KUBOTAKF-C1000 保一年 售后无忧

1757-SRM
VE4070
2711P-T7C4D8
SGMG-18B2ABC
YT204-001AF
3ASD-489301A410YPK107A
DS200SLCCG3A
6SE7035-1EJ84-1JC2
WD5-008.051.00
BM4423-ST0-01200-03
3HAC035301-001
3HAC039603-001
3HAC039603-002
2711E-T14C6E

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描述

一般来说,PLC是极其可靠的设备,出故障率很低。PLC的CPU等硬件损坏或软件运行出错的概率几乎为零;PLC输入点如不是强电入侵所致,几乎也不会损坏;PLC输出继电器的常开点,若不是外围负载短路或设计不合理,负载电流超出额定范围,触点的寿命也很长。因此,我们查找电气故障点,重点要放在PLC的外围电气元件上,不要总是怀疑PLC硬件或程序有问题,这对快速维修好故障设备、快速恢复生产是十分重要的,因此笔者所谈的PLC控制回路的电气故障检修,重点不在PLC本身,而是PLC所控制回路中的外围电气元件。

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