Allen-Bradley 1746-P4 Rack Power Module

Description

Allen-Bradley 1746-P4 Rack Power Module

Product Dimensions：

The Allen-Bradley 1746-P4 is a high-performance power supply module specifically designed for the SLC 500 modular hardware platform. It is a fundamental component used to provide stable DC power to the backplane, supporting the processor and various I/O modules.

1. Product Detailed Description

The 1746-P4 is a DC-input power supply. Unlike standard AC power supplies (like the P1 or P2), the P4 is engineered for industrial environments where a 24V DC power source is the primary supply. It mounts on the left side of any 1746 chassis and connects directly to the backplane to distribute power.

2. Technical Specifications

The 1746-P4 is designed for efficiency and robustness. Key electrical parameters include:

3. Product Advantages

• High Current Output: It offers the highest current capacity (10A at 5V) in the 1746 power supply family, making it ideal for large chassis packed with high-density I/O modules.

• Industrial Hardening: Designed to withstand significant vibration and electrical noise common in factory floors.

• Fuse Protection: Includes a user-replaceable fuse to protect the circuitry from overcurrent conditions.

• Seamless Integration: Specifically keyed for the SLC 500 chassis, ensuring a secure and vibration-proof fit.

4. Important Considerations (Precautions)

• Power Budgeting: Before installation, always perform a power load calculation. Ensure the total current draw of your CPU and I/O modules does not exceed 10A at 5V or 2.88A at 24V.

• Wiring Polarity: Since this is a DC unit, reversing the polarity can damage the unit or blow the internal fuse.

• Cooling: Ensure there is adequate clearance around the chassis for airflow, as the P4 generates significant heat when running at full capacity.

• Grounding: Always connect the functional earth ground terminal to a low-impedance ground bus to minimize EMI.

5. Typical Applications

The 1746-P4 is the “workhorse” for SLC 500 systems in specific environments:

• Remote Stations: Powering I/O racks in locations where only 24V DC battery or solar power is available.

• High-Density Racks: Systems using 10-slot or 13-slot chassis filled with modules that require high 5V DC current.

• Automotive/Mobile Equipment: Used in large-scale mobile machinery or assembly lines where DC power is the standard.

Shipping Port: Xiamen, China

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