四插槽和雙四插槽背板對于創(chuàng)建小型分布式控制系統(tǒng)非常有用。四插槽背板的另一個應用是利用兩個實時自動化控制器(RTAC)模塊實現(xiàn)冗余控制系統(tǒng)。原有的十插槽背板適用于輸入和輸出更集中的大型控制應用。AxionRTAC模塊和SEL-3530 RTAC現(xiàn)在都支持IEC 61850 GOOSE，可接收120條和發(fā)送48條消息，在集成各種智能電子設備(IED)方面具有更大的靈活性。SEL繼續(xù)為Axion開發(fā)新功能。今年晚些時候將發(fā)布各種輸入/輸出(I/O)模塊，包括直流模擬輸入、交流計量、快速高電流數字輸出和直流模擬輸出模塊，以擴展Axion的監(jiān)控和控制能力。SEL還將增加協(xié)議選擇的靈活性，支持RTAC產品線中的IEC61850彩信和IEC 60870-5.

Four slot and dual four slot backplanes are very useful for creating small distributed control systems. Another application of the four slot backplane is to implement redundant control systems using two real-time automation controller (RTAC) modules. The original ten slot backplane is suitable for large-scale control applications with more centralized input and output. Both AxionRTAC module and SEL-3530 RTAC now support IEC 61850 GOOSE, which can receive up to 120 messages and send 48 messages, providing greater flexibility in integrating various intelligent electronic devices (IEDs). SEL continues to develop new features for Axion. Later this year, various input/output (I/O) modules will be released, including DC analog input, AC metering, fast high current digital output, and DC analog output modules, to expand Axion's monitoring and control capabilities. SEL will also increase the flexibility of protocol selection, supporting IEC61850 MMS and IEC 60870-5 in the RTAC product line