描述
TRICONEX DI3301是英维思（Invensys）Triconex安全仪表系统中的数字输入模块（DI），专为高可靠性工业信号采集设计，适用于石化、电力、化工等需冗余容错的场景。以下是综合多来源技术文档及供应商信息的详细说明：
一、产品定位与核心功能
模块类型
-数字输入模块（DI）：负责采集现场开关量信号（如传感器、限位开关），支持安全联锁与过程控制。
核心功能
-三重冗余（TMR）架构：三个独立通道并行处理信号，通过硬件表决机制确保数据一致性，单点故障不影响系统运行；
-高隔离与抗干扰：每通道独立光电隔离（2500V AC），支持浪涌和瞬态保护；
-自诊断能力：实时监测通道状态，检测断线、短路等故障并触发报警。
二、关键技术参数
|项目|参数/功能|
|输入通道|16通道（部分版本标注32点，需确认配置）|
|输入类型|干接点或有源信号（DC 0–32V）|
|响应时间|<1ms|
|电源需求|24VDC（允许±10%波动）|
|隔离能力|每通道独立隔离（2500V AC）|
|环境条件|工作温度：-40°C至+70°C；存储温度：-55°C至+85°C|
|安全认证|SIL 3（IEC 61508）、IEC 61131-2|
三、典型应用场景
安全仪表系统（SIS）
-紧急停车（ESD）、火灾与气体检测（F&G）系统信号采集；
-高完整性保护系统（HIPS/HIPPS）中压力、温度开关监测。
工业过程控制
-发电厂设备状态反馈、化工厂阀门位置确认。
TRICONEX DI3301 is a digital input module(DI)in Invensys Triconex safety instrumentation system.It is specially designed for high-reliability industrial signal acquisition and is suitable for petrochemical,electrical,chemical and other scenarios that require redundancy and fault tolerance.The following is a detailed description of the comprehensive multi-source technical documents and supplier information:
1.Product positioning and core functions
Module Type
-Digital input module(DI):Responsible for collecting on-site switching signals(such as sensors,limit switches),supporting safety interlocking and process control.
Core functions
-Triple redundancy(TMR)architecture:three independent channels process signals in parallel,ensuring data consistency through hardware voting mechanism,and a single point of failure does not affect system operation;
-High isolation and anti-interference:independent photoelectric isolation per channel(2500V AC),supporting surge and transient protection;
-Self-diagnosis capability:monitor channel status in real time,detect faults such as disconnection,short circuit,etc.and trigger alarms.
2.Key technical parameters
|Project|Parameters/Functions|
|Input channel|16 channels(32 points are marked in some versions,and configuration needs to be confirmed)|
|Input Type|Dry Contact or Active Signal(DC 0–32V)|
|Response time|<1ms|
|Power requirements|24VDC(±10%fluctuation allowed)|
|Isolation capability|Independent isolation per channel(2500V AC)|
|Environmental Conditions|Operating Temperature:-40°C to+70°C;Storage Temperature:-55°C to+85°C|
|Safety certification|SIL 3(IEC 61508),IEC 61131-2|
3.Typical application scenarios
Safety Instrument System(SIS)
-Emergency parking(ESD),fire and gas detection(F&G)system signal acquisition;
-Monitoring of pressure and temperature switches in high integrity protection system(HIPS/HIPPS).
Industrial process control
-Power plant equipment status feedback and chemical plant valve position confirmation.
