TRICONEX DI3301S2是Tricon安全系统16通道TMR三冗余24VDC数字输入模块，光电隔离设计，硬件三取二表决，适配Tricon CX/EX/RX系列安全机架。

TRICONEX DI3301S2 is a 16-channel TMR 24VDC digital input module for Tricon SIS, opto-isolated with 2oo3 voting, compatible with Tricon CX/EX/RX safety racks.

模块具备SIL3安全等级，支持热插拔与通道故障自检，通过TriBus总线与主CPU通讯，采集现场开关触点信号，是ESD、火气联锁系统高可靠DI备件。

It is SIL3 certified, hot-swappable with built-in channel diagnostics, communicates with main CPU over TriBus, collects discrete contact signals as high-reliability DI spare for ESD and F&G interlock systems.

Main Specifications 技术参数

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

• 2. Part Numbers / 型号编码：DI3301S2

• 3. Function Type / 类型：16-Point TMR 24VDC Digital Input Module 三冗余DI卡

• 4. Key Features / 特性：TMR 2oo3 voting, opto-isolated, hot-swap, SIL3, channel self-test, TriBus

• 5. Compatibility / 配套：Tricon CX/EX/RX机架、外部端子板、TriStation组态软件

Core Functions 核心功能

• 1. 采集24VDC现场开关量信号，包含急停触点、限位开关、火焰及气体探测器状态。
  Acquire 24VDC discrete signals from ESD contacts, limit switches, flame and gas detectors.

• 2. 三冗余通道独立采样，内部2oo3表决，单点通道故障不会造成信号误判。
  Independent sampling on three redundant slices, 2oo3 voting to avoid false state from single channel fault.

• 3. 光电隔离隔离现场侧与背板总线，抑制浪涌和共模干扰，提升系统稳定性。
  Opto-isolation separates field circuit and backplane bus to suppress surge and common-mode interference.

• 4. 在线通道自检，识别开路、断线故障，实时上传诊断信息给TriStation。
  On-line channel self-test detects open-wire faults and uploads diagnostic information to TriStation.

• 5. 支持不停机热插拔更换，不影响其他联锁回路运行，降低装置维护风险。
  Hot-swap replacement without shutdown, no impact on other interlock loops and reduce maintenance risk.

Application Scenarios 应用场景

• 1. 炼油厂、天然气处理厂ESD紧急停车系统安全触点信号采集。
  Safe contact signal acquisition for ESD emergency shutdown systems in refineries and gas processing plants.

• 2. 化工F&G火气系统可燃气体、火焰探测器报警状态采集接入。
  Alarm status input for combustible gas and flame detectors in chemical F&G fire and gas systems.

• 3. 电厂透平、锅炉SIS联锁系统门开关、振动开关、急停信号采集。
  Input for door switches, vibration switches and ESD signals of turbine and boiler SIS in power plants.

• 4. 海外存量Tricon安全系统故障DI卡替换、项目备件备货。
  Spare replacement and stocking for failed DI modules on legacy Tricon SIS installed overseas.

• 5. 煤化工、空分装置安全系统技改，高安全等级点位信号采集扩容。
  SIS retrofit and signal expansion for high-safety points in coal chemical and air separation plants.

FAQ 常见问答

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