IS200GGXIG1AFE/IS200DSPXH2CAA工控模块系统备件
最小切换率提供了模块计算平均故障间隔时间（MTBF）10%内正常不可检测故障的故障覆盖率。4.双DO模块定期对每个输出点执行一整套诊断。所有故障都是100%可检测的，并由每个通道独立报告给主处理器。输出电路中的特定故障会迫使输出处于关闭（断电）状态。5.卡在关闭位置的故障会导致负载/保险丝报警和双DO模块中的故障。如果双DO模块检测到负载/保险丝警报，则禁用向热备用模块的正常切换。此操作可防止输出因卡在关闭位置的故障而被迫关闭，然后在几秒钟后切换后被迫重新打开。要允许切换到正常模块，请重新安置备用模块。表45 3664和3674双数字输出规格（续）功能规格124第2章Tricon v9–v10系统脉冲输入模块的系统组件规划和安装指南本节介绍了可用于Tricon v9-v10系统的脉冲输入模块。有关重要的操作限制，请参阅第192页的脉冲输入安装和操作。脉冲输入模块提供八个非常灵敏的高频输入，与涡轮或压缩机等旋转设备上常见的非放大磁转速传感器一起使用。该模块感测来自磁传感器输入设备的电压转变。转换在选定的时间窗口（速率测量）期间累积，所得计数用于生成频率或RPM，并传输到主处理器。脉冲计数测量为1微秒分辨率。通常与脉冲输入模块一起使用的速度传感器类型由感应线圈和旋转齿组成。传感器物理上靠近旋转轴上齿轮的齿。当轴旋转并且齿移动经过传感器时，磁场的变化导致传感器中产生正弦信号。输出电压的大小取决于齿通过传感器的速度、传感器和齿之间的距离以及传感器的结构。一个典型的齿轮有30到120个齿，它们围绕其圆周等距分布。输出频率与轴的转速和齿数成比例。脉冲输入模块有三个隔离的输入通道。每个输入通道独立地处理输入到模块的所有数据，并将数据传递到主处理器，在主处理器中，在处理之前进行表决，以确保最高的完整性。每个模块在每个通道上提供完整的持续诊断。任何通道上的任何诊断失败都会激活模块的故障指示灯，进而激活底盘报警信号。故障指示灯指示通道故障，而不是模块故障。模块保证在出现单个故障时正常运行，并且在出现某些类型的多个故障时可以继续正常运行。脉冲输入模块包括热备用功能，需要单独的现场终端（远程外部终端面板的电缆接口）。每个脉冲输入模块均采用机械键控，以防止在配置的机箱中安装不当。表46脉冲输入模块型号点类型模块说明3510 8 TMR脉冲输入3511 8 TMR脉冲输出注意事项脉冲输入模块使用全差分输入信号调节电路，该电路为交流耦合且具有高带宽。该电路设计用于高频操作，对可能导致错误测量的任何类型的波形失真都很敏感。模块通过仅检查每个脉冲的一个边缘来计数转变，这意味着输入信号上的振铃会导致许多额外的转变被计数。该模块每秒能够计数超过20000次转换。Tricon v9–v10系统的脉冲输入模块125规划和安装指南脉冲输入示意图此图是3510和3511型（脉冲输入模块）的简化示意图。图52 3510和3511简化示意图+-总线Xcvr总线Xcvr-总线Xcvr A B C单个点场测试智能I/O控制器（S）三重I/O总线脉冲输入电路-典型点计数器/定时器计数器/定时器计算器/定时器比较器比较器+-+-AC耦合AC耦合其他点其他点µProcµProc 126章2 Tricon v9–v10系统脉冲输入前面板的系统组件规划和安装指南此图显示了3510和3511型的前面板。图53 3510和
The minimum toggle rate provides fault coverage of normally undetectable faults within 10% of the calculated mean-time-between-faults (MTBF) for the module. 4. The Dual DO module performs a complete set of diagnostics on each output point periodically. All faults are 100% detectable and are independently reported to the Main Processor by each channel. Specific faults in the output circuitry can force the output to the Off (de-energized) state. 5. A stuck-Off fault results in both a Load/Fuse alarm and a fault in the Dual DO Module. If a Load/Fuse alarm is detected by the Dual DO Module, normal switch-over to a hot-spare module is disabled. This action prevents the output from being forced Off by a stuck-Off fault and then forced back On after the switch-over a few seconds later. To allow switch-over to a healthy module, re-seat the spare module. Table 45 3664 and 3674 Dual Digital Output Specifications (continued) Feature Specification 124 Chapter 2 System Components Planning and Installation Guide for Tricon v9–v10 Systems Pulse Input Modules This section describes the Pulse Input Modules available for use with Tricon v9–v10 systems. For important operational restrictions, see Pulse Input Installation and Operation on page 192. Pulse Input Modules provide eight very sensitive, high-frequency inputs, which are used with non-amplified magnetic speed sensors common on rotating equipment such as turbines or compressors. The module senses voltage transitions from magnetic transducer input devices. The transitions are accumulated during a selected window of time (rate measurement), and the resulting count is used to generate a frequency or RPM which is transmitted