相比，西门子 SIRIUS 软起动器能够改进自动扶梯、电梯、传送带以及泵的起动特性，起动更平稳。并显著降低对驱动系统的冲击，减轻电网压力，有利于降低系统等各方面成本。 西门子公司提供有全系列的软起动器，拥有各种规格，能与各种应用配套。例如，采用两相控制的 SIRIUS 3RW30 适用于功率Z大 55 kW 的标准应用，而 SIRIUS 3RW40 则能“软处理”功率范围从 5.5 kW ~ 250 kW 的各种复杂任务
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西门子3RW软启动系列工作原理及产品手册
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西门子3RW软启动系列
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：肖鹏
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邮箱：
我公司备有大量现货，价格从优，欢迎新老客户来电垂询！
西门子3RW软启动系列工作原理及产品手册