Advanced DC Power Support for Mission-Critical SLC 500 Automation Systems
The Allen Bradley 1746-P3 Power Supply Module is a high-efficiency DC-powered supply unit engineered for the SLC 500 platform. Designed to deliver stable backplane power in demanding industrial environments, this module supports processors, communication interfaces, and I/O modules with dependable voltage regulation and consistent operational performance.
Its DC input architecture makes it particularly suitable for applications utilizing centralized DC control power systems. With reliable output capacity and rugged industrial construction, the 1746-P3 helps maintain system continuity while supporting long-term automation reliability across a wide range of industrial sectors.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Allen Bradley |
| Model Number | 1746-P3 |
| Module Type | Power Supply Module |
| Product Series | SLC 500 |
| Input Voltage Range | 19.2–28.8 V DC |
| Nominal Input Voltage | 24 V DC |
| Input Current | Approx. 5 A Maximum |
| Input Power Capacity | Approx. 120 W |
| Backplane Output Voltage | 5 V DC |
| 5 V DC Backplane Current | 3.6 A |
| 24 V DC User Power Output | 0.87 A |
| Power Supply Efficiency | High-Efficiency DC Conversion Design |
| Isolation | Industrial Electrical Isolation |
| Power Loss | Approx. 18 W |
| Chassis Compatibility | SLC 500 Modular Chassis |
| Cooling Method | Passive Convection Cooling |
| Installation Type | Chassis Mounted |
| Operating Temperature | 0°C to +60°C |
Typical Applications
The 1746-P3 power supply module is widely deployed in industrial facilities where 24 V DC power infrastructure is preferred for automation control systems.
Common application areas include:
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Manufacturing automation systems
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Automotive production lines
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Material handling equipment
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Packaging and processing machinery
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Water and wastewater treatment facilities
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Industrial control panels
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Energy management systems
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Process automation installations
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Remote control stations
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OEM machine-building projects
Its DC-powered design is especially valuable in applications utilizing battery-backed systems and centralized DC distribution networks.
Key Operational Advantages
Optimized for 24 V DC Industrial Systems
Designed to integrate seamlessly into facilities that standardize on 24 V DC control power architectures.
High Backplane Current Capacity
Provides ample power for processors, communication modules, and multiple I/O modules within SLC 500 racks.
Reliable Voltage Regulation
Maintains stable system operation by delivering consistent backplane power under varying load conditions.
Industrial-Grade Durability
Built to support continuous operation in demanding automation environments where uptime is essential.
Efficient System Expansion Support
Allows flexible scaling of control systems without compromising power stability.
Reduced Maintenance Requirements
Passive cooling design helps minimize maintenance while supporting dependable long-term performance.
Seamless SLC 500 Compatibility
Engineered specifically for Allen Bradley SLC 500 chassis systems for simplified installation and integration.
Technical FAQs
1. What is the primary purpose of the 1746-P3 module?
It supplies regulated backplane power for Allen Bradley SLC 500 control systems.
2. What input voltage does the module require?
The module operates on 19.2–28.8 V DC input power.
3. What is the nominal operating voltage?
Its nominal input voltage is 24 V DC.
4. How much 5 V DC backplane current can it provide?
The module provides up to 3.6 A of backplane current.
5. Does it supply auxiliary 24 V DC power?
Yes, it provides approximately 0.87 A of user-side 24 V DC power.
6. Which PLC platform is it designed for?
It is specifically designed for the Allen Bradley SLC 500 series.
7. Is it suitable for battery-backed systems?
Yes, its DC input design supports integration with many industrial DC power architectures.
8. What cooling method does the module use?
It utilizes passive convection cooling without internal fans.
9. Can it support multiple installed modules?
Yes, it is designed to power processors, communication modules, and multiple I/O modules within supported chassis configurations.
10. What is the main benefit of the 1746-P3?
It delivers stable and efficient DC-powered operation for demanding industrial automation systems.
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