IS200VAICH1D VAIC 触点输入组隔离端子板

IS200VAICH1D是一个触点输入组隔离端子板由通用电气开发。VAIC(模拟输入/输出控制)板接受20路模拟输入并控制4路模拟输出。每个端子板上有十个输入和两个输出。端子板通过电缆连接到容纳VAIC处理板的VME机架。VAIC将输入转换为数字值,并将其发送到VCMI板,然后通过VME背板将其发送到控制器。VAIC将数字值转换为模拟电流,并通过端子板将其驱动到客户电路中。VAIC支持单模块和三模块冗余(TMR)应用。

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IS200VAICH1D VAIC 触点输入组隔离端子板特点:

IS200VAICH1D规格

零件号:IS200VAICH1D
制造商:通用电气
制造国:美国
产品类型:触点输入组隔离端子板
系列:马克六世

IS200VAICH1D是一个触点输入组隔离端子板由通用电气开发。VAIC(模拟输入/输出控制)板接受20路模拟输入并控制4路模拟输出。每个端子板上有十个输入和两个输出。端子板通过电缆连接到容纳VAIC处理板的VME机架。VAIC将输入转换为数字值,并将其发送到VCMI板,然后通过VME背板将其发送到控制器。VAIC将数字值转换为模拟电流,并通过端子板将其驱动到客户电路中。VAIC支持单模块和三模块冗余(TMR)应用。

  • 在TMR设置中使用时,端子板的输入信号分散到三个VME板机架R、S和T上,每个机架都包含一个VAIC。IS200VAICH1D是GE开发的触点输入组隔离端子板。
  • VAIC(模拟输入/输出控制)板接受20路模拟输入并控制4路模拟输出。每个端子板上有十个输入和两个输出。端子板通过电缆连接到容纳VAIC处理板的VME机架。
  • VAIC将输入转换为数字值,并将其发送到VCMI板,然后通过VME背板将其发送到控制器。VAIC将数字值转换为模拟电流,并通过端子板将其驱动到客户电路中。
  • VAIC支持单模块和三模块冗余(TMR)应用。在TMR设置中使用时,端子板的输入信号分散到三个VME板机架R、S和T上,每个机架都包含一个VAIC。

IS200VAICH1D兼容性

VAIC板分为两代,每一代都有自己的端子板。VAICH1C之前的所有版本都包含在原始VAIC中。这一代还包括VAICH1B。这些板在驱动20 mA输出时,可在1000英尺长的#18电线末端承受高达500的负载电阻。为了实现最佳运行,这一代电路板需要TBAIH1B或更早版本的端子板。它们也与所有DTAI端子板版本兼容。

装置

要安装V型板,请遵循以下说明。

  • 关闭VME处理器机架。
  • 要安装主板的边缘连接器,请将其滑入并用手推动顶部和底部的拉杆。
  • 拧紧前面板顶部和底部的自持螺钉。

操作

信号调理、模拟多路复用器、模数转换器和数模转换器均包含在VAIC板上,该板接收20路模拟输入并控制4路模拟输出。端子板上的跳线指定模拟输入的类型,可以是电压、4-20 mA或1 mA。
四个模拟输出电路中的两个为4-20 mA,而另外两个为4-20 mA或0-200 mA。

IS200VAICH1D诊断

  • VAIC前面板的状态由顶部的三个led显示。运行状态呈绿色闪烁,而失败状态呈红色常亮。第三个LED显示状态,通常不亮,但如果电路板出现诊断警报情况,则持续闪烁橙色。包括以下诊断测试:
  • 使用预先确定为接近工作范围极限的不可定制的高电平和低电平对每个模拟输入进行硬件极限测试。设置逻辑信号,如果超过此限值,则不再检查输入。如果输入达到任何硬件限制,整个电路板会生成一个名为L3DIAG VAIC的复合诊断警告。工具箱中提供了有关每个诊断的信息。单个诊断信号可被锁存,复位DIA信号可用于复位它们。
  • 每个输入的系统限值检查基于可编程的高值和低值。这些限制可以针对启用/禁用和锁定/非锁定进行调整,可用于触发警报。越界通过复位系统复位。
  • 在TMR系统中,如果信号偏离中值(投票值)超过预定量,就会识别出一个信号并发出缺陷。这可以给出一个问题在一个通道中出现的早期警告。
  • 注意您的数模输出、输出电流、总电流、自杀继电器和20/200 mA定标继电器,因为这些都容易发生故障,并受到合理性监控。
  • VAIC检查TBAI身份证。带有端子板序列号、板类型、修订号以及JR、JS和JT连接器位置的只读芯片是板ID的编码位置。当I/O处理器读取芯片并遇到不匹配时,就会触发硬件不兼容故障。

压缩机失速检测

固件以200 Hz的频率执行燃气轮机压缩机失速检测。有两种失速算法可用。两者都使用前四路模拟输入,扫描频率为200 Hz。参考图片“微型(LM)燃气轮机压缩机失速检测方法”,一种算法适用于小型LM燃气轮机,并采用两个压力传感器。另一种技术(见图,重型燃气轮机压缩机失速检测算法)用于重型燃气轮机,并利用三个压力传感器。为清晰起见,实时输入和可配置参数被分开。参数CompStalType选择所需的算法类型,两个或三个传感器。PS3是压缩机排气压力。该压力下降(PS3下降)表明压缩机可能失速。该算法还计算排气压力的变化率dPS3dt,并将这些值与配置的失速参数(KPS3常数)进行比较。

IS200VAICH1D特性

频道数量

每个VAIC板24个通道(20个AI,4个AO)(双端子板)

