產品內容介紹

Eurotherm H2R40E5模擬量控制器

本章提供了查找和修復渠道的推薦方法/磁場故障。必須結合本地操作和系統的維護手冊或等效文檔。

了解國家變量（<variablename>.STA）狀態變量（<variablename>.STA）是完整結構的一個屬性用于輸入和輸出通道。變量報告的數值反映通道的當前狀態。

狀態變量從1到7有七個可能的值（狀態）。狀態2和4顯示數字輸入和輸出的正常操作；狀態3表示模擬輸入的正常操作。其他州顯示過錯狀態變量實時更新?，F場故障診斷程序故障使用狀態變量的值。

狀態指示器與數字輸入狀態變量的相關性無線路監控的數字輸入通道可以查找和報告狀態2、3、4、6和7，但未發現開路或短路。監控的線路輸入可以發現并報告每個狀態，包括斷路或短路。如果連接或斷開接線、模塊或通信電纜在通電時，電弧會發生這可能導致危險位置裝置發生爆炸。

做電路時，不要拆除接線、保險絲、模塊或通信電纜通電，除非該位置已知無害。未能遵循這些說明可能會導致受傷。

更換通道保險絲為I/O模塊使用以下保險絲：

?數字/模擬輸入保險絲T9901：無396/TE5 50 mA延時保險絲；UL 248-14，125 V，無鉛；由Littelfuse制造。

?數字輸出保險絲T9902：SMF Omni Block，表面安裝保險絲盒154 010，10 a，125 V快速熔斷器，Littelfuse。在危險位置，在拆卸或更換保險絲之前，確保電路斷電。

如果電路通電可能會產生電弧并引起爆炸。未能遵循這些說明可能會導致人員受傷。

檢查AADvance Workbench軟件2.x版中的狀態變量或AADvance Trusted SIS Workstation軟件：1.從設備視圖中，展開模塊，然后雙擊要檢查的通道。

2.從“設備”屬性頁中，確定“狀態”變量。

?輸入模塊：%IBnnn.0.n

?輸出模塊：%QBnnn.0.n

3.連接到控制器以實時查看更新。有關信息，請參閱產品的聯機幫助或用戶手冊。

狀態變量的值實時更新，以反映這個I/O通道。

Troubleshooting and Rectifying Channel/Field Faults

This chapter provides recommended approaches to find and repair channel/ field faults. It must be read in conjunction with the local operation and maintenance manual or equivalent documentation for your system. Understanding the State Variable (.STA) The state variable (.STA) is one attribute of the full structure for input and output channels. The variable reports a numeric value which reflects the current state of the channel. There are seven possible values (states) for the state variable from 1 to 7. States 2 and 4 show normal operation for digital inputs and outputs; state 3 represents normal operation for an analogue input. The other states show a fault. The state variable updates in real time. The fault diagnosis procedures for field faults use the value of the state variable. Correlation of Status Indicators with State Variable for a Digital Input A digital input channel without line monitoring can find and report states 2, 3, 4, 6 and 7, but cannot find an open circuit or short circuit. A line monitored input can find and report every state, including an open circuit or short circuit.

If you connect or disconnect wiring, modules, or communications cabling while power is applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Do not remove wiring, fuses, modules, or communications cabling while circuit is energized unless the location is known to be non-hazardous. Failure to follow these instructions can cause injury.

Replacing Channel Fuses

 Use the following fuses for the I/O modules: ? Digital/ Analogue Input Fuses T9901: No 396/TE5 50 mA time lag fuse; UL 248-14, 125 V, Leadfree; manufactured by Littelfuse. ? Digital Output Fuses T9902: SMF Omni-Block, Surface Mount Fuse Block 154 010, with a 10 A, 125 V Fast Acting Fuse, Littelfuse.: In a hazardous location, make sure a circuit is deenergized before you remove or replace a fuse. If the circuit is energized it is possible to make an electrical arc and cause an explosion. Failure to follow these instructions can cause injury to persons.To examine the State variable in AADvance Workbench software version 2.x or AADvance-Trusted SIS Workstation software: 1. From the Equipment View, expand the module, and then double-click the channel to examine. 2. From the Equipment property page, identify the State variable. ? Input modules: %IBnnn.0.n ? Output modules: %QBnnn.0.n 3. Connect to the controller to see updates in real time. For information, refer to the online help or user manual for the product. The value of the State variable updates in real time to reflect the state of the I/O channel.

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品牌：Eurotherm

型號：H2R40E5

產地：美國

質保：365天

成色：全新/二手

發貨方式：快遞發貨