Allen-Bradley 1746-P2 SLC 500 Power Supply Module

The Allen-Bradley 1746-P2 is a robust and versatile power supply module designed for use with the SLC 500 modular automation system. It provides reliable power to the system’s processors, I/O modules, and communication adapters. The module is known for its reliable operation, versatility, and features that support high-inductive load applications in industrial environments.

Key Features and Specifications

Electrical Characteristics:

Input Voltage:
- 85-132 V AC or 170-265 V AC (jumper-selectable).
- Frequency: 47-63 Hz.
Inrush Current:
- Up to 20 A.
Typical Power Requirement:
- 180 VA line power.
Output Voltage:
- 24 V DC, with a range of 18-30 V DC.
- Includes a 