变频器6RA7095-4LV62-0

现代的PLC拥有大量的软件资源，如FX2N系列PLC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，可以把这些资源利用起来，用于故障检测。

　　（1）**时检测机械设备在各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PLC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。例如设某执行机构（如电动机）在正常情况下运行50s后，它驱动的部件使限位开关动作，发出动作结束信号。若该执行机构的动作时间**过60s（即对应定时器的设定时间），PLC还没有接收到动作结束信号，定时器延时接通的常开触点发出故障信号，该信号停止正常的循环程序，启动报警和故障显示程序，使操作人员和维修人员能迅速判别故障的种类，及时采取排除故障的措施。

6RA7018-6DS22-0 
6RA7025-6DS22-0 
6RA7028-6DS22-0 
6RA7031-6DS22-0 
6RA7075-6DS22-0 
6RA7078-6DS22-0 
6RA7081-6DS22-0 
6RA7085-6DS22-0 
6RA7087-6DS22-0 
6RA7091-6DS22-0 
6RA7093-4DS22-0 
6RA7095-4DS22-0 
6RA7013-6DV62-0 
6RA7018-6DV62-0 
6RA7025-6DV62-0 
6RA7028-6DV62-0 
6RA7031-6DV62-0 
6RA7075-6DV62-0 
6RA7078-6DV62-0 
6RA7081-6DV62-0
6RA7085-6DV62-0 
6RA7087-6DV62-0 
6RA7091-6DV62-0 
6RA7093-4DV62-0 
6RA7095-4DV62-0 
6RA7025-6GS22-0 
6RA7031-6GS22-0 
6RA7075-6GS22-0 
6RA7081-6GS22-0 
6RA7085-6GS22-0 
6RA7087-6GS22-0 
6RA7090-6GS22-0 
6RA7093-4GS22-0 
6RA7095-4GS22-0 
6RA7025-6GV62-0 
6RA7031-6GV62-0 
6RA7075-6GV62-0 
6RA7081-6GV62-0 
6RA7085-6GV62-0 
6RA7087-6GV62-0 
6RA7090-6GV62-0 
6RA7093-4GV62-0 
6RA7095-4GV62-0 
6RA7086-6KS22-0 
6RA7088-6KS22-0 
6RA7093-4KS22-0 
6RA7095-4KS22-0 
6RA7086-6KV62-0 
6RA7090-6KV62-0 
6RA7093-4KV62-0 
6RA7095-4KV62-0 
6RA7088-6LS22-0 
6RA7093-4LS22-0 
6RA7095-4LS22-0
6RA7088-6LV62-0 
6RA7093-4LV62-0 
6RA7095-4LV62-0-
6RA7018-6FS22-0 
6RA7025-6FS22-0 
6RA7028-6FS22-0 -
6RA7031-6FS22-0 
6RA7075-6FS22-0 
6RA7078-6FS22-0 
6RA7082-6FS22-0 
6RA7085-6FS22-0 
6RA7087-6FS22-0 
6RA7091-6FS22-0 
6RA7018-6FV62-0 
6RA7025-6FV62-0 
6RA7028-6FV62-0 
6RA7031-6FV62-0 
6RA7075-6FV62-0 
6RA7078-6FV62-0 
6RA7082-6FV62-0 
6RA7085-6FV62-0 
6RA7087-6FV62-0 
6RA7091-6FV62-0