ABB AI880A 高完整性模拟量输入模块（S800 I/O）
一、基础信息
- 完整物料号：3BSE039293R1
- 所属系列：ABB S800 I/O，配套 AC800M DCS 控制器
- 定位：SIL3 安全级、带 HART、分组隔离、支持冗余高性能模拟量输入卡，用于工艺安全回路、振动 / 温度 / 压力变送器采集ABB
- 通道：8 路单端电流输入（4–20mA / 0–20mA）
二、核心功能亮点
- 安全认证IEC 61508 SIL3、EN 954-1 Cat.4，可用于机组联锁、ESD 安全回路
- HART 透传支持 HART 智能变送器，控制器可读取设备诊断、量程、故障信息，无需额外 HART 适配器
- 变送器回路供电每通道内置限流外供 24V，直接驱动两线 / 三线变送器，简化现场接线；回路供电带故障监控、短路保护ABB
- 分组电气隔离8 通道整体与背板 ModuleBus 隔离，阻断地环路干扰，适合电厂、化工强干扰现场；隔离耐压 2.5kV AC
- 全通道回路诊断（NAMUR NE43 标准）自动检测：断线、短路、超量程、欠量程、变送器供电异常，故障信息上传控制器；支持自定义高低报警阈值ABB
- 冗余兼容支持 S800 I/O 冗余底座（TU847 等），一主一备无扰切换，关键工艺测点冗余采集
三、关键电气技术参数
表格
| 项目 | 参数 |
|---|---|
| 输入信号 | 4–20mA / 0–20mA 单端电流 |
| A/D 分辨率 | 12bit |
| 输入阻抗 | 配 TY801 分流端子 = 250Ω |
| 基本精度 | ≤±0.1%FS |
| 温度漂移 | 最大 50 ppm/℃ |
| 硬件滤波上升时间 | 190ms（可软件调整） |
| 模块更新周期 | 典型 10ms |
| 单通道限流 | 保护变送器，防止短路烧毁 |
| 最大现场线缆长度 | 600m |
| 模块供电 | 背板 24VDC（ModuleBus） |
| 功耗 | 约 1.5W |
| 超量程范围 | 4–20mA：+15%；0–20mA：+12% |
四、机械与环境规格
- 尺寸：宽 45mm × 高 119mm × 深 111mm（含连接器）
- 重量：150g
- 防护：IP20（控制柜内安装）
- 工作温度：-25℃ ~ +70℃
- 存储温度：-40℃ ~ +85℃
- 抗电磁干扰：50/60Hz >40dB 抑制
五、配套底座与端子
- 标准底座：TU810、TU814、TU847（冗余底座）
- 分流配件：TY801 分流棒，实现 250Ω 标准电流采集阻抗
- 接线端子：螺钉式端子，支持屏蔽双绞线，屏蔽单端接地
六、典型应用场景
- 火电 / 化工 / 石化安全联锁回路（SIL3 测点）
- 压力、差压、液位、温度 HART 智能变送器采集
- 机组振动、轴位移、转速等仪表 4–20mA 信号接入
- 大型压缩机、汽轮机、锅炉 DCS 监控系统
- 需要冗余 I/O、强抗干扰、设备资产管理（HART）项目
七、与同系列 AI880 区别
- AI880：无 HART、无 SIL3 认证，普通过程采集
- AI880A：带 HART 透传、SIL3 安全认证、完整回路诊断，安全回路专用高性能版本
八、安装使用要点
- 两线变送器直接接通道端子，模块提供回路 24V 供电，无需现场另配电源
- 长线缆必须使用屏蔽电缆，屏蔽层仅在控制柜侧单端接地，消除地环路漂移
- 如需冗余采集，成对插在 TU847 冗余底座，控制器组态 I/O 冗余模式
- 支持热插拔，但建议断电更换避免总线冲击；改造替换 AI810 非隔离卡时需重新接地与组态适配
- 回路故障可在控制器上位机直接读取断线 / 短路报警，无需额外编程判断
ABB AI880A high integrity analog input module (S800 I/O)
1、 Basic Information
Complete Material Number: 3BSE039293R1
Series: ABB S800 I/O, equipped with AC800M DCS controller
Positioning: SIL3 safety level, with HART, group isolation, supporting redundant high-performance analog input cards, used for process safety circuits, vibration/temperature/pressure transmitter acquisition ABB
Channel: 8 single ended current inputs (4-20mA/0-20mA)
2、 Core functional highlights
Safety Certification
IEC 61508 SIL3、EN 954-1 Cat.4， Can be used for unit interlocking and ESD safety circuits
HART transparent transmission
Supports HART smart transmitter, the controller can read device diagnosis, range, and fault information without the need for an additional HART adapter
Power supply for transmitter circuit
Each channel is equipped with a built-in current limiting external supply of 24V, which directly drives two-wire/three wire transmitters and simplifies on-site wiring; Circuit power supply with fault monitoring and short-circuit protection ABB
Group electrical isolation
The 8-channel system is isolated from the backplane Module Bus to block ground loop interference, making it suitable for strong interference sites in power plants and chemical industries; Isolation withstand voltage 2.5kV AC
Full channel circuit diagnosis (NAMUR NE43 standard)
Automatic detection: wire breakage, short circuit, over range, under range, abnormal transmitter power supply, fault information uploaded to the controller; Support custom high and low alarm threshold ABB
