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有哪些原因可以引起中控卡件压力信号异常?

2021-12-04 13:25:23 来源:http://www.promaidmusic.com/ 53

A:压力信号出现满量程情况,与实际不符。断开卡件后面的信号线正,信号由满量程变仍有8公斤左右压力信号(量程为0-13公斤)。经现场观察,该测点经过全。将信号线短路,不过安栅后,信号显示正常。
A: The pressure signal is in full scale, which is inconsistent with the actual situation. Disconnect the positive signal line behind the card, the signal changes from full scale to about 8kg pressure signal (the range is 0-13kg). According to field observation, the measuring point has passed through the whole process. Short circuit the signal line, but the signal display is normal after the safety barrier.
初步判断是安栅出现问题。原因可能是同一组的信号,安栅是共地的。当安栅故障后,另一毫安信号耦合到该信号上来,造成信号的干扰。
It is preliminarily judged that there is a problem with the safety barrier. The reason may be that the signals of the same group are grounded. When the barrier fails, another Ma signal is coupled to the signal, causing signal interference.
热电阻信号不准如何排查?
How to check the inaccurate thermal resistance signal?
A:首先,检查热电阻的组态,确认了组态中的热电阻型号和实际的型号保持一致;其次,确保上下位机组态一致。然后,如果还是怀疑测温有问题的话,可以测量现场热电阻A和B之间的阻值为R1;B和C之间的阻值为R2。
A: Firstly, check the configuration of thermal resistance and confirm that the thermal resistance model in the configuration is consistent with the actual model; Secondly, ensure that the upper and lower computer configurations are consistent. Then, if it is still suspected that there is a problem with temperature measurement, the resistance between on-site thermal resistance a and B can be measured as R1; The resistance between B and C is R2.
根据3线制热电阻的测温原理,可以得到热电阻的实际电阻值为R1-2R2。然后查表找出对应的温度。然后用这个温度和监控上的温度再进行比较。如果出入较大,请更换卡件后再次尝试。
According to the temperature measurement principle of 3-wire thermal resistance, the actual resistance value of thermal resistance can be obtained as r1-2r2. Then check the table to find out the corresponding temperature. Then compare this temperature with the temperature on the monitor. If the access is large, please replace the card and try again.
以上就是浙大中控DCS卡件http://www.promaidmusic.com为大家介绍的中控卡件压力信号异常原因的分析排查内容,感谢您在百忙之中查看我公司的信息内容,如果您想要了解的更多,欢迎您来电进行咨询!
The above is the central control DCS card of Zhejiang University http://www.promaidmusic.com I'd like to introduce the analysis and troubleshooting of the causes of abnormal pressure signal of central control card. Thank you for checking the information of our company in your busy schedule. If you want to know more, you are welcome to call for consultation!
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