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叙述使用６ＳＲＡ２４型全数字直流调速控制装置和ＪＨ．Ｓ系列可编程控制器（ＰＬＣ）对ＳＣＲ控制系统进行技术改造，使其在技术性能和可靠性等方面均达到国外成套产品水平。实际应用中取得良好的经济效益和社会效益。
Describe the use of 6SRA24 all-digital DC speed control device and JH. S series programmable logic controller (PLC) to SCR control system for technological transformation, to its technical performance and reliability have reached the level of complete sets of products abroad. Practical applications made good economic and social benefits.