Westinghouse 5X00489G01 | Ovation DCS Power Supply with Diode Auctioneered Outputs

Description

Product Overview

Key Technical Specifications

Parameter​	Specification​
Input Voltage​	85–264 VAC (43–67 Hz) / 90–375 VDC (wide range for industrial compatibility)
Output Voltage​	24 V DC (adjustable 23.5–28.5 V DC; initial setting: 24.5 V ±1%)
Output Current​	10 A (240 W) or 20 A (480 W) per channel (configurable based on system需求)
Power Factor Correction​	>0.92 (active, reduces power consumption and harmonic distortion)
Output Ripple​	<50 mVpp (10 A module) / <100 mVpp (20 A module) (ensures clean power delivery)
Hold-Up Time​	>20 ms (maintains power during input fluctuations or failures)
Efficiency​	>90% (high efficiency reduces heat dissipation and extends equipment life)
Protection Features​	Overvoltage protection, overcurrent limiting, and fault diagnosis (prevents damage from power anomalies)
Operating Temperature​	–40°C to +70°C (IEC 60068-2 compliant, suitable for harsh industrial environments)
Storage Temperature​	–40°C to +85°C (withstanding extreme storage conditions)
Mounting​	Rack mount / DIN rail mount (flexible installation options for control cabinets)
Dimensions​	Approx. 250 mm × 150 mm × 40 mm (compact form factor for cabinet integration)
Weight​	Approx. 0.3 kg (lightweight for easy handling during maintenance)

WESTINGHOUSE 1C31204G01

Field Application & Problem Solved

1. Power Generation:
   • Provides redundant power to Ovation controllers managing turbine sequencing, boiler feedwater pumps, and emissions monitoring.
   • Dual-redundant configuration meets NERC CIP reliability standards​ for critical cyber assets, ensuring uninterrupted operation during grid disturbances.
2. Chemical/Petrochemical Processing:
   • Powers I/O modules reading flow transmitters, level sensors, and analytical instruments in batch reactors.
   • Isolated power channels prevent ground loops that corrupt 4–20 mA signals, ensuring accurate process control.
3. Water Treatment:
   • Runs 24/7 SCADA networks controlling clarifiers, UV disinfection, and chemical dosing pumps.
   • Wide operating temperature range (–40°C to +70°C) handles outdoor equipment shelters without climate control.

• Redundant Inputs: Supports separate main and auxiliary power supplies, eliminating single-point-of-failure risks.
• Diode Auctioneered Outputs: Ensures uninterrupted power delivery by automatically switching to the backup supply during input failures.
• High Efficiency: Reduces heat dissipation and power consumption, extending equipment lifespan and lowering operational costs.

Installation & Maintenance Pitfalls (Expert Tips)

1. Verify Input Voltage Compatibility:
   • Always check the input voltage range (85–264 VAC / 90–375 VDC) before connecting the module to the power source. Using an incompatible voltage can damage the module’s input rectifier or capacitors.
   • Example: A client once fried a power supply by connecting it to a 277 VAC circuit—always verify voltage with a multimeter first.
2. Ensure Proper Grounding:
   • Ground the module’s chassis to the cabinet’s earth ground using a dedicated ground wire. Poor grounding can lead to electromagnetic interference (EMI) and signal corruption.
   • Tip: Use a ground resistance tester to verify grounding effectiveness (target: <1 ohm).
3. Test Redundancy Configuration:
   • During commissioning, simulate a power supply failure (e.g., disconnect the main input) to ensure the module switches to the auxiliary supply without interrupting operation. This is critical for mission-critical applications like power plants.
   • Common Mistake: Skipping this step can result in unexpected downtime during a real power failure.
4. Monitor Output Voltage Regularly:
   • Use a precision multimeter to check the output voltage (24 V DC ±1%) monthly. If the voltage deviates beyond this range, recalibrate the module using Emerson’s calibration tool.
   • Case Study: A refinery avoided a process upset by detecting a 0.5 V DC deviation early, which indicated a failing capacitor in the power supply.
5. Handle Hot-Swapping Correctly:
   • The 5X00489G01 supports hot-swapping (replacing the module without shutting down the system), but always follow the correct procedure:
     1. Disconnect the power input.
     2. Wait 5 seconds (to allow the backplane to discharge).
     3. Remove the module from the chassis.
     4. Insert the new module and reconnect the power.
   • Warning: Skipping the 5-second wait can damage the backplane’s connector pins, leading to costly repairs.

     

     WESTINGHOUSE 1C31204G01

Technical Deep Dive & Overview

1. External Power Sources: Separate main and auxiliary power supplies (AC or DC) connected to the 5X00489G01.
2. Power Distribution Module (5X00489G01): Converts input power to stable 24 V DC and distributes it to Ovation components.
3. Ovation Components: Controllers, I/O modules, and field devices powered by the 5X00489G01.

• Input Stage: The module accepts wide-range AC or DC input and converts it to DC using a bridge rectifier.
• Power Factor Correction (PFC): An active PFC circuit improves efficiency by reducing harmonic distortion, ensuring compliance with international standards (e.g., IEC 61000-3-2).
• DC-DC Conversion: A switching regulator converts the rectified DC to 24 V DC, with adjustable output voltage (23.5–28.5 V DC) to accommodate different system requirements.
• Diode Auctioneering: Two diodes (one for main input, one for auxiliary input) automatically select the highest voltage source, ensuring uninterrupted power delivery.
• Output Stage: The 24 V DC output is distributed to Ovation components via terminal strips or DIN rail connectors. The module also includes overvoltage protection (crowbar circuits) and overcurrent limiting (per-channel fuses) to prevent damage from power anomalies.

• Redundancy: Eliminates single-point-of-failure risks, ensuring continuous operation during power supply failures.
• Flexibility: Supports both AC and DC inputs, making it compatible with a wide range of industrial power systems.
• Efficiency: High efficiency (>90%) reduces heat dissipation and power consumption, lowering operational costs.
• Hot-Swappable: Allows maintenance without shutting down the system, minimizing downtime in 24/7 operations.

Final Notes