Technical Specifications Channels:16 Output Type:Form A dry relay contact Per‑channel Rating:2A @120VAC / 2A @24VDC Isolation Voltage:1500V RMS Backplane Power Consumption:145mA @5VDC Operating Temperature:0℃～+60℃ Storage Temperature:-40℃～+85℃ Relative Humidity:5%-95%, non‑condensing Certifications:CE, UL, cUL
Functional Features Dry‑contact relay output, mixed AC‑DC load compatibility, per‑channel LED status, galvanic isolation, relay state feedback to CPU.
Application Scenarios Auxiliary loop control, alarm device driving, mixed‑voltage load control, RX3i system discrete output.
Performance Parameters Typical relay actuation time ≤10ms Single‑channel fault will not affect other channels Designed for intermittent industrial switching operation Shock & vibration:Comply with IEC 60068
Structural Characteristics Standard RX3i plug‑in rack module Front‑panel independent LED for each channel Front‑mount field wiring terminal block Backplane gold‑finger bus contact Internal relay array and isolation circuit Mechanical locking latch
Working Principle RX3i CPU transmits output commands via backplane bus. Internal drive circuit pulls in relay coils. Dry‑contact relays complete on‑off switching for external AC or DC loads. Physical isolation separates PLC low‑voltage logic circuit from field power circuit. LED reflects real‑time relay working status.
Installation Requirements Insert module into RX3i rack slot. Implement cabinet protective grounding. Distinguish NO/NC contact terminals for field wiring. Separate field power wiring from low‑voltage signal cables. Power‑off rack before module replacement, hot‑swap not supported. Operate within rated temperature and humidity range.
Usage Notes Must not exceed rated contact current and voltage. Install arc‑suppression components for inductive loads. Avoid high‑frequency frequent switching to extend relay service life. Check LED and terminal tightness regularly. Forbid on‑site disassembly. Avoid corrosive gas and liquid splash.
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