TRICONEX PLM3900N是经典Tricon平台的优先级逻辑模块（PLM），属于独立TMR安全解算单元，不依赖主处理器即可执行本地硬跳闸逻辑，作为ESD、BMS的最后一道安全表决层。

TRICONEX PLM3900N is a priority logic module for legacy Tricon SIS. It is an independent TMR logic solver that runs local trip logic without relying on the main processor.

模块背板24VDC供电，三通道独立采集与表决，内置完整回路诊断，SIL3认证，支持硬接线输入信号直接驱动跳闸输出，保障主CPU故障或通讯中断时安全动作依然可靠。

Powered by 24 VDC backplane, it adopts triple independent channels and built-in diagnostics with SIL3 certification. Hardwired inputs drive trip outputs to guarantee safety action upon main CPU or communication failure.

Main Specifications 技术参数

• 1. Product Series / 产品系列：TRICONEX Classic Tricon SIS Safety System

• 2. Part Numbers / 型号编码：PLM3900N

• 3. Function Type / 类型：Priority Logic Module 优先级独立逻辑解算模块

• 4. Key Features / 特性：TMR 2oo3 voting, independent trip solver, SIL3, full channel diagnostics

• 5. Compatibility / 配套：Classic Tricon机架、DI/DO模块、TriStation组态软件

Core Functions 核心功能

• 1. 独立硬逻辑表决，主处理器离线或通讯中断时依然可以执行紧急跳闸。
  Independent hard logic voting; emergency trip works even when main CPU is offline or communication fails.

• 2. 接收DI通道开关信号，按预设优先级逻辑输出跳闸指令至电磁阀和继电器。
  Receive DI contact signals and send trip commands to solenoid valves and relays by priority rules.

• 3. 三通道同步采样与硬件三取二表决，单通道故障不引发误跳闸。
  Triple-channel sampling and hardware 2oo3 voting to avoid false trip caused by single channel fault.

• 4. 持续通道诊断，检测输入断线、短路、通道不一致故障并上报系统。
  Continuous channel diagnostics detect open wire, short circuit and channel mismatch faults.

• 5. 作为独立安全层，和主CPU逻辑并行，提升SIF回路的故障容错能力。
  Works as an independent safety layer alongside main CPU logic to improve SIF fault tolerance.

Application Scenarios 应用场景

• 1. 油气炼化厂ESD紧急停车系统，关键关断阀独立硬跳闸保护回路。
  Independent hard trip loops for critical shutdown valves in oil & gas and refinery ESD systems.

• 2. 锅炉BMS燃烧管理系统，火焰、燃料切断高优先级安全联锁。
  High priority fuel trip and flame safety interlock for boiler burner management BMS systems.

• 3. 电厂汽轮机、压缩机SIS，超速、超压独立跳闸保护。
  Independent trip protection for turbine and compressor SIS on over-speed and over-pressure conditions.

• 4. 海外存量经典Tricon系统备件替换、高安全等级SIF回路改造。
  Spare replacement and high integrity SIF retrofit for legacy Tricon projects overseas.

• 5. 煤化工、空分高危工艺，增加独立硬解算层，降低共因失效风险。
  Add independent hard solver layer for coal chemical and air separation to reduce common cause failure risk.

FAQ 常见问答

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