GE IC693PWR322
GE IC693PWR322 - Image 2

GE IC693PWR322

  • Product Introduction: This is a critical power supply module designed specifically for the GE Fanuc Series 90-30 PLC platform. It is a 25VDC regulated power supply that connects directly to the PLC backplane bus, providing the necessary operating voltage to all other I/O modules, CPUs, and communication cards in the rack. Unlike standalone power supplies, this module is bus-powered and eliminates the need for an external 24VDC power supply in many configurations. It is the backbone power source for the entire 90-30 system, ensuring stable and clean power delivery to sensitive logic circuits. It is widely used in industrial automation, process control, and machine control applications where system uptime and power stability are paramount. The “322” suffix indicates a 2.5A current capacity variant with specific voltage regulation characteristics.
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Category: SKU: GE IC693PWR322

Description

GE IC693PWR322

  • Technical Specifications:
    • Output Voltage: 25VDC nominal (regulated)
    • Output Current: 2.5A maximum continuous (62.5W total power)
    • Input Voltage: 120VAC or 240VAC (selectable via jumper/switch)
    • Input Frequency: 47-63Hz
    • Voltage Regulation: ±1% over full load range
    • Ripple and Noise: Less than 150mV peak-to-peak
    • Turn-on Delay: Typically 50ms to reach full voltage
    • Efficiency: Approximately 65% at full load
    • Isolation: 1500V RMS between AC input and DC output
    • Protection: Overcurrent protection, overvoltage protection, short circuit protection
    • Operating Temperature: 0°C to 60°C (32°F to 140°F)
    • Storage Temperature: -40°C to 85°C
    • Dimensions: Standard IC693 module form factor (approx. 98mm x 165mm x 120mm)
    • Weight: Approximately 0.45 kg (1 lb)
  • Functional Features:
    • Backplane Powered: Supplies power to the entire backplane bus — no external 24VDC supply needed for logic power
    • Voltage Regulation: Tight ±1% regulation ensures stable operation of all connected modules
    • Redundancy Support: Can be paired with a second PWR322 for N+1 redundancy in critical applications
    • Power Good Indicator: Front-panel LED indicates when output voltage is within specification
    • Fail-Safe Design: If power fails, the module gracefully shuts down all connected I/O
    • Hot-Swap Capable: Can be replaced while the PLC is running (with redundancy configured)
    • Universal AC Input: Accepts both 120VAC and 240VAC without hardware changes
  • Application Scenarios:
    • Primary power source for GE 90-30 PLC racks in manufacturing plants
    • Process control systems in oil and gas refineries
    • Water treatment plant automation
    • Power generation monitoring systems
    • Chemical processing control panels
    • Any application requiring reliable 25VDC bus power for 90-30 PLCs
  • Performance Parameters:
    • Output Ripple: <150mV p-p at full load
    • Transient Response: Recovers from 50% load step in <10ms
    • MTBF: >100,000 hours at 25°C
    • Bus Current Delivery: Up to 2.5A shared across all backplane slots
    • Power Factor: >0.9 at full load
    • Inrush Current: <30A peak at turn-on (cold start)
  • Material Composition:
    • Housing: Flame-retardant polycarbonate/ABS blend, UL94 V-0 rated
    • PCB: 4-layer FR-4 glass epoxy with conformal coating
    • Connectors: Gold-plated backplane edge connector (100-pin style for 90-30)
    • Transformer: Toroidal iron core with copper windings, encapsulated in epoxy
    • Capacitors: Electrolytic capacitors rated for 105°C operation, long-life design
    • Isolation Barrier: Opto-isolators and reinforced insulation between AC and DC sides
  • Structural Features:
    • Standard IC693 half-width or full-width module form factor
    • Front-panel LED indicators: Power OK (green), Fault (red)
    • AC input terminal block on the side or rear
    • DC output via backplane connector only — no field wiring terminals
    • DIN-rail mounting brackets included
    • Cooling fins on the top surface for passive heat dissipation
  • Working Principle:
    • AC mains power (120/240VAC) enters the module and is rectified by a bridge rectifier. The DC is then filtered by bulk capacitors and fed into a high-frequency switching regulator (typically 50-100kHz). The regulator controls a MOSFET or IGBT switch to maintain a constant 25VDC output. An opto-isolated feedback loop monitors the output voltage and adjusts the duty cycle of the switch to maintain regulation. The 25VDC is delivered to the backplane bus, powering all connected modules. The power good circuit monitors output voltage and disables the backplane drive if voltage drops below 22VDC or exceeds 28VDC.
  • Installation Requirements:
    • Mount in IC693 or IC695 chassis (Series 90-30 compatible)
    • Connect AC mains to the input terminal block (L, N, G)
    • Ensure chassis ground is connected to building earth ground
    • Do not exceed 2.5A total bus current — calculate total module consumption
    • Maintain minimum 10mm spacing between modules for airflow
    • Use a dedicated circuit breaker (5A recommended) for the AC input
  • Usage Precautions:
    • Verify AC input voltage setting (120VAC vs 240VAC) before powering up — wrong setting will destroy the module
    • Do not exceed 2.5A total bus load — use an external 24VDC supply if more current is needed
    • Do not block the cooling fins — overheating will trigger thermal shutdown
    • Replace fuse (if present) with same rating only — do not bypass
    • Do not hot-swap without redundancy configured — system will lose power to all modules
    • Check Power Good LED before trusting system operation — if LED is off, do not run the PLC

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