Technical Specifications Backplane Power Consumption:250mA @5VDC Expansion Interface:Dedicated expansion bus receiving 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 Remote expansion bus signal receiving and restoration, bus signal conditioning, link fault diagnosis, front‑panel link‑fault LED indication, provides complete backplane bus signal for remote expansion chassis modules.
Application Scenarios Series 90‑70 remote expansion rack, distributed I/O cabinet, long‑distance automation control system, legacy equipment spare replacement.
Performance Parameters Stable bus signal recovery processing Remote link fault detection function Shock & vibration:Comply with IEC 60068
Structural Characteristics Standard Series 90‑70 plug‑in rack module Front‑panel LED indicators for link, activity and fault Expansion bus signal input connector Backplane gold‑finger bus contact Internal signal receiving and restoration circuit Mechanical locking latch
Working Principle IC697BEM721 is installed inside remote expansion chassis. It receives differential bus signal sent by main‑rack BEM transmitter module via expansion cable. Internal circuit shapes and restores original Series 90‑70 backplane bus signal, delivers signal to local remote‑rack backplane for I/O and communication modules data exchange. Module monitors link quality and reports communication fault condition.
Installation Requirements Install module into designated slot of Series 90‑70 remote expansion chassis. Complete remote cabinet protective grounding. Connect dedicated expansion cable coming from main‑rack transmitter module. Separate expansion cable from high‑voltage power cables. Maintain cabinet heat‑dissipation ventilation.
Usage Notes Do not exceed maximum expansion distance. Check cable connector tightness regularly. Judge communication failure by front‑panel LED indicators.
There are no reviews yet.