GE    5KH39QNA002BX GE    5KH39QNA002BX
　　系统的设计、安装、调试工作量少
　　PLC用软件功能取代了继电器控制系统中大量的中间继电器、时间继电器、计数器等器件，使控制柜的设计、安装、接线工作量大大减少。
　　PLC的梯形图程序可以用顺序控制设计法来设计。这种编程方法很有规律，很容易掌握。对于复杂的控制系统，如果掌握了正确的设计方法，设计梯形图的时间比设计继电器系统电路图的时间要少得多。
　　可以在实验室模拟调试PLC的用户程序，输入信号用小开关来模拟，可通过PLC发光二极管观察输出信号的状态。完成了系统的安装和接线后，在现场的统调过程中发现的问题一般通过修改程序就可以解决，系统的调试时间比继电器系统少得多。
　　维修工作量小，维修方便
　　PLC的故障率很低，且有完善的自诊断和显示功能。PLC或外部的输入装置和执行机构发生故障时，可以根据PLC上的发光二极管或编程器提供的信息方便地查明故障的原因，用更换模块的方法可以迅速地排除故障。
　　体积小，能耗低
　　对于复杂的控制系统，使用PLC后，可以减少大量的中间继电器和时间继电器，小型PIC的体积仅相当于几个继电器的大小，因此可将开关柜的体积缩小到原来的l/2~1/10。
　　PLC控制系统的配线比继电器控制系统的少得多，故可以省下大量的配线和附件，减少很多安装接线工时，加上开关柜体积的缩小，可以节省大量的费用。


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Why are the prices of many of my company's products more competitive?
(1) Source procurement to reduce the price difference in intermediate links
(2) The channel is stable and the supply of goods is more secure

Delivery time
(1) Stock products in stock, after signing the contract and payment, the delivery can be arranged on the same day
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