工业折叠门中的快速卷帘门、高速门、快速堆积门等可编程序控制器的可靠性很高,本身有完善的自诊断功能,可编程序控制器如出现故障,借助自诊断程序可以方便的找到故障的部位与部件,更换后就可以恢复工业折叠门的正常工作.
Industrial folding door fast shutter door, high-speed door, reliability of PLC door piled high, itself has a self diagnostic function perfect, programmable controller such as faults, with self diagnostic program can easily find the parts and components of normal fault, the replacement can be resumed after the industrial folding the door.
大量的工程实践表明,工业折叠门
可编程序控制器外部的输入、输出元件,如限位开关、电磁阀、接触器等的故障率远远高于可编程序控制器本身的故障率,而这些元件出现故障后,可编程序控制器一般不能觉察出来,不会自动停机,可能使故障扩大,直至强电保护装置动作后停机,有时甚至会造成设备和人身事故.停机后,查找故障也要花费很多时间.为了及时发现故障,在没有酿成事故之前使可编程序控制器自动停机和报警,也为了方便查找故障,提高维修效率,可以使用梯形图程序实现故障的自诊断和自处理.现代的可编程序控制器拥有大量的软件资源,如FX2N系列可编程序控制器有几千点辅助继电器、几百点定时器和计数器,有相当大的裕量.可以这些资源利用起来,用于故障检测.
Indicates that a large number of engineering practice, the input, output element industry folding door programmable controller external fault, such as limit switches, solenoid valve, contactor, far higher than the rate of the programmable program controller itself fault rate, and these elements after the failure, a programmable controller cannot in general sense, does not automatically shut down, may make the breakdown from expanding, until the voltage protection device after shutdown, and sometimes even cause personal and equipment accident. After the shutdown, fault finding also want to spend a lot of time. In order to find fault in time, without causing the accident that the programmable controller automatic shutdown and alarm, also in order to facilitate the search failure, improve the repair efficiency, you can use the trapezoidal chart procedure realization of fault self diagnosis and self treatment. Modern programmable controller has a lot of software resources, such as the FX2N series programmable controller, hundreds of thousands of auxiliary relay point of the timer and counter, margin considerably. Can use these resources, used for fault detection.
1、超时检测 工业折叠门机械设备在各自工步的动作所需的时间一般是不变的,即使变化也不会太大,因此可以以这些时间为参考,在可编程序控制器发出输出信号,相应的外部执行机构开始动作时启动一个定时器定时,定时器的设定值比正常情况下该动作的持续时间长20%左右.
1, timeout detection required action industrial folding door mechanical equipment on each step of time is generally the same, even if will not change too much, so can the time for reference, in the programmable controller sends the output signal, the corresponding external actuator start action starts a timer, timer setting about the action duration than normally 20%.
系统正常运行时,可编程序控制器的输入、输出信号和内部的信号(如辅助继电器的状态)相互之间存在着确定的关系,如出现异常的逻辑信号,则说明出现了故障.因此,可以编制一些常见故障的异常逻辑关系,一旦异常逻辑关系为ON状态,就应该按故障处理.
2, the logical error detection in the normal operation of industrial folding door system, input, output signal and the internal signal of PLC (such as auxiliary relay state) a definite relationship between some, such as the emergence of logic signal is abnormal, the malfunction. Therefore, logic can also be compiled some of the most common abnormality the fault, once the abnormal logic to the ON state, should according to the fault treatment.