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PS3-AC-EE

PS3-AC-EE

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电话: 微信同号 联系人:吴工PLC控制系统的一般结构和故障类型PLC控制系统主要由输入部分、CPU、采样部分、输出控制和通讯部分组成,如图1所示。输入部分包括控制面板和输入模板;采样部分包括采样控制模板、AD转换模板和传感器;CPU作为系统的核心,完成接收数据,处理数据,输出控制信号;输出部分有的系统用到DA模板,将输出信号转换为模拟量信号,经过功放驱...

  • 型号:PS3-AC-EE
  • 供货量:1件
  • 品牌:PS3-AC-EE
  • 发货地:福建厦门
  • 发货期:1天内
  • 价格:¥468元/件

详细内容

电话: 微信同号 联系人:吴工

PLC控制系统的一般结构和故障类型

PLC控制系统主要由输入部分、CPU、采样部分、输出控制和通讯部分组成,如图1所示。输入部分包括控制面板和输入模板;采样部分包括采样控制模板、AD转换模板和传感器;CPU作为系统的核心,完成接收数据,处理数据,输出控制信号;输出部分有的系统用到DA模板,将输出信号转换为模拟量信号,经过功放驱动执行器;大多数系统直接将输出信号给输出模板,由输出模板驱动执行器工作;通讯部分由通讯模板和上位机组成。

因为PLC本身的故障可能性极小,系统的故障主要来自外围的元部件,所以它的故障可分为如下几种:

(1)输入故障,即操作人员的操作失误;

■传感器故障;

■执行器故障;

■PLC软件故障

这些故障,都可以用合适的故障诊断方法进行分析和用软件进行实时监测,对故障进行预报和处理。

PLC控制系统的故障诊断方法

PLC控制系统故障的宏观诊断

故障的宏观诊断就是根据经验,参照发生故障的环境和现象来确定故障的部位和原因。PLC控制系统的故障宏观诊断方法如下:

■是否为使用不当引起的故障,如属于这类故障,则根据使用情况可初步判断出故障类型、发生部位。常见的使用不当包括供电电源故障、端子接线故障、模板安装故障、现场操作故障等。

■如果不是使用故障,则可能是偶然性故障或系统运行时间较长所引发的故障。对于这类故障可按PLC的故障分布,依次检查、判断故障。首先检查与实际过程相连的传感器、检测开关、执行机构和负载是否有故障:然后检查PLC的I/O模板是否有故障:后检查PLC的CPU是否有故障。

■在检查PLC本身故障时,可参考PLC的CPU模板和电源模板上的指示灯。

■采取上述步骤还检查不出故障部位和原因,则可能是系统设计错误,此时要重新检查系统设计,包括硬件设计和软件设计。

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FANUC CABLE A660-4003-T513

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GE FANUC A16B-2200-029/0?6C

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GE FANUC IC200MDL640H

FANUC SERVO MOTOR A06B-0524-B251

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GE FANUC IC600BF923K

GE FANUC IC600CB536L

GE FANUC IC3600LTGA1A

GE FANUC IC3600LLDB1A

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GE FANUC IC660TBD025C WITH IC660EBD025F

GE FANUC IC660EBD024V 32PT

GE FANUC IC600BF940L

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FANUC A16B-1212-0930/?06B

FANUC A86L-0001-0172/?HT2

FANUC A80L-0026-0033

FANUC 44A728128-G01

GE FANUC IC697MEM733B

GE FANUC IC600CB525P

GE FANUC IC3600LLXA1A

FANUC A16B-3200-0070/?03A

FANUC A16B-3200-0070/?02A

GE FANUC 531X170TBSADG1

GE FANUC IC200ALG326B

FANUC A02B-0120-C111

GE FANUC IC693MDL734D

GE FANUC IC697MDL651

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FANUC A16B-2203-0340/?02A

GE FANUC IC697MDL340F

GE FANUC IC697MDL340E

FANUC IC693ALG390F

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FANUC A02B-2902-0490/?04B

FANUC PC BOARD A20B-2900-0811/?02A

FANUC OPERATOR INTERFACE BOARD A16B-2200-0660/?05

GE FANUC IC697MDL240B

FANUC A16B-2200-0210/?04A

GE FANUC IC660ED101B

GE FANUC IC697MDL250

GE FANUC ELECTRICAL MODULE IC660EBD100A

FANUC A290-7903-Z011

FANUC A660-8010-T421

FANUC A16B-1500-0010/?03B

FANUC A06B-0113-B175

FANUC A16B-1212-0871/?06A

FANUC A06B-0642-B005

FANUC A06B-0163-B175

GE FANUC IC600YB944A I/O

GE FANUC IC660CBB903K I/O

FANUC A97L-021B-0224

GE FANUC IC3600LFAA1A

FANUC A06B-6047-H041

GE FANUC 0207A250

GE FANUC IC600BF948L

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