PR6423/010-010
¥1.00
9268/200-000
¥1.00
EPRO MMS6350
¥1.00
PR6423/010-000
¥1.00
PR6423/015-000
¥1.00
RSM010
¥1.00
西门子 RMS-TSIG-TZ-C
随着我国经济的不断发展，社会高度信息化，新的高科技技术不断应用到各个方面中，使得智能化已成为一种发展的必然趋势。智能化也往往是从设备自动化系统开始。本文主要根据个人工作经验就一台水冷螺杆机组来阐述PLC控制设计与智能化中央空调系统的关系。
中央空调冷冻系统的控制有3种控制方式：早期的继电器控制系统、直接数字式控制器DDC以及PLC（可编程序控制器）控制系统。继电器控制系统由于故障***，系统复杂，功耗高等明显的缺点已逐渐被人们所淘汰，直接数字式控制器DDC虽然在智能化方面有了很大的发展。但由于DDC其本身的抗干扰能力问题和分级分步式结构的局限性而限制了其应用范围。相反，PLC控制系统以其运行可靠、使用与维护均很方便，抗干扰能力强，适合新型高速网络结构这些***的优点使其逐步得到广泛的应用。
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