
AB1771-QB厂家直销
AB1771-QB厂家直销
AB1771-QB厂家直销
联系人:王工
咨询电话:15506917382
座机:0591-62182535
联系QQ:583745937
0591-62032566
主营:世界知名品牌的PLC 、DCS 系统备件 模块
由于采用了上述有效措施,保证了PLC的高可靠性,从而使PLC的平均无故障时间已经能高达几十万小时。
2、应用灵活、使用方便
模块化的PLC设计,使用户能根据自己控制系统的大小、工艺流程和控制要求等来选择自己所需要的PLC的模块并进行资源配置和PLC编程。这样,控制系统就不再需要大量硬件装置,用户只需根据控制需要设计PLC的硬件配置和I/O的外部接线即可。而在PLC控制系统中,当控制要求改变时,不改动PLC外部接线,只需修改程序即可。
3、面向控制过程的编程语言,容易掌握
PLC的编程语言采用继电器控制电路的梯形图语言,清晰直观。虽然PLC是以微处理器为核心的控制装置,但是它不需要用户具有很强的程序设计能力,只要用户具备一定的计算机软、硬件知识和电器控制方面的知识即可[7]。
4、易于安装、调试、维修
在安装时,由于PLC的输入/输出接口已经做好,因此可以直接和外部设备相连,而不再需要专用的接口电路。而且PLC的软件功能取代了原来的继电器控制中间继电器、计时器、计数器等一些器件,所以硬件安装上的工作量相应减少[8]。
PLC的调试可先在实验室模拟完成,模拟调试完成后再现场安装、调试。这样就可以避免可能在现场会出现的一些问题,从而缩短调试周期。
在维修方面,PLC完善的诊断和显示功能,可以通过模块上的显示或编程器等很容易地找出故障的模块,而且由于模块化设计,因此只需要对错误的模块进行更换即可。
5、功能完善、模块功能和网络功能强大
现在PLC不仅具有逻辑运算、定时、计数、顺序控制等功能,而且还具有A/D、D/A转换、数值运算和数据处理等功能。因此,它既可以对开关量进行控制,又可以对模拟量进行控制。由于PLC产品的系列化和模块化,PLC配备有品种齐全的多种硬件装置供用户选用,可以组成能满足各种控制要求的控制系统。就目前为止,有两个主要的分流方向,第一个是向农业照明领域突破,第二个就是向光通讯领域发展。
Siemens 6ES7340-1AH02-0AE0 6ES7 340-1AH02-0AE0 S7-300 CP 340 Comm Processor READ
〖⒈〗Allen-Bradley(美国AB)系列产品》
〖⒉〗Schneider(施耐德电气)系列产品》
〖⒊〗General electric(通用电气)系列产品》
〖⒋〗Westinghouse(美国西屋)系列产品》
〖⒌〗SIEMENS(西门子系列产品)》
〖⒍〗销售ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic Robots、MOTOMAN Robots。
〖⒎〗estinghouse(西屋): OVATION系统、WDPF系统、MAX1000系统备件。
〖⒏〗Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数据通信及处理等。Invensys Triconex: 冗余容错控制系统、基于三重模件冗余(TMR)结构的最现代化的容错控制器。

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AB1771-QB厂家直销
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AB1771-QB厂家直销
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AB1771-QB厂家直销
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