Description
Yokogawa PW484‑50 S1
Technical Specifications: Input power 24 VDC ±10 %, maximum input current 5.5 A; output 5.1 VDC maximum 7.8 A; output 24 VDC maximum 1.7 A; functional‑safety compliance for ProSafe‑RS SIS platform; operating temperature 0 °C‑60 °C; storage temperature ‑20 °C‑70 °C; relative humidity 10‑90 %RH non‑condensing; ProSafe‑RS rack‑slot mounting; weight 1.35 kg; LED indicators for input power presence, output‑good and internal fault status; built‑in over‑current, over‑voltage and over‑temperature hardware protection circuits.
Functional Features: Converts industrial 24 VDC auxiliary power into multi‑rail regulated DC power for entire ProSafe‑RS rack assembly; continuous hardware self‑diagnosis monitors input, output and internal thermal conditions; front‑panel LED array provides direct visual fault indication; automatic protection shutdown activates upon over‑current, over‑voltage or over‑temperature events; supports qualified hot‑swap operation within ProSafe‑RS rack; full hardware compatibility with all ProSafe‑RS CPU and I/O modules; S1 hardware revision optimizes component stability for DC‑input field operating conditions.
Application Scenarios: Chemical plant SIS cabinets supplied by 24 VDC UPS backup power; offshore platform safety control racks with DC‑based power infrastructure; refinery emergency shutdown system cabinets; industrial plants with DC‑centric power distribution architecture; ProSafe‑RS system maintenance and spare‑part replacement projects.
Performance Parameters: SIL‑3 capable when deployed within validated ProSafe‑RS system architecture; stable power‑conversion performance across partial‑load to full‑load operating range; vibration and shock indicators satisfy process‑industry cabinet‑mount hardware requirements; supports 24‑7 continuous long‑term operation in industrial control cabinets.
Material Composition: Orange V0 flame‑retardant engineering‑plastic rack‑module housing; FR‑4 multilayer glass‑fiber power‑grade printed‑circuit board; DC‑DC isolation power conversion semiconductors; gold‑plated backplane edge‑connector contacts; multi‑color SMD LED status indicators; metal mechanical locking latches.
Structural Features: Standard ProSafe‑RS rack‑slot mechanical dimension; rear‑side gold‑plated edge‑connector interfaces with main‑rack backplane bus; front‑panel status‑LED group displays power‑supply operating status; side metal latches lock module firmly into rack power‑supply slot; housing ventilation slots implement passive convection heat dissipation.
Working Principle: External 24 VDC input power feeds through ProSafe‑RS rack backplane into PW484‑50 S1 internal DC‑DC converter circuits. Isolated DC‑DC topology generates regulated 5.1 VDC and 24 VDC output rails. Stabilized output power distributes via rack backplane to all other rack‑resident functional modules. Onboard monitoring circuits sample input voltage, output current and internal temperature parameters continuously. When fault thresholds exceed defined limits, hardware protection circuit cuts off DC output and triggers corresponding fault‑status LED indicator.
Installation Requirements: Insert PW484‑50 S1 into designated power‑supply slot of ProSafe‑RS main rack; secure main rack onto cabinet mounting base or DIN‑rail; keep ventilation slots unobstructed for heat dissipation; connect 24 VDC input power source strictly following official wiring specifications; implement reliable protective grounding for control cabinet and rack assembly.
Usage Notes: Follow official hot‑swap operation procedures when replacing module on powered‑on rack; maintain input DC voltage strictly within 24 VDC ±10 % operating window; this module works exclusively inside ProSafe‑RS rack assembly and cannot serve as standalone DC‑DC power unit; avoid environments with corrosive gas, liquid splash or condensation; inspect backplane contact condition during routine system maintenance.
