电流监控器Currrent Monitor
现在有一只西门子的电流监控器Currrent Monitor 坏了，想在224XP里用软件来实现该电流监控器Currrent Monitor 的功能，该电流监控器Currrent Monitor 功能描述如下，用软件在224XP里该如何实现该功能呢？
SIEMENS 3UG3522-1AL20
8A/250V 50/60Hz 1/3HP 1-Phase Monitoring Relay - Due to the ON-delay T2, current peaks (OVER function) or current drops (UNDER function), which may occur during closing, do not result in a change to the relay state, for example suppression of the starting current during motor acceleration. The delay time T1 prevents the relay from picking up and releasing - A green LED signalizes the applied supply voltage. A yellow LED indicates the relay status. Current monitoring without memory (NO MEMORY) (Fig. IIIa) When the value of the monitored alternating or direct current has reached the threshold set at the front panel, and the set delay time T1 has elapsed, the output relay releases. As soon as the current reaches the hysteresis value, the relay picks up again. Current monitoring with memory: (Fig. IIIb) When the set threshold value has been reached and the set delay time T1 has elapsed, the output relay releases and remains in this state, even when the measured current reaches the set hysteresis value again. A reset is performed by switching the supply voltage off and on. 23mm wide 78mm tall 104mm OAD - 4 controls on front panel, tiny little überwachungsrelais
最佳答案
1、电流监控器Currrent Monitor主要特性：
响应时间 / 最大的： 450 ms。
可调节的动作延迟时间。
可调节动作值 电流。
相对的测量精确度 5%.
详见：
https://support.automation.siemens.com/WW/llisapi.dll?func=ll&objId=22935078&nodeid0=20355839&idx0=W&nav0=tree&prodLstObjId=22935078&lang=de&siteid=cseus&aktprim=0&objaction=csviewtd&extranet=standard&viewreg=WW&selectedLang;22935078=1&switchLang;22935078;6.x=1&langex=zh
2、电流监控器Currrent Monitor是一个独立智能型仪表，其特点是精度高、相应快，并且参数可设定。
3、如果对精度高、相应快不要求，可以应用S7-200来实现。如果实现参数可设定，则需配置HMI（触摸屏或上位机）。应用S7-200来实现主要是应用模拟量输入板块来采集电流，根据当前电流值进行相应的动作。
4、有关模拟量的编程：
见《 模拟量输入模块EM231的使用举例》下载：
http://www.ymmfa.com/read-gktid-50415-uid-13129.html
请见《S7-200模拟量输入模块EM231的应用》连接：
http://doc.plcjs.com/doc_jq/SiemensSkill/2008-11/7/0811722230143887.htm
5、建议：还是购置一个新的电流监控器Currrent Monitor吧，这样才能满足当时的设计要求。这种产品上网搜，有的卖。
提问者对于答案的评价：
谢谢
专家置评
已阅，最佳答案正确。
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