System Overview
The ABB Bailey PHARPSCH100000 Power Supply Chassis is a core structural component of the Modular Power System III (MPS III), designed to house, distribute, and manage power supply modules within ABB Bailey Infi 90 distributed control systems. It serves as the physical and electrical backbone of the system’s power architecture, ensuring stable distribution of multiple DC voltage levels to control and I/O subsystems.
Engineered for industrial automation environments, this chassis supports redundant power configurations and modular plug-in trays, making it a critical element in high-availability process control systems where uptime and maintainability are essential.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | ABB (Bailey Controls) |
| Model | PHARPSCH100000 |
| Module Type | MPS III Power Supply Chassis |
| System Compatibility | ABB Bailey Infi 90 / Net 90 |
| Function | Power distribution + module housing |
| Supported Voltages | 5V DC, ±15V DC, 24V DC, 48V DC, 125V DC |
| Power Capacity | Up to ~1000–2000 W system dependent |
| Mounting Type | 19-inch rack-mounted chassis |
| Power Trays Support | Dual redundant power supply trays |
| Cooling System | Integrated fan / airflow monitoring |
| Operating Temperature | -20°C to +60°C |
| Dimensions (L×H×W) | 540 × 230 × 550 mm |
| Weight | Approx. 6.3 kg (varies by configuration) |
Functional Role in MPS III Architecture
The PHARPSCH100000 is not just a passive enclosure—it is an active power distribution platform. It integrates:
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Power entry and distribution bus
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Slots for redundant power supply modules
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DC bus monitoring and status signaling
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Cooling fan assemblies and airflow management
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Cable and terminal organization for multi-voltage rails
This design ensures stable delivery of system power to ABB control modules while supporting hot-swappable maintenance strategies that reduce downtime in industrial environments.
Industrial Applications
The chassis is widely used in mission-critical automation systems, including:
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Power generation and grid control stations
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Oil & gas upstream and refining facilities
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Petrochemical and chemical processing plants
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Water treatment and utility infrastructure
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Large-scale legacy DCS modernization projects
Its modular design makes it especially valuable in environments requiring scalable and maintainable control system architecture.
Engineering Advantages
The PHARPSCH100000 delivers strong system-level benefits beyond basic power distribution:
Modular Expandability
Supports multiple power trays, allowing flexible scaling based on system load requirements.
High System Reliability
Redundant tray configuration ensures continuous operation even during maintenance or module replacement.
Integrated Monitoring
Provides status feedback for power health and thermal conditions, improving preventive maintenance capability.
Service-Friendly Design
Power modules can be replaced without fully shutting down the system in supported configurations, reducing operational downtime.
Multi-Voltage Distribution Backbone
Supports several DC rails used by ABB Bailey control and I/O systems, reducing the need for separate power supplies.
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