FBM211  输入接口模块  接受一个2线模拟传感器输入

型号：FBM211

特点：高精度

紧凑型FBM211,0至20 mA输入接口模块包含16个20毫安的直流模拟输入通道，每个通道接受一个2线模拟传感器输入，如4至20毫安发射器，一个行结束标志电阻的行监控数字输入信号，或一个自供电的20毫安源。输入通道与接地和模块逻辑电隔离。该模块执行将来自现场传感器的电输入信号接口到FCP所需的信号转换。

它是紧凑型200系列/0子系统概述(PSS41H-2COV)中所述紧凑型200系列I/0子系统的一部分。

紧凑型FBM211执行模拟输入应用程序，它提供了转换时间和变化限制率可配置的选项。

16个20 mA直流模拟量输入通道

每组8个输入通道被分组隔离

紧凑、坚固的设计，适用于G3级(恶劣)环境中的外壳

执行模拟输入应用程序，提供转换时间和变化率限制的可配置选项

通过每个通道的sigma-delta数据转换实现高精度

端接组件(TA)，用于本地或远程将现场布线连接到紧凑型FBM211t

外部或现场总线模块(FBM)供电变送器的TA

为了实现高精度，该模块采用了所有通道共享的多路复用Sigma-Delta转换器，可每100 ms提供一次新的模拟输入读数，以及可配置的积分周期，以消除任何工艺噪声和电源线频率。在每个时间段内，FBM将每个模拟输入转换为数字值，在该时间段内对这些值进行平均，并将平均值提供给控制器。

Model: FBM211

Features: High precision

The compact FBM211,0 to 20 mA input interface module contains 16 20 Ma DC analog input channels, each accepting a 2-wire analog sensor input such as a 4 to 20 mA transmitter, a line-monitoring digital input signal with a line-end marker resistor, or a self-powered 20 Ma source. The input channel is electrically isolated from the grounding and module logic. The module performs the signal conversion required to interface the electrical input signal from the field sensor to the FCP.

It is part of the Compact 200 Series I/0 subsystem described in the Compact 200 Series /0 Subsystem Overview (PSS41H-2COV).

The compact FBM211 performs analog input applications, which provide configurable options for conversion times and change limit rates.

16 20 mA DC analog input channels

Each group of 8 input channels is isolated in groups

Compact, rugged design for enclosures in G3 (harsh) environments

Execute an analog input application with configurable options for conversion time and rate of change limits

High precision is achieved through sigma-delta data conversion on each channel

The termination assembly (TA) is used to connect field cabling locally or remotely to the compact FBM211t

An external or fieldbus module (FBM) powers the transmitter TA

To achieve high accuracy, the module features a multiplexed Sigma-Delta converter shared across all channels that provides a new analog input reading every 100 ms, as well as a configurable integration cycle to eliminate any process noise and power line frequencies. In each time period, the FBM converts each analog input into a digital value, averages these values over that time period, and provides the average to the controller.