Technical Specifications Input Voltage:24VDC nominal, range 18‑30VDC Output Power:140W Backplane Output:5VDC Maximum Backplane Output Current:28A Isolation Voltage:1500V RMS Operating Temperature:0℃～+60℃ Storage Temperature:-40℃～+85℃ Relative Humidity:5%‑95%, non‑condensing Certifications:CE, UL, cUL
Functional Features B‑updated hardware circuit, 140W high‑power DC‑DC conversion, wide DC input tolerance, complete electrical protection functions, LED power‑fault status display, high‑current backplane power feeding.
Application Scenarios Heavy‑load RX3i main rack, dense I/O control cabinet, spare replacement for original B‑version power unit, DC‑fed large‑scale automation system.
Performance Parameters High‑efficiency high‑current power conversion Rapid fault protection response Shock & vibration:Comply with IEC 60068
Structural Characteristics Standard RX3i plug‑in rack module Front‑panel LED indicators for power good and fault Heavy‑load DC input terminal block Backplane gold‑finger bus contact Internal B‑revision high‑power DC‑DC power assembly Mechanical locking latch
Working Principle Working mechanism is consistent with IC695PSD140A. External 24VDC power goes through internal DC‑DC isolation and regulation circuit, delivers high‑current 5VDC power to chassis backplane. B‑revision optimizes internal component parameters. Protection circuit triggers output cut‑off under abnormal electrical conditions.
Installation Requirements Install into dedicated high‑power power slot of RX3i chassis. Implement cabinet protective grounding. Avoid DC input reverse polarity connection. Total rack module power consumption shall not exceed 140W rating. Disconnect DC power supply before module swapping. Ensure cabinet heat‑dissipation performance.
Usage Notes Input DC wiring shall adopt suitable wire gauge for high‑current loop. Do not overload backplane output. Check LED indicators during routine maintenance. On‑site disassembly is prohibited. Prevent corrosive gas and liquid splash.
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