1756-L84E  A-B罗克韦尔 高性能控制器

艾伦-布拉德利1756-L84E是ontrollogix控制器。这款控制器属于高端控制器，设计现代，连接性强。该控制器非常适合大型应用，因为它可以用来连接和控制输入和输出设备，特别是128，000个离散输入和输出以及4000个模拟输入和输出
它支持本地I/0控制以及利用一种或多种通信协议(如以太网/P、控制网、设备网、数据高速公路Pus、远程/0、SynchLink和第二方过程和设备网络)实现分布式I/O架构
1756-L84E配有集成通信端口，如-(1)个以太网I/P。该嵌入式端口支持10/100/1000 Mbps传输速度，可用于通过同一以太网内的信息指令与人机界面(HMD、监控和数据采集(SCADA)及其他控制器进行通信。USB端口是支持12 Mbps通信速度的USB2.0。

1756-L84E

1756-L84E有一个高达20MB的内置用户内存。可以使用2GB安全数字(SD)卡1784-SD2安装扩展非易失性存储器。这种控制器不需要电池来保存易失性存储器的内容，因为它带有现代能量存储解决方案，消除了使用电池的需要，使控制器用户和环境友好。
Allen-Bradley生产的1756-L84E ControLogix 5580控制器是一种高性能控制器，具有高达128，000个/0，可增强机器自动化并提高性能。它配备了20MB的用户程序存储内存，并允许通过可选的预装2 GB安全数字卡(1784-SD2)进行扩展和长期程序存诸。控制器上嵌入了一个诸能模块，无需额外的电池，整个控制器在1.2V DC下消耗5毫安的背板电流，在5.1V DC下消耗1.2室安的背板电流。1756-L84E的工作散热为21.2 BTU/hr，并在USB端口至背板、以大网端口至查板和USB端口至以大网端口之间提供50V隔离，采用在1000V交流电下测试1分钟的基本绝缘.
故障排除①查明断点予以修复；②检查绕组极性；判断绕组末端是否正确；③紧固松动的接线螺丝，用万用表判断各接头是否假接，予以修复；④减载或查出并消除机械故障，⑤检查是还把规定的面接法误接为Y；是否由于电源导线过细使压降过大，予以纠正，⑥重新装配使之灵活；更换合格油脂；⑦修复轴承。

1756-L84E

The Allen Bradley 1756-L84E is an ontrollogix controller. This controller is a high-end controller with a modern design and strong connectivity. The controller is ideal for large applications as it can be used to connect and control input and output devices, especially 128,000 discrete inputs and outputs and 4,000 analog inputs and outputs
It supports local I/0 control and distributed I/O architectures utilizing one or more communication protocols such as Ethernet /P, control network, device network, data highway Pus, remote /0, SynchLink, and second party process and device networks
The 1756-L84E is equipped with integrated communication ports such as -(1) Ethernet I/P. The embedded port supports 10/100/1000 Mbps transfer speeds and can be used to communicate with the human machine interface (HMD, supervisory Control and Data Acquisition (SCADA) and other controllers over information instructions within the same Ethernet. The USB port is USB2.0 that supports 12 Mbps communication speed.
The 1756-L84E has a built-in user memory of up to 20MB. Extended non-volatile memory can be installed using the 2GB Secure digital (SD) card 1784-SD2. This controller does not require a battery to hold the contents of volatile memory, as it comes with a modern energy storage solution that eliminates the need to use a battery, making the controller user – and environment-friendly.
The 1756-L84E ControLogix 5580 controller from Allen-Bradley is a high-performance controller with up to 128,000 /0 to enhance machine automation and improve performance. It is equipped with 20MB of user program storage memory and allows for expansion and long-term program storage via an optional pre-loaded 2 GB secure digital card (1784-SD2). A multi-energy module is embedded in the controller, requiring no additional batteries, and the entire controller consumes 5 mA backplane current at 1.2V DC and 1.2 chamber amps of backplane current at 5.1V DC. The 1756-L84E has an operating heat dissipation of 21.2 BTU/hr and provides 50V isolation between the USB port and backplane, from the main grid port to the board, and from the USB port to the main grid port, with basic insulation tested at 1000V AC for 1 minute.
Troubleshooting ① Identify the breakpoint and repair it; ② Check the polarity of the winding; Determine whether the end of the winding is correct; ③ Tighten the loose wiring screws, use a multimeter to determine whether the joints are false, and repair them; ④ load reduction or detect and eliminate mechanical faults, ⑤ check whether the specified face connection is also misconnected to Y; Whether the voltage drop is too large because the power wire is too thin, to be corrected, ⑥ reassembly to make it flexible; Replace qualified grease; ⑦ Repair bearings.

1756-L84E