【功能描述】
IS220PDOAH1A是一个离散输出包,是GE Speedtronic Mark VIe燃气轮机控制系统的一部分。它通过电气接口将一个或两个I/O以太网网络连接到离散输出端子板。该套件包括一块由所有Mark VIe分布式I/O套件共享的处理器板,以及一块专用于离散输出功能的采集板。①⑤③⑤⑨0②①00②
该电池组最多可控制12个继电器并接受来自接线板的反馈。有磁继电器(TRLYH1B、C、D和F端子板)和固态继电器(TRLYH1E板)可供选择。该电池组由三针电源输入和两个RJ45以太网连接器供电。输出通过直接连接到相关端子板连接器的DC-37针连接器进行。LED指示灯提供视觉诊断,红外端口允许本地诊断串行通信。
它适用于六种不同类型的离散(继电器)输出端子板,包括TRLY和SRLY板,但不包括DIN导轨安装的DRLY板。信号路径中使用的I/O包的数量称为控制模式:
Simplex使用单个I/O包和一个或两个网络连接。
Dual使用两个I/O包和一个或两个网络接口。
TMR使用三个I/O包,每个包有一个网络连接。
处理器板链接到专用于I/O包功能的采集板。施加输入电源时,软启动电路会增加处理器板上的可用电压。本地电源按顺序打开,处理器复位被禁用。完成自检例程后,处理器从闪存中加载特定于I/O包类型的应用程序代码。
应用代码读取板卡ID信息,确保应用代码、采集板、端子板都正确匹配。如果匹配良好,处理器会尝试建立以太网通信,从网络地址请求开始。
地址请求采用行业标准的动态主机配置协议(DHCP)和终端板的唯一标识。在以太网初始化之后,处理器对板载逻辑进行编程以执行应用程序,并允许采集板启动。
IS220PDOAH1A特点
单个PDOA包中的继电器通道数为12个继电器(不同类型取决于端子板)
15组输入由继电器和线圈监控。所使用的端子板类型(由ID芯片决定)会影响监视器反馈的选择。
从以太网命令到输出,I/O包响应时间约为6毫秒。
The IS220PAOCH1A is an analog I/O Pack developed under the GE Mark VI series. Simplex and Triple Module Redundancy (TMR)Mark VI control systems can be used in small applications and large integrated systems, with control ranging from a single module to multiple distributed modules. The system's throughput allows the operation of up to nine I/O boards of a 21-slot VME rack, including data voting, in 40 milliseconds. In an approach called software Implementation Fault tolerance, input votes in software (SIFT). Each control module's VCMI board receives input from the control module backplane and other modules through its own IONet.
In addition to general purpose I/O, the Mark VI has a number of boards designed for direct communication with specific sensors and actuators. In many cases, this minimizes or eliminates a large number of inserted instruments. As a result, many possible single points of failure in the most critical areas are eliminated, improving operational reliability and reducing long-term maintenance costs. Thanks to the direct connection to the sensors and actuators, diagnostics can also be directly queried on the device for optimal results. This information is used to evaluate the performance of devices and systems. The elimination of peripheral meters reduces spare parts inventory, which is a subtle benefit of this design.
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