Module Type Introduction
UAC389AE02 HIEE300888R0002 is the universal analog signal processing core of UNITROL excitation cabinet, equipped with 8 independent hardware channels, each channel can be flexibly configured as analog input AI or analog output AO via system software without hardware modification. As an all-in-one signal interface, it completes synchronous sampling of generator PT secondary voltage, CT secondary current, stator winding temperature and bearing temperature, and outputs 4~20mA regulating commands to the excitation rectifier bridge and auxiliary cooling fan actuators. Each channel and backplane adopt independent isolation circuit to eliminate ground loop surge and strong electromagnetic interference from power plant high-power equipment. Built-in high-precision ADC/DAC conversion circuit and complete fault self-diagnosis logic, it is versatile replacement spare part for thermal, hydro and gas power unit excitation cabinets, which can cover both signal acquisition and closed-loop regulation demands.UAC389AE02 HIEE300888R0002 是 UNITROL 励磁柜通用模拟信号处理核心，搭载 8 路独立硬件通道，每一路均可通过系统软件自由组态为模拟输入 AI 或模拟输出 AO，无需改动硬件。作为一体化信号接口单元，同步完成发电机 PT 二次电压、CT 二次电流、定子绕组温度、轴承温度采集，同时输出 4~20mA 调节给定至励磁整流桥、冷却风机执行机构；单通道与背板独立隔离回路，消除电厂大功率设备带来的地环路浪涌、强电磁干扰；板载高精度 ADC/DAC 转换芯片与完整故障自诊断逻辑，可同时兼顾信号采集与闭环调节需求，是火电、水电、燃气机组励磁柜多功能替换备件。
Core Functions
- 8 multi-purpose flexible channels, software switchable AI/AO mode, adapt to diverse excitation signal collection and regulation demands
- 8 路多功能复用通道，软件切换 AI/AO 模式，适配励磁系统多样化信号采集与调节需求
- Dual signal compatibility, support 4~20mA DC standard industrial analog signals for both input and output
- 双向兼容 4~20mA 直流标准工业模拟信号，输入、输出通用
- Independent galvanic isolation per channel, withstand 2500VAC isolation voltage between field side and control backplane
- 单通道独立电气隔离，现场侧与控制背板 2500VAC 工频耐压隔离
- High precision conversion circuit, ±0.1%FS full scale accuracy, low temperature drift to reduce regular calibration
- 高精度转换回路，满量程采集 / 输出精度 ±0.1% FS，低温温漂控制，减少现场校准频次
- Full-loop hardware self-diagnosis, auto detect sensor open circuit, short circuit, over-range and backplane power failure
- 全回路硬件自诊断，自动识别传感器断线、短路、信号超量程、背板供电故障
- VME high-speed backplane bidirectional communication, upload sampling data & fault codes and receive control setpoints from main CPU
- VME 背板高速双向通讯，向上主控上传采集数据、故障代码，接收调节给定指令
- Hot-swap supported, ｒｅｐｌａｃｅ faulty module without shutting down the whole excitation control system
- 支持机架在线热插拔，更换故障板卡无需整套励磁系统停机
- Multi-point temperature signal conditioning, direct match PT100 stator temperature probes without extra signal conditioning cards
- 多路温度信号调理，直接适配 PT100 定子温度探头，无需额外信号调理卡
Electrical Specifications
Backplane Power Supply: 24VDC rack backplane power, typical power consumption 11W背板供电：24VDC 机架背板供电，整机典型功耗 11WAnalog Input Range: 4~20mA DC differential signal模拟输入量程：4~20mA DC 差分信号Analog Output Spec: 4~20mA sourcing output, max load 500Ω per channel模拟输出规格：4~20mA 源型输出，单通道最大负载 500ΩConversion Resolution: 12-bit high precision ADC/DAC转换分辨率：12 位高精度数模 / 模数转换芯片Isolation Withstand Voltage: 2500VAC between each channel and backplane通道隔离耐压：单通道对背板 2500VAC 工频耐压Hardware Protection: Multi-stage protection against signal short circuit, overcurrent, reverse polarity, surge and ESD硬件防护：信号短路、过流、极性反接、浪涌、静电 ESD 多级隔离保护Data Refresh Cycle: ≤10ms full 8-channel synchronous data refresh数据刷新周期：8 通道同步刷新周期≤10ms
Mechanical & Environmental Data
Overall Dimensions: 320 × 36 × 165mm整机尺寸：320 × 36 × 165mmTotal Weight: Approx 0.47kg整机重量：约 0.47kgProtection Class: IP20, only installed inside indoor control cabinet防护等级：IP20，仅限室内控制柜安装Operating Temperature: -20℃ ~ +60℃工作温度：-20℃ ~ +60℃Storage Temperature: -40℃ ~ +85℃存储温度：-40℃ ~ +85℃Relative Humidity: 5%~95% RH non-condensing相对湿度：5%~95% RH 无冷凝PCB Process: Full conformal coated PCB, anti-dust, anti-vibration and anti-strong EMC interference for power plant environmentPCB 工艺：全板三防涂层，防尘、抗震，适配电厂大功率设备强电磁工况Certifications: CE, UL, IEC61850, IEC61131 power excitation control equipment standards认证资质：CE、UL、IEC61850、IEC61131 电力励磁控制设备行业标准
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