to the Main Processors. The pulse count is measured to 1 microsecond resolution. The type of speed sensor typically used with the Pulse Input Module consists of an inductive coil and rotating teeth. The sensor is physically close to the teeth of a gear on the rotating shaft. As the shaft rotates and the teeth move past the sensor, the resulting change in the magnetic field causes a sinusoidal signal to be induced in the sensor. The magnitude of the output voltage depends on how fast the teeth pass the sensor, the distance between the sensor and the teeth, and the construction of the sensor. A typical gear has 30 to 120 teeth spaced at equal distances around its perimeter. The output frequency is proportional to the rotational speed of the shaft and the number of teeth. Pulse Input Modules have three isolated input channels. Each input channel independently processes all data input to the module and passes the data to the Main Processors, where it is voted just prior to processing to ensure the highest integrity. Each module provides complete ongoing diagnostics on each channel. Failure of any diagnostic on any channel activates the module’s Fault indicator, which in turn activates the chassis alarm signal. The Fault indicator points to a channel fault, not a module failure. The module is guaranteed to operate properly in the presence of a single fault and may continue to operate properly with certain kinds of multiple faults. Pulse Input Modules include the hot-spare feature and require a separate field termination (a cable interface to a remotely located External Termination Panel). Each Pulse Input Module is mechanically keyed to prevent improper installation in a configured chassis. Table 46 Pulse Input Modules Model Points Type Module Description 3510 8 TMR Pulse Input 3511 8 TMR Pulse Input CAUTION Pulse Input Modules use fully differential, input-signal-conditioning circuitry which are AC-coupled and of high bandwidth. The circuitry is designed for high-frequency operation and is sensitive to any type of waveform distortion which could result in erroneous measurements. The modules count transitions by examining only one edge of each pulse, which means that ringing on the input signal can result in many additional transitions being counted. The module is capable of counting over 20,000 transitions per second. Pulse Input Modules 125 Planning and Installation Guide for Tricon v9–v10 Systems Pulse Input Schematic This figure is a simplified schematic for models 3510 and 3511, which are Pulse Input Modules. Figure 52 3510 and 3511 Simplified Schematic + - Bus Xcvr Bus Xcvr Bus Xcvr A B C Individual Point Field Te mr inations INTELLIGENT I/O CONTROLLER(S) TRIPLICATED I/O BUS PULSE INPUT CIRCUIT – TYPICAL POINT Counter/ Timer Counter/ Timer Counter/ Timer Comparator Comparator Comparator + - + - AC Coupled AC Coupled AC Coupled Other Points Other Points Other Points µProc µProc µProc 126 Chapter 2 System Components Planning and Installation Guide for Tricon v9–v10 Systems Pulse Input Front Panels This figure shows the front panels of models 3510 and 3511. Figure 53 3510 and
