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5X00500G01电源接口模块
要正确设置模拟输入模块，八位DIP开关必须与位于左侧的五位DIP开关的SW5一起设置单元这些开关确定输入范围、输出格式、要平均化的样本和输入类型。B875–200可配置A/D输入，概述概述B875–200可配置A/D输入模块可转换多种信号源：热电偶、RTD、应变计/称重传感器、电压和电流输入范围二进制数据。当为八个通道选择时，模块显示在I/O中地图为B875–200；当为四个通道选择时，它显示在I/O图中作为B873-200。该模块提供了轮询各种现场设备的能力，需要不同的信号源取决于所选的应用。选择可能是由超过48个可用的输入包组成，每个模块的任何组合可以接受。
八位DIP开关用于根据单元此外，两位跳线用于选择0、2或4个样本每个输入的平均值。平均有助于减少虚假噪声对输入。
一些应用示例包括食品加工、压榨操作、化学加工、涂漆和铸造。
该模块有四/八个模拟输入，能够更新所有八个通道每4毫秒一次。
所有范围的12位分辨率和绝对精度取决于输入包类型。
这允许快速精确地控制应用输入包插入程序使用以下步骤插入所需的输入包。
步骤操作
1取下与所需输入包位置相对应的通道拉出卡舌。
2将输入包插入对应于所需通道的模块右侧。排列输入包，以便菲利普斯头螺钉位于顶部，14根引线位于底部。3拧紧十字头螺钉。
注：当使用AS–5B3201A或AS–5B32002A电流输入包时
易熔电阻器也必须插入电路板。合适的熔断电阻器（Modicon部件号AS–0418–000）随当前输入包提供。
注：插入输入包之前，务必插入可熔断电阻器。如果易熔电阻器是矩形的，确保有两根引线的一侧靠近输入包。
注：切勿在相邻通道之间放置熔断电阻器。这可以是当易熔电阻器隐藏电路板上通道标签上的CH时检测到。
4找到模块随附的写在标签上的标牌（Modicon零件号AS–157A–000）。确保输入包目录编号和每个输入的输入寄存器编号安装的包在标签上有明确标识。
B875–200 Configurable A/D Input
Overview General The B875–200 Configurable A/D Input Module converts a variety of signal sources: thermocouple, RTD, strain gauge/load cell, voltage and current input ranges into binary data. When selected for eight channels, the module is displayed in the I/O map as a B875–200; when selected for four channels, it is displayed in the I/O map as a B873-200. The module provides the capability to poll a wide array of field devices requiring different signal sources based upon the application selected. Selection may be made from more than 48 available input packs, with any mix per module being acceptable. An eight-position DIP switch is used to select from one to eight input channels per module. In addition, a two-position jumper is used to select either 0, 2, or 4 samples to be averaged per input. Averaging helps reduce the impact of spurious noise on the input. Some application examples include food processing, press operating, chemical processing, painting, and foundry casting. The module has four/eight analog inputs and is capable of updates to all eight channels every 4 ms. The 12-bit resolution for all ranges, and the absolute accuracy is dependent on the input pack type. This allows for fast and precise control of the application.
To set up the analog input module properly, an eight-position DIP-switch must be set together with SW5 of a five-position DIP switch located on the left side of the module. These switches determines the input range, output format, number of samples to be averaged, and the types of inputs.
Input Pack Insertion
Procedure Use the following procedure to insert the required input pack. Step Action 1 Remove channel pull-off tabs that correspond with desired input pack placement. 2 Insert input packs into right side of module corresponding to desired channels. Align input pack so that Phillips-head screw is on top and 14 leads are at bottom. 3 Tighten Phillips-head screw. Note: When using either a AS–5B32001A or AS–5B32002A current input pack, a fusible resistor must also be inserted into the board. The proper fusible resistor (Modicon part # AS–0418–000) comes with the current input pack. Note: Always insert the fusible resistor before inserting the input pack. If the fusible resistor is rectangular, ensure that the side with two leads is next to the input pack. Note: Never place the fusible resistor between adjacent channels. This can be detected when the fusible resistor hides the CH on the CHANNEL label on the board. 4 Locate write-on label plate (Modicon part # AS–157A–000) shipped with module. Ensure that input pack catalog numbers and input register numbers for each input pack installed are clearly identified on label.
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