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The Honeywell 51198651-100 SPS5785 HPM Power Supply Module serves as a crucial component of the xPM power system, providing reliable and robust power for critical operations. Honeywell recommends using a redundant power supply configuration, with each power supply connected to a dedicated power source, to enhance system reliability and minimize the risk of power-related failures.
Key Features and Recommendations
Next-Generation Power Supply
Honeywell has introduced the latest generation of power supplies for the xPM system, offering improved robustness and addressing potential failure modes.
Redundant Configuration
For maximum reliability, the system should utilize a redundant power supply setup. However, special care must be taken when replacing a failed power supply to avoid:
- Environmental Disturbances: Changes can dislodge particles that may enter the airflow of the working power supply.
- Contamination Risks: Particles drawn into the airflow can cause the second power supply to fail.
Power Supply Replacement Guidelines
Scheduled Maintenance
Honeywell recommends replacing power supplies every ten years, ideally during scheduled downtime, to minimize disruptions. Following the procedure outlined in the Honeywell xPM Service Manual is essential for safe and effective replacement.
Replacement of Original Black Power Supplies
In October 1996, Honeywell issued a priority notification (PN #1986) regarding a potential over-voltage issue with black-colored power supplies (51109456-200) sold between 1988 and 1994.
- Honeywell strongly recommends replacing these older black power supplies with the current silver version (51198651-100) to prevent potential failures.
- This replacement is critical regardless of when the black power supplies were put into service.
Preventive Maintenance Tips
Common Issues
- Foreign Particles: Contamination from particles in the environment can compromise the power supply’s functionality.
- Whiskers: Even in clean environments, conductive whiskers can form and potentially short active circuits. Details on this issue can be found in the Customer Resource Manual (CRM), section PD22_G97(G).
Enhanced Design
The updated power supply, available through the power system maintenance kit, incorporates design improvements to mitigate these risks and ensure better reliability.
Proactive Measures
- Monitor Alarms: Regularly check power system alarms and take immediate action when they occur.
- Maintain Spares: Keeping spare power supplies on hand is essential to minimize downtime in case of failure.
- Follow Maintenance Procedures: Adhere strictly to Honeywell’s recommended maintenance guidelines for optimal system performance.
Product Specifications
| Feature | Details |
|---|---|
| Part Number | 51198651-100 |
| Model | SPS5785 HPM Power Supply |
| Recommended Lifespan | 10 years |
| Compatibility | xPM Power Systems |
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