Comprehensive Overview
The Allen Bradley 1746-P2 Power Supply Module is a high-performance unit designed specifically for the SLC 500 modular controller family. Built to provide reliable, regulated DC power to SLC processors, input/output (I/O) modules, and communication adapters, the 1746-P2 ensures continuous and stable operation in industrial automation environments.
This module features universal input compatibility and short-circuit protection, supporting both standard and extended chassis configurations. Engineered with industrial-grade durability and thermal management, it remains one of the most dependable power units for legacy control systems still in operation today.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen Bradley / Rockwell Automation |
| Series | SLC 500 |
| Module Type | Power Supply Module |
| Catalog Number | 1746-P2 |
| Input Voltage | 120/220V AC, 47–63 Hz |
| Input Current | 2.5 A @ 120V AC / 1.3 A @ 220V AC |
| Inrush Current | 20 A maximum |
| Output Voltage | 5V DC and 24V DC |
| Output Current (5V DC) | 8 A |
| Output Current (24V DC) | 2 A |
| Chassis Compatibility | 7-slot SLC 500 chassis and remote I/O racks |
| Protection Features | Overvoltage, short circuit, and thermal overload protection |
| Power Dissipation | 45 W typical |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Humidity | 5% to 95% non-condensing |
| Mounting Type | DIN rail or panel mounting |
| Dimensions (H × W × D) | 145 mm × 70 mm × 150 mm (5.7 in × 2.8 in × 5.9 in) |
| Weight | 0.9 kg (2.0 lb) |
| Certifications | UL, CSA, CE, and C-Tick |
Practical Applications
The 1746-P2 is a widely implemented component in manufacturing and process control systems requiring robust and consistent power delivery. Typical applications include:
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Packaging and Conveyor Systems – powering controllers for multi-motor coordination.
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Water Treatment Plants – maintaining continuous logic control and process feedback.
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Material Handling – ensuring stable I/O response for automation networks.
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Assembly Lines – driving logic processors and operator interfaces simultaneously.
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Energy and Utility Monitoring Systems – supporting redundant control infrastructure.
Its modular integration and protective design make it ideal for demanding industrial environments.
Advantages and Performance Benefits
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Dual Voltage Input Flexibility – automatically accommodates 120V or 220V AC without adjustment.
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Reliable Power Regulation – precise DC output for CPU and I/O stability.
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Advanced Protection – internal circuitry guards against overloads, voltage spikes, and heat buildup.
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Compact and Modular – easily mounts into standard 7-slot SLC chassis with minimal space requirements.
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Industrial Durability – designed to operate continuously under harsh ambient conditions.
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Maintenance-Friendly Design – LED status indicators simplify troubleshooting.
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Low Ripple Voltage – ensures consistent analog signal performance.
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Compatibility – works seamlessly with all SLC 500 processors including 1747-L541, L542, and L543.
Company Information
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Add: Alishan Building, 2 Lvling Rd, Siming District, Xiamen, Fujian, China, 361006
Our services
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