描述
主要产品详情及功能
模拟输入模块：其主要功能是将来自变送器、传感器（例如压力、温度、流量传感器）和变送器等现场设备的模拟信号（连续电信号）转换为横河电机现场控制站(FCS)可以处理的数字数据。
16通道，非隔离：AAI141-H50 S2提供16个输入通道。“非隔离”是指输入通道共用一个接地参考点。虽然这在某些应用中简化了接线，但也意味着各个通道之间以及通道与系统之间没有电气隔离，这在某些工业环境中可能需要考虑抗噪性能。
输入信号类型：该模块设计用于接收标准工业模拟信号：
4至20 mA直流电流输入：这是工业自动化中最常见的电流环标准，因为它具有抗噪能力强且能够检测断线。
1至5 V直流电压输入：另一种常见的模拟信号标准。
它提供灵活的设置功能，可基于每个通道使用设置引脚，设置两线或四线变送器。
HART通信功能：AAI141-H50中的“-H”表示该模块支持HART（高速可寻址远程传感器）协议通信。这项重要功能使FCS不仅可以读取主要模拟变量(4-20 mA)，还可以与支持HART的“智能”现场设备进行数字通信。这实现了高级诊断、远程配置以及从仪表访问次要变量的功能。
精度和性能：
精度：电流输入通常为±16μA，电压输入通常为±4mV。
数据更新周期：10毫秒，表明数据采集速度相对较快。
阶跃响应时间：100毫秒。
变送器电源：该电源为两线制变送器提供约14.8 V（20 mA时）至26.4 V（0 mA时）的电源，输出电流限值为27 mA。
兼容性：该电源设计用于与各种横河FCS型号无缝集成。它还可以用于双冗余配置，以提高系统可靠性和可用性，这在关键过程控制应用中很常见。
坚固耐用的设计：横河模块以其在工业环境中的可靠性而闻名。该模块具有允许输入电流/电压（例如，电流输入为27 mA，电压输入为±7.5V）和输入电阻（例如，通电时：电流输入为400Ω至1000Ω）的规格。
后缀代码解析(AAI141-H50 S2)：
AAI141：模拟量输入模块（4-20 mA，16通道，非隔离）基本型号。
-H：带数字通信功能（HART协议）。
5：无防爆保护（适用于非危险区域）。
0：基本型（无特殊选项）。
S2：指示具体的软件或硬件版本。
通用规格
制造商：横河
产品类型：模拟量输入模块
通道：16，非隔离
输入信号：4-20 mA DC，1-5 V DC
HART通信：支持
精度：±16μA（电流），±4mV（电压）
数据更新周期：10 ms
功耗：典型值310 mA(5 V DC)，450 mA(24 V DC)
重量：约0.2 kg
外部连接：支持压接端子、KS电缆或MIL连接器电缆进行现场接线。
兼容性：横河CENTUM系列FCS（现场控制站）。
Key Product Details and Functions
Analog Input Module:Its primary function is to convert analog signals(continuous electrical signals)from field devices such as transmitters,sensors(e.g.,for pressure,temperature,flow),and transducers into digital data that the Yokogawa Field Control Station(FCS)can process.
16-Channel,Non-Isolated:The AAI141-H50 S2 provides 16 input channels.”Non-isolated”means that the input channels share a common ground reference.While it simplifies wiring for some applications,it means there’s no galvanic isolation between individual channels or between channels and the system,which can be a consideration for noise immunity in certain industrial environments.
Input Signal Types:It is designed to receive standard industrial analog signals:
4 to 20 mA DC current input:This is the most common current loop standard in industrial automation due to its robustness against noise and ability to detect broken wires.
1 to 5 V DC voltage input:Another common standard for analog signals.
It offers flexibility in setting whether it’s for 2-wire or 4-wire transmitters on a per-channel basis using setting pins.
HART Communication Capability:The”-H”in AAI141-H50 signifies that this module supports HART(Highway Addressable Remote Transducer)protocol communication.This is a significant feature that allows the FCS to not only read the primary analog variable(4-20 mA)but also communicate digitally with”smart”HART-enabled field devices.This enables advanced diagnostics,remote configuration,and access to secondary variables from the instrument.
Accuracy and Performance:
Accuracy:Typically specified as±16μA for current input and±4mV for voltage input.
Data Update Period:10 ms,indicating relatively fast data acquisition.
Step Response Time:100 ms.
Transmitter Power Supply:It provides a power supply for 2-wire transmitters within a range of approximately 14.8 V(at 20 mA)to 26.4 V(at 0 mA),with an output current limit of 27 mA.
Compatibility:Designed to integrate seamlessly with various Yokogawa FCS models.It can also be used in dual-redundant configurations to enhance system reliability and availability,which is common in critical process control applications.
Robust Design:Yokogawa modules are known for their reliability in industrial settings.The module has specifications for allowable input current/voltage(e.g.,27 mA for current input,±7.5V for voltage input)and input resistance(e.g.,Power ON:400Ωto 1000Ωfor current input).
Suffix Code Breakdown(AAI141-H50 S2):
AAI141:Base model for Analog Input Module(4-20 mA,16-channel,non-isolated).
-H:With digital communication(HART protocol).
5:With no explosion protection(for non-hazardous areas).
0:Basic type(no special options).
S2:Indicates the specific software or hardware revision.
General Specifications
Manufacturer:Yokogawa
Product Type:Analog Input Module
Channels:16,non-isolated
Input Signals:4-20 mA DC,1-5 V DC
HART Communication:Yes
Accuracy:±16μA(current),±4mV(voltage)
Data Update Period:10 ms
Power Consumption:Typically 310 mA(5 V DC),450 mA(24 V DC)
Weight:Approximately 0.2 kg
External Connection:Supports pressure clamp terminal,KS cable,or MIL connector cable for field wiring.
Compatibility:Yokogawa CENTUM series FCS(Field Control Stations).
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