输入跨度

4-20毫安、1毫安、5伏直流电、10伏直流电

输入转换器分辨率

具有14位分辨率的16位模数转换器

功率消耗

低于31兆瓦

压缩机失速检测

IS200TREGH1BEC

IS200VAICH1D SPECIFICATIONS

Part No.: IS200VAICH1D
Manufacturer: General Electric
Country of Manufacture: United States
Product Type: Contact Input Group Isolation terminal board
Series: Mark VI

IS200VAICH1D is a Contact Input Group Isolation terminal board developed by GE. The VAIC (Analog Input/Output Control) board accepts 20 analog inputs and controls four analog outputs. Ten inputs and two outputs are available on each terminal board. The terminal board is connected to the VME rack, which houses the VAIC processing board, through cables. VAIC converts the inputs to digital values and sends them to the VCMI board, which then sends them to the controller through the VME backplane. The VAIC translates digital values to analog currents and drives them into the customer circuit via the terminal board. Both simplex and triple modular redundant (TMR) applications are supported by VAIC.

  • The terminal board’s input signals are fanned out to three VME board racks R, S, and T, each containing a VAIC, when used in a TMR setup. IS200VAICH1D is a Contact Input Group Isolation terminal board developed by GE.
  • The VAIC (Analog Input/Output Control) board accepts 20 analog inputs and controls four analog outputs. Ten inputs and two outputs are available on each terminal board. The terminal board is connected to the VME rack, which houses the VAIC processing board, through cables.
  • VAIC converts the inputs to digital values and sends them to the VCMI board, which then sends them to the controller through the VME backplane. The VAIC translates digital values to analog currents and drives them into the customer circuit via the terminal board.
  • Both simplex and triple modular redundant (TMR) applications are supported by VAIC. The terminal board’s input signals are fanned out to three VME board racks R, S, and T, each containing a VAIC, when used in a TMR setup.

IS200VAICH1D Compatibility

The VAIC board comes in two generations, each with its own terminal board. All versions before to and including VAICH1C are included in the original VAIC. This generation also includes VAICH1B. These boards can sustain up to 500 load resistance at the end of 1000 feet of #18 wire while driving 20 mA outputs. For optimal operation, this generation of board requires terminal board TBAIH1B or earlier. They are also compatible with all DTAI terminal board revisions.

Installation

To install the V-type board, follow these instructions.

  • Turn the VME processor rack off.
  • To seat the board’s edge connectors, slide it in and push the top and bottom levers in with your hands.
  • Tighten the captive screws on the front panel’s top and bottom.

Operation

Signal conditioning, an analog MUX, an A/D converter, and a D/A converter are all included on the VAIC board, which receives 20 analog inputs and controls four analog outputs. Jumpers on the terminal board specify the kind of analog input, which can be voltage, 4-20 mA, or 1 mA.
Two of the four analog output circuits are 4-20 mA, while the other two are 4-20 mA or 0-200 mA.

IS200VAICH1D Diagnostics

  • The state of the VAIC front panel is shown by three LEDs at the top. The RUN state is flashing green, whereas the FAIL condition is a solid red. The third LED shows STATUS and is ordinarily off, but flashes a constant orange if the board has a diagnostic alert condition. The following diagnostic tests are included:
  • Hardware limit testing is performed on each analog input using non-customizable high and low levels that are predetermined to be near the limits of the operational range. A logic signal is set and the input is no longer examined if this limit is exceeded. The entire board generates a composite diagnostic warning called L3DIAG VAIC if any hardware limit on the input is reached. Information about each diagnosis is available from the toolbox. Individual diagnostic signals may be latched, and the RESET DIA signal may be used to reset them.
  • System limit checking for each input is based on programmable high and low values. These restrictions, which can be adjusted for enable/disablement and latching/non-latching, can be utilized to trigger alarms. The out of bounds are reset via RESET SYS.
  • In TMR systems, one signal is recognized and a defect is issued if it deviates from the median value—the value that was voted on—by more than a predefined amount. This may give an early warning that a problem is emerging in one channel.
  • Take note of your D/A outputs, output currents, total current, suicide relays, and 20/200 mA scaling relays, as these are all susceptible to faults and are monitored for reasonability.
  • VAIC examines the TBAI ID card. A read-only chip with the terminal board serial number, board type, revision number, and the location of the JR, JS, and JT connectors is where the board ID is encoded. A hardware incompatibility fault is triggered when the I/O processor reads the chip and encounters a mismatch.

Compressor Stall Detection

Gas turbine compressor stall detection is performed at 200 Hz by the firmware. There are two stall algorithms available. The first four analog inputs, scanned at 200 Hz, are used by both. Referring to the picture, Tiny (LM) Gas Turbine Compressor Stall Detection Approach, one algorithm is for small LM gas turbines and employs two pressure transducers. The other technique (see the picture, Heavy Duty Gas Turbine Compressor Stall Detection Algorithm) is for heavy-duty gas turbines and makes use of three pressure transducers. For clarity, real-time inputs and configurable parameters are divided. The parameter CompStalType selects the type of algorithm required, either two transducers or three. PS3 is the compressor discharge pressure. A drop in this pressure (PS3 drop) indicates a possible compressor stall. The algorithm also calculates the rate of change of discharge pressure, dPS3dt, and compares these values with configured stall parameters (KPS3 constants).

IS200VAICH1D Features

Number of channels

24 channels per VAIC board (20 AI, 4 AO) (two-terminal boards)

Input span

4-20 mA, ±1 mA, ±5 V dc, ±10 V dc

Input converter resolution

16-bit A/D converter with 14-bit resolution

Power consumption

Less than 31 MW

Compressor stall detection

Within 30 milliseconds, detection and relay operation are completed.

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