Technical Specifications Backplane Power Consumption:280mA @5VDC Expansion Interface:High‑speed dedicated expansion bus port Maximum Expansion Distance:Up to 2000 meters Isolation Voltage:1500V RMS Operating Temperature:0℃～+60℃ Storage Temperature:-40℃～+85℃ Relative Humidity:5%‑95%, non‑condensing Certifications:CE, UL, cUL
Functional Features High‑speed backplane bus signal driving, long‑distance remote rack expansion, expansion communication fault diagnosis, front‑panel link‑activity‑fault LED indication, support multi‑level expansion chassis cascading.
Application Scenarios Large‑size Series 90‑70 distributed control system, multi‑cabinet decentralized layout, long‑distance field I/O expansion, legacy equipment spare replacement.
Performance Parameters High‑speed deterministic expansion bus transmission Remote link fault diagnostic capability Shock & vibration:Comply with IEC 60068
Structural Characteristics Standard Series 90‑70 plug‑in rack module Front‑panel multi‑group LED indicators for link, data activity and fault High‑speed expansion bus signal connector Backplane gold‑finger bus contact Internal enhanced bus signal driving circuit Mechanical locking latch
Working Principle Installed on Series 90‑70 main rack, module samples backplane bus data signal, enhances signal driving capacity and transmits to remote expansion racks through dedicated expansion cable. Matching receiver module on remote side recovers bus signal for remote I/O modules data interaction. Module monitors expansion link quality and feeds fault status back to system CPU.
Installation Requirements Insert module into suitable slot of Series 90‑70 main chassis. Complete cabinet protective grounding. Use official qualified expansion cable. Strictly follow maximum transmission distance limit. Power‑off rack before module swapping. Keep expansion cable away from high‑voltage power lines.
Usage Notes Pair with matched bus receiver module for remote rack. Inspect cable connection during periodic maintenance. Analyze LED status for communication fault. Forbid on‑site disassembly. Prevent corrosive gas and liquid splash.
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