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Eurotherm H2R40E5模拟量控制器

本章提供了查找和修复渠道的推荐方法/磁场故障。必须结合本地操作和系统的维护手册或等效文档。

了解国家变量（<variablename>.STA）状态变量（<variablename>.STA）是完整结构的一个属性用于输入和输出通道。变量报告的数值反映通道的当前状态。

状态变量从1到7有七个可能的值（状态）。状态2和4显示数字输入和输出的正常操作；状态3表示模拟输入的正常操作。其他州显示过错状态变量实时更新。现场故障诊断程序故障使用状态变量的值。

状态指示器与数字输入状态变量的相关性无线路监控的数字输入通道可以查找和报告状态2、3、4、6和7，但未发现开路或短路。监控的线路输入可以发现并报告每个状态，包括断路或短路。如果连接或断开接线、模块或通信电缆在通电时，电弧会发生这可能导致危险位置装置发生爆炸。

做电路时，不要拆除接线、保险丝、模块或通信电缆通电，除非该位置已知无害。未能遵循这些说明可能会导致受伤。

更换通道保险丝为I/O模块使用以下保险丝：

•数字/模拟输入保险丝T9901：无396/TE5 50 mA延时保险丝；UL 248-14，125 V，无铅；由Littelfuse制造。

•数字输出保险丝T9902：SMF Omni Block，表面安装保险丝盒154 010，10 a，125 V快速熔断器，Littelfuse。在危险位置，在拆卸或更换保险丝之前，确保电路断电。

如果电路通电可能会产生电弧并引起爆炸。未能遵循这些说明可能会导致人员受伤。

检查AADvance Workbench软件2.x版中的状态变量或AADvance Trusted SIS Workstation软件：1.从设备视图中，展开模块，然后双击要检查的通道。

2.从“设备”属性页中，确定“状态”变量。

•输入模块：%IBnnn.0.n

•输出模块：%QBnnn.0.n

3.连接到控制器以实时查看更新。有关信息，请参阅产品的联机帮助或用户手册。

状态变量的值实时更新，以反映这个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

型号：H2R40E5

产地：美国

质保：365天

成色：全新/二手

发货方式：快递发货