HIEE300888R0001 UAC389AE01 ABB

Description

无底板，靠模块间接口直接相联，然后再固定到相应导轨上。OMRON公司的CQM1、CJ1机就是这种结构，比较紧凑。西门子的S7_300也如此，只是它还要接线插头，如要单独固定时，还得另定购固定支架。

有底板，所有模块都固定在底板上。比较牢固，但底板的槽数是固定的，如3、5、8、10槽等等。槽数与实际的模块数不一定相等，配置时难免有空槽。这既浪费，又多占空间，以至于有时还得用占空单元，把多余的槽覆盖好。

用机架代替底板，所有模块都固定在机架上。这种结构比底板式的复杂，但更牢靠。用这种组合时，它的模块不用外壳，但有小面板，用组合后密封与信号显示。

内插板式:为了适应机电一体化的要求，有的PLC制造成内插板式的，可嵌入到有关装置中。如有的数控系统，其逻辑量控制用的内置PLC，就可用这个内插板式的PLC代替。它有输入点、输出点，还有通讯口、扩展口及编程器口。PLC有的功能，它也都有。但它只是一个控制板，可很方便地镶嵌到有关装置中。

4．按其它特点分：

Allen-Bradley GuardMaster 440R-B23020 SAFETY RELAY NNB

Allen-Bradley Guardmaster MSR Dual Channel Safety Relay

Allen Bradley Safety Relay Guardmaster 440R-ZBE820AZ1

ALLEN BRADLEY 440R-N23132 GUARDMASTER SAFETY RELAY NEW

AB 440R-D23022 SER A SAFETY RELAY GUARDMASTER MINOTAUR

AB 440R-D23171 SAFETY RELAY GUARDMASTER MSR125HP NIB

Allen Bradley MSR138DP Guardmaster Safety Relay Used

ALLEN BRADLEY GUARDMASTER MSR138DP SAFETY RELAY

Allen Bradley MSR131RTP Guardmaster Safety Relay Used

Allen Bradley Guardmaster Safety Relay 440R-C23018

Allen Bradley Guardmaster Safety Relay 440N-S32013

AB 440R-E23030 SER A SAFETY RELAY GUARDMASTER MINOTAUR

Guardmaster MSR6R/T Universal Safety Relay 440R-C23018

Allen-Bradley Guardmaster Safety Relay MSR142RTP

Allen Bradley / Guardmaster Safety Relay, #440R-E23030

AB 440R-E23031 SER A SAFETY RELAY GUARDMASTER MINOTAUR

USED Allen Bradley MSR122E Guardmaster Safety Relay

Allen Bradley Guardmaster Safety Relay 440R-ZBR520AZ1

Allen Bradley Safety Relay Guardmaster 440R-ZBR520AZ1

Relay Safety Guardmaster AB catalog# 440R C23017 ser A

AB Guardmaster Safety Relay 440R-ZBR520AZ1 440RZBR520AZ

Allen Bradley Guardmaster Safety Relay 440R-ZBR520AZ1

USED Allen Bradley 440R-N23132 Guardmaster Safety Relay

Allen Bradley MSR122E Guardmaster Safety Relay Ref LNC

USED Allen Bradley MSR131RTP Guardmaster Safety Relay

Allen Bradley Guardmaster MSR6R/T Safety Relay Unit

Allen Bradley GuardMaster 440R-ZBR520AZ1 Safety Relay

Allen Bradley Guardmaster Safety Relay MSR138DP