描述
NI CFP-AI-111是一款高性能的16通道模拟电流输入模块，专为工业自动化和过程控制系统设计。以下是其核心功能与技术特点的综合解析：
一、核心参数
通道与分辨率
16通道单端模拟输入，支持16位分辨率，提供高精度电流信号测量。
输入范围：±20 mA、4-20 mA、0-20 mA可选，支持±5%超量程测量（例如±21 mA）。
滤波与采样率
集成梳状滤波器，支持50 Hz、60 Hz、500 Hz三种基频抑制，基频处抑制95 dB，谐波处抑制≥60 dB。
更新率：3 Hz至0.83 Hz可调，适用于不同频率信号采集。
保护与隔离
过压保护：高达2,300 Vrms瞬态保护。
过流保护：±30 mA集成保护，防止输入端异常电流损坏设备。
隔离接地参考：16通道共用隔离地，增强抗干扰能力。
二、技术特点
工业级设计
工作温度范围：-40℃至70℃，存储温度：-55℃至85℃，非冷凝湿度10%-90%RH。
振动耐受：随机/正弦振动5 grms（10-500 Hz），适应恶劣环境。
灵活配置
支持FieldPoint和Compact FieldPoint系统，可热插拔安装，不影响系统运行。
输入阻抗100Ω，兼容多种传感器与信号源。
实时监测与诊断
板载诊断功能，实时反馈模块状态，简化维护流程。
红/绿LED指示灯，直观显示通道状态。
三、应用领域
工业自动化：监测温度、压力、流量等模拟信号，实现闭环控制。
能源管理：电力系统电流监测、智能电表数据采集。
过程控制：化工、制药行业工艺参数实时监控。
测试测量：实验室高精度电流信号分析与校准。
四、设计优势
紧凑性：尺寸4.3×4.3×3.6英寸，适合空间受限场景。
兼容性：支持PXI Express接口，可与NI其他模块无缝集成。
NI CFP-AI-111 is a high-performance 16-channel analog current input module designed for industrial automation and process control systems.The following is a comprehensive analysis of its core functions and technical features:
I.Core parameters
Channels and resolution
16-channel single-ended analog input,supporting 16-bit resolution,providing high-precision current signal measurement.
Input range:±20 mA,4-20 mA,0-20 mA optional,supporting±5%over-range measurement(for example,±21 mA).
Filtering and sampling rate
Integrated comb filter,supporting three fundamental frequency suppressions of 50 Hz,60 Hz,and 500 Hz,95 dB suppression at the fundamental frequency,and≥60 dB suppression at the harmonics.
Update rate:adjustable from 3 Hz to 0.83 Hz,suitable for different frequency signal acquisition.
Protection and isolation
Overvoltage protection:up to 2,300 Vrms transient protection.
Overcurrent protection:±30 mA integrated protection to prevent abnormal current at the input from damaging the device.
Isolation ground reference:16 channels share isolation ground to enhance anti-interference ability.
2.Technical features
Industrial-grade design
Operating temperature range:-40℃to 70℃,storage temperature:-55℃to 85℃,non-condensing humidity 10%-90%RH.
Vibration tolerance:random/sinusoidal vibration 5 grms(10-500 Hz),adaptable to harsh environments.
Flexible configuration
Supports FieldPoint and Compact FieldPoint systems,hot-swappable installation without affecting system operation.
Input impedance 100Ω,compatible with a variety of sensors and signal sources.
Real-time monitoring and diagnosis
Onboard diagnostic function,real-time feedback of module status,simplifying maintenance process.
Red/green LED indicator,intuitive display of channel status.
3.Application field
Industrial automation:monitoring analog signals such as temperature,pressure,flow,etc.,to achieve closed-loop control.
Energy management:power system current monitoring,smart meter data acquisition.
Process control:real-time monitoring of process parameters in chemical and pharmaceutical industries.
Test measurement:laboratory high-precision current signal analysis and calibration.
4.Design Advantages
Compactness:The size is 4.3×4.3×3.6 inches,suitable for space-constrained scenarios.
Compatibility:Supports PXI Express interface and can be seamlessly integrated with other NI modules.
