Emerson 1X00797H01L

Technical Specifications:

• Manufacturer: Emerson
• Part Number: 1X00797H01L
• Input Voltage Range: 85‑264 VAC or 12‑28 VDC dual‑input support
• Output Voltage: 24‑28 VDC adjustable, regulated
• Rated Output Current: 20 A
• Rated Output Power: 480 W
• Conversion Efficiency: 94% typical
• Cooling Mode: Natural convection enhanced heat‑dissipation
• Operating Temperature: ‑20 °C ~ +60 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Relative Humidity: 5‑95% RH non‑condensing
• Mounting: 35 mm standard DIN rail
• Weight: 1600 g

Functional Features:

• Over‑voltage, over‑current, short‑circuit, over‑temperature multi‑protection
• Active current‑sharing function for redundant parallel configuration
• Front‑panel DC‑OK, overload fault LED indicator
• Wide‑range universal AC input, adapt to different regional industrial power‑grid
• Low‑noise low‑ripple output, suitable for DCS sensitive signal equipment
• Cabinet‑optimized mechanical size for Ovation control cabinet layout

Application Scenarios:

• Large‑scale Ovation DCS heavy‑load cabinet main power‑supply
• Power‑plant unit control cabinet centralized 24 VDC power supply
• Petrochemical large I/O quantity distributed control cabinet
• Critical process automation system redundant power‑supply configuration

Performance Parameters:

• Output ripple noise: ≤150 mV peak‑to‑peak
• Voltage stability accuracy: ±1.5%
• Current‑sharing deviation for parallel operation: ≤5%
• MTBF: 260 000 hours

Material Composition:

• Housing: Flame‑retardant reinforced engineering plastic
• Main circuit substrate: Thick‑copper industrial‑grade FR‑4 PCB
• Power‑semiconductor: High‑current power switching device
• Terminal: High‑current copper alloy screw terminal block

Structural Characteristics:

• DIN‑rail clip‑on installation structure
• Large‑area internal metal heat‑sink for heat dissipation
• Front‑panel status indicator window
• Separate input‑output terminal area for electrical safety isolation

Working Principle: Input AC‑or‑DC power is processed by EMI filtering, rectification, high‑frequency isolated switching conversion. Output stable high‑current 24 VDC power. Built‑in current‑sharing control circuit implements load‑balance distribution when multiple modules work in parallel, multi‑protection circuit monitors power‑supply operating state in real‑time.

Installation Requirements:

• Install on standard 35 mm DIN‑rail inside well‑ventilated control cabinet
• Maintain sufficient clearance around module for heat dissipation
• Input‑output wiring must match rated current‑carrying specification
• Complete protective‑earth connection for power‑supply housing
• When applying redundant parallel‑operation, strictly follow official wiring specification