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:140mA @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, wide load voltage compatibility, per‑channel LED status indication, galvanic isolation, contact state feedback to CPU.
Application Scenarios Mixed AC‑DC load control, auxiliary contact driving, alarm horn control, old‑site retrofit, general industrial discrete output.
Performance Parameters Typical relay actuation time ≤10ms Single‑channel fault will not influence other channels Designed for long‑term intermittent industrial operation Shock & vibration:Comply with IEC 60068
Structural Characteristics Standard plug‑in module for Series 90‑30 rack 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 CPU sends output commands via backplane bus. Internal drive circuit pulls in corresponding relay coils. Dry‑contact relays switch on‑off to control external field loads. Physical isolation separates PLC low‑voltage logic circuit from field power circuit. LED lamps reflect real‑time relay status.
Installation Requirements Insert module into valid rack slot. Complete rack protective grounding. Distinguish NO/NC contact terminals during field wiring. Separate field power wiring from low‑voltage signal cables. Power‑off rack before module replacement, hot‑swap not supported. Keep ambient environment without condensation.
Usage Notes Do not exceed rated contact current and voltage. Add external arc‑suppression components for inductive loads. Avoid frequent high‑frequency switching to extend relay service life. Regularly check LED status and terminal tightness. Forbid on‑site disassembly. Keep away from corrosive gas and liquid splash.
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