Description
Emerson KJ4020X1‑BD1
Technical Specifications: Input voltage 24VDC. Maximum input current 20A. Operating temperature ‑40°C ~ +70°C. Branch protection current per slot 3A.
Functional Features: Independent overcurrent protection for each I/O slot. Isolate short circuit fault of single channel. Real‑time branch current monitoring. Hot‑swap support. LED indicator for each branch fault status.
Application Scenarios: Chemical continuous production control racks, oil & gas station DCS cabinets, pharmaceutical batch control systems, paper mill process control.
Performance Parameters: Branch protection response time less than 8ms. Voltage drop less than 0.2V under rated load. MTBF 480000 hours.
Material Composition: FR‑4 flame retardant PCB. UL94‑V0 plastic housing. Gold‑plated copper terminals, solid‑state protection components, current sampling chips.
Structural Features: Rack plug‑in structure, matching DeltaV backplane. Front panel with multi‑channel LED fault indicators. Internal independent power branch circuits for each slot.
Working Principle: The module receives 24VDC input from power supply module, then distributes power to each I/O slot through separate protected branches. When short circuit or overcurrent occurs on one slot, corresponding branch protection cuts off power of this single slot, other slots remain powered normally. The module sends fault signal to DeltaV controller.
Installation Requirements: Install on DeltaV I/O rack. Tighten front locking screw. Ensure correct wiring of power input terminals. Keep good ventilation.
Usage Notes: Do not exceed rated branch current. Do not bypass built‑in branch protection circuit. Prevent dust and moisture entering the module. Cut off power before wiring modification.
