Products Description
ICS TRIPLEX PP49283-8 Speed Monitor FTA

Technical Specifications
Model:PP49283-8
Brand:ICS TRIPLEX
Product type:Speed monitor input FTA field terminal assembly
System series:Trusted T8000 SIS
Bus type:Triple redundant parallel backplane bus
Compatible modules:Trusted speed monitor processor,backplane base units,redundant power supply modules
Redundancy:TMR triple modular redundant hot swap architecture
Power bus:5V DC,24V DC power supply
Operating temperature:0~+60℃
Relative humidity:5~95% non-condensing
Weight:3.92kg
Certification:CE,TÜV,SIL3
System compatibility
This FTA hardware belongs to ICS TRIPLEX Trusted SIS safety instrumented system and is installed inside Trusted rack cabinet. It receives pulse signals from field tachometer speed sensors,conditions and filters speed feedback signals then transmits validated pulse data to TMR processor module for overspeed or underspeed safety protection. It communicates with system engineering workstation,widely deployed in oil & gas,petrochemical and chemical plants for turbine and compressor overspeed safety interlock protection.
Function
PP49283-8 serves as the field signal conditioning terminal unit of Trusted TMR speed monitoring system. It acquires pulse signals from speed pickups,performs signal shaping,surge suppression and signal isolation. It continuously runs per-channel self-diagnosis to detect open circuit,short circuit and input wiring fault in real time.
Installation
Mount the FTA vertically into dedicated I/O slot of Trusted SIS rack. Complete field speed transducer wiring and backplane bus connection,verify pulse signal acquisition and fault diagnosis via Trusted Workbench engineering software.
Interface
‑Gold finger connector for triple redundant backplane bus communication
‑Field terminal block for tachometer speed sensor connection
‑Onboard pulse signal conditioning and surge protection circuit
‑LED indicators for channel running,alarm and fault prompt
Circuit feature
Conformal coated multi-layer PCB design,built-in surge and overvoltage protection circuit. Signal isolation and noise filtering design,fully compliant with SIL3 functional safety hardware specifications.
Feature
PP49283-8 is a spare speed monitor FTA terminal board for ICS TRIPLEX Trusted SIS system. Common faults include signal conditioning circuit damage,noise filter component failure and field sensor wiring fault. Confirm rack slot definition and firmware compatibility before replacement.
Diagnostic
When channel open circuit,short circuit or signal loss is detected,the module will trigger fault alarm and upload diagnostic messages to safety workstation.

Built‑in function
Field tachometer pulse signal conditioning and channel hardware self-diagnosis for Trusted TMR safety rack,used as SIS speed monitor FTA spare replacement.
Product Brief
PP49283-8 is ICS TRIPLEX Trusted SIL3 speed monitor input FTA,supporting TMR triple modular redundant architecture. Verify rack compatibility before ordering. ESD anti-static protection must be followed during handling installation.