Redundancy compatibility
Support S800 I/O redundant base (TU847, etc.), one primary and one backup undisturbed switching, redundant acquisition of key process measurement points
3、 Key electrical technical parameters
table
Project parameters
Input signal 4-20mA/0-20mA single ended current
A/D resolution of 12 bits
Input impedance with TY801 shunt terminal=250 Ω
Basic accuracy ≤± 0.1% FS
Maximum temperature drift of 50 ppm/℃
Hardware filtering rise time 190ms (adjustable by software)
Typical module update cycle is 10ms
Single channel current limiting protection transmitter to prevent short circuit and burnout
Maximum on-site cable length of 600m
Module power supply backplane 24VDC (ModulaBus)
Power consumption is about 1.5W
Exceeding the range of 4-20mA:+15%; 0–20mA：+12%
4、 Mechanical and Environmental Specifications
Dimensions: 45mm wide, 119mm high, 111mm deep (including connectors)
Weight: 150g
Protection: IP20 (installed inside the control cabinet)
Working temperature: -25 ℃~+70 ℃
Storage temperature: -40 ℃~+85 ℃
Anti electromagnetic interference: 50/60Hz>40dB suppression
5、 Supporting base and terminals
Standard base: TU810, TU814, TU847 (redundant base)
Diversion accessory: TY801 diversion rod, achieving 250 Ω standard current acquisition impedance
Terminal block: screw type terminal, supports shielded twisted pair, shielded single ended grounding
6、 Typical application scenarios
Thermal power/chemical/petrochemical safety interlock circuit (SIL3 measuring point)
Collection of pressure, differential pressure, liquid level, and temperature using HART intelligent transmitters
4-20mA signal access for instruments such as unit vibration, shaft displacement, and speed
DCS monitoring system for large compressors, steam turbines, and boilers
Requires redundant I/O, strong anti-interference, and device asset management (HART) projects
7、 Difference from AI880 in the same series
AI880: No HART, no SIL3 certification, ordinary process acquisition
AI880A: Equipped with HART transparent transmission, SIL3 safety certification, complete circuit diagnosis, and high-performance version dedicated to safety circuits
8、 Key points for installation and use
The two-wire transmitter is directly connected to the channel terminal, and the module provides a 24V power supply for the circuit, without the need for an additional power supply on site
Long cables must use shielded cables, and the shielding layer is only grounded at one end on the control cabinet side to eliminate ground loop drift
If redundant acquisition is required, plug it in pairs into the TU847 redundant base, and configure the controller with I/O redundancy mode
Supports hot plugging, but it is recommended to ｒｅｐｌａｃｅ it after power off to avoid bus impact; Re grounding and configuration adaptation are required when replacing the AI810 non isolation card during renovation
Circuit faults can be directly read as broken/short circuit alarms on the controller's upper computer, without the need for additional programming to determine
