FBM214 P0922VT   通信输入接口模块  为所有8个通道供电

概述

FBM214 P0922VT通信输入接口模块包含8个4至20mA组隔离模拟输入通道。FBM214支持标准4到20 mA器件和HART器件的任意组合。

该FBM214作为HART通信现场设备主机，使VA系列系统请求和接收来自现场设备每秒两个数字消息。消息传递能力可用于支持HART通用性。通常的做法，和设备特定的命令，但不是突发通信模式。

该FBM214 P0922VT提供了一个共同的隔离电源，为所有8个通道供电。可选地，通道可以由外部电源供电。然而，当一个共同的外部电源用于两个或多个通道时，需要一个电缆巴伦模块来防止通道串扰。

特点

FBM214 P0922VT模块的主要特点是

8个模拟输入通道，每个通道接受以下输入之一

标准的4至20 mA模拟传感器信号

数字HART频移键控(FSK)信号叠加在4至20 mA模拟输入信号上

FSK调制解调器专用于每个输入通道，用于与HART现场设备进行双向数字通信

将来自HART设备的4至20 mA输入信号的每一个进行模数转换

紧凑的设计

FBM214 P0922VT具有紧凑的设计，坚固耐用的挤压铝外壳，用于电路的物理保护。根据ISA标准S71.04，为安装FBM而专门设计的外壳提供了不同级别的生态环境保护。

对于高精度，该模块采用了西格玛Delta转换器，可以提供新的模拟输入值为每个通道，每100毫秒。

summarize

The FBM214 P0922VT communication input interface module contains eight isolated analog input channels in groups 4 to 20mA. The FBM214 supports any combination of standard 4 to 20 mA devices and HART devices.

The FBM214 serves as a HART communication field device host, enabling VA series systems to request and receive two digital messages per second from field devices. Messaging capabilities can be used to support HART universality. Common practice, and device-specific commands, but not in burst communication mode.

The FBM214 P0922VT provides a common isolated power supply that powers all eight channels. Optionally, the channel can be powered by an external power source. However, when a common external power supply is used for two or more channels, a cable Barron module is required to prevent channel crosstalk.

peculiarity

The main features of the FBM214 P0922VT module are

Eight analog input channels, each accepting one of the following inputs

Standard 4 to 20 mA analog sensor signal

The digital HART frequency shift keying (FSK) signal is superimposed on the 4 to 20 mA analog input signal

FSK modems are dedicated to each input channel for two-way digital communication with HART field devices

Each of the 4 to 20 mA input signals from the HART device is converted analog-to-digital

Compact design

The FBM214 P0922VT features a compact design with a rugged extruded aluminum housing for the physical protection of the circuit. According to ISA standard S71.04, specially designed enclosures for the installation of FBM provide different levels of ecological environmental protection.

For high precision, the module employs a Sigma Delta converter that can provide new analog input values for each channel, every 100 milliseconds.