80026-146-56-R罗克韦尔 电源模块库存实货

　　罗克韦尔自动化以 Kinetix 5500 伺服电机和 VP 低惯量伺服电机系列扩展了其集成架构产品线。将它们组合成一个系统后，即可提供经济实用的运动控制解决方案，为您带来在当今行业竞争中致胜所需的高性能和可扩展性.

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　　Kinetix 5500 采用创新的紧凑型设计，所需的面板空间更少，连接非常简单。此外，您只需使用一根电缆，这样可以大幅缩短安装和调试时间。反馈、电机制动和电机电源信号均集成在一根电缆中 – 简化了接线并降低了库存成本。为进一步增强设计，Kinetix 5500 还配备了可实现多种拓扑的双以太网端口。

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　　Low frequency CbM vibration measurements are generally considered to be within a 0.1 Hz to 10 Hz or 6 rpm to 600 rpm bandwidth. Low frequency applications are more complicated than general machinery monitoring because motion below 10 Hz (600 rpm) produces very little vibration. While it is well understood that measuring high frequency vibration data with high sensitivity sensors can help to detect certain faults (bearing spalling, gear meshing, and pump cavitation) and give potential insights into the remaining useful life of an asset, it should be noted that important information is also available closer to DC or 0 Hz. For this reason, special purpose noncontact sensors like eddy current displacement or proximity probes can be used to detect motor shaft displacements or misalignments to a high degree of accuracy at 0 Hz and even high frequency vibrations, but they can be difficult to position in some applications compared to MEMS and are typically more expensive. MEMS are in no way designed to replace eddy current sensors that can detect displacements below 0.1 nm in extreme conditions.3 However, for designers wishing to implement a low cost CbM system or even a wireless system that can detect acceleration down to 0 Hz, MEMS accelerometers can offer a cost-effective alternative.

　　Industries like paper and pulp processing, food and beverage, oil and gas, wind turbine power generation, and metal processing and mining all use very low speed motors at speeds lower than 1 Hz; therefore, it is critical for a vibration sensor to be able to detect these fundamental rpm speeds, especially when trying to detect imbalance and misalignment faults. Specialized low frequency IEPE or piezo sensors with a frequency response starting from 0.1 Hz are available while general-purpose sensors starting from 2 Hz to 5 Hz are more common. One key advantage of MEMS over piezo sensors is the fact they can detect down to 0 Hz yielding tilt information. This is not possible to test on a modal shaker, so measurements are limited to 0.01 Hz as shown in Figure 2. It should be noted that the piezo sensor is significantly more expensive and, as expected, has a better noise performance from just under 0.1 Hz upward, but below this, the MEMS sensor has better noise performance down to 0.01 Hz and on to 0 Hz. This low frequency performance is a feature on all axes of multiaxis MEMS accelerometers, potentially giving maintenance and facilities engineers further insights into the low frequency dynamics of their assets previously not possible even with highly specialized piezo sensors.