Description
METSO S420154
Technical Specifications: Support multiple standard module card slots; rated operating voltage 24 VDC; maximum load current matching system rack requirement; operating temperature range ‑20 ℃ to +60 ℃; built‑in bus signal matching circuit; gold‑plated slot contacts; protection class IP20.
Functional Features: Provide installation slots for each functional module inside rack; distribute 24 VDC working power supply to each plug‑in unit; realize high‑speed inter‑module bus signal routing; built‑in signal impedance matching circuit; mechanical positioning for each module; provide dedicated grounding bus bar for whole rack.
Application Scenarios: Main control rack cabinet of pulp and paper mill Damatic XD system; main controller cabinet of thermal power plant auxiliary control system; chemical plant Damatic XD DCS cabinet; mineral processing automation control cabinet.
Performance Parameters: Low contact resistance of gold‑plated slot contacts; stable power distribution under full‑load condition; low signal attenuation during bus transmission; excellent anti‑interference performance; adapt to long‑term continuous operation in industrial cabinet environment.
Material Composition: Thickened fiberglass epoxy substrate; high‑quality gold‑plated female slot terminals; copper‑based power conducting circuit; metal fixing support; dedicated grounding copper bar.
Structural Features: Integrated rectangular rack‑type base board; multiple parallel module card slots arranged on front side; power supply bus and signal bus laid on different layers inside substrate; reserved fixing hole positions for cabinet installation; independent grounding bus bar runs through whole backplane.
Working Principle: System power module transmits 24 VDC power to S420154 backplane. Backplane internal circuit distributes power to each inserted functional module. All modules transmit and receive data through bus traces on backplane substrate. Impedance matching circuit guarantees signal integrity of high‑speed bus communication. Grounding bus bar unifies ground potential for all modules in rack.
Installation Requirements: Fix S420154 backplane steadily inside standard industrial control cabinet. Ensure all screw fasteners are tightened. Connect system power supply wiring strictly follow specification. Connect backplane grounding bus bar to cabinet protective grounding point reliably. Do not bend or deform backplane board during installation.
Precautions for Use: Cut off total power supply of rack before installing or replacing backplane. Prevent metal fragments falling into card slots. Do not scratch gold‑plated contact terminals of slots. Inspect power wiring terminals periodically to avoid poor contact caused by thermal loosening. Keep rack internal environment clean without conductive dust accumulation.
