GE IS400STCIS2AFF

GE IS400STCIS2AFF（STCI）是Mark VIe涡轮控制系统热电偶专用端子板，和PSTCI I/O模块配套使用，承接现场K、S、B等类型热电偶信号，内置高精度冷端补偿电路，同时集成低通滤波与浪涌抑制，减少电厂强电磁干扰对测温精度的影响。

GE IS400STCIS2AFF (STCI) is a dedicated thermocouple terminal board for Mark VIe turbine control system. It pairs with PSTCI I/O pack and accepts K, S, B-type thermocouple signals. Onboard precision cold junction compensation, low-pass filtering and surge suppression maintain stable temperature readings under heavy plant EMI.

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板卡支持热电偶断线检测，单通道故障隔离，不影响其他测温通道运行，全板三防涂层，适配控制柜高温、粉尘工况。属于停产存量备件，多用于燃气轮机排气温度、燃烧室、轴承金属温度采集回路维保，是燃机热通道监测的前端信号板。

This board supports thermocouple open-wire detection with channel isolation, so one failed sensor will not disrupt other temperature points. Full conformal coating improves reliability in dusty and high-temperature cabinet environments. It is a discontinued spare widely used for gas turbine exhaust, combustor and bearing metal temperature monitoring loops.

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Main Specifications 技术参数

1. Product Series / 产品系列：GE Speedtronic Mark VI / Mark VIe Turbine Control System
2. Part Numbers / 型号编码：IS400STCIS2AFF (STCI Thermocouple Input Terminal Board)
3. Function Type / 类型：Thermocouple Signal Terminal Board 热电偶信号端子板
4. Key Features / 特性：Multi-type TC support, cold junction compensation, open detection, surge filter, conformal coating
5. Mounting / 安装：Mark VIe机架配套安装，必须与PSTCI I/O模块配对使用

Core Functions 核心功能

1. 现场热电偶信号端子转接，支持K、S、B等多种分度号热电偶接入。
Field termination for thermocouples, compatible with K, S, B and other standard TC types.
2. 集成冷端补偿，消除端子侧环境温度漂移，保障温度测量准确度。
Built-in cold junction compensation to offset ambient temperature drift at terminal points.
3. 浪涌吸收与噪声滤波，抑制电厂电磁干扰，保护后端PSTCI采集模块。
Surge and noise filtering protect PSTCI pack against electrical interference in power plants.
4. 热电偶断线诊断，识别传感器开路故障，报警信息上传ToolboxST。
Open-circuit detection for thermocouple loops and send fault alarms to ToolboxST software.
5. 兼容单工与TMR冗余架构，适配燃机保护回路高可靠配置方案。
Compatible with simplex and TMR redundant configurations for gas turbine protection loops.

Application Scenarios 应用场景

1. 联合循环电站燃机Mark VIe控制柜排气温度、燃烧室温度采集回路备件更换。
Spare replacement for exhaust and combustor temperature loops of gas turbine Mark VIe cabinets.
2. 汽机轴承金属、缸体多点温度监测，为超温保护、性能计算提供温度数据。
Bearing metal and casing temperature monitoring for overtemperature protection and performance calculation.
3. 存量GE涡轮控制系统改造升级，老化STCI热电偶端子板替换更新。
Retrofit of legacy GE turbine control systems and replacement of aging STCI terminal boards.
4. 海外电站EPC项目成套备件供货，搭配PSTCI I/O模块打包交付。
Complete spare parts supply for overseas power EPC projects, matched with PSTCI I/O packs.
5. 热电偶测温回路定期校验、故障排查，备用板快速恢复温度采集链路。
Used for TC loop calibration and troubleshooting, restore temperature measurement quickly as spare.

FAQ 常见问答

Q: Can IS400STCIS2AFF work without PSTCI I/O pack? / IS400STCIS2AFF可以脱离PSTCI模块单独采集热电偶信号吗？

A: No, it is only the termination and conditioning board, it must connect to PSTCI I/O pack for data conversion.
不可以，它仅为端子调理板，必须搭配PSTCI I/O模块完成信号数字化换算。

Q: Can it directly replace old revision IS400STCIS2AD? / 是否可以直接替换老版本IS400STCIS2AD？

A: Pinout and compensation parameters may differ, terminal wiring and software configuration need recheck before swap.
引脚定义与补偿参数存在差异，更换前需要重新核对接线和软件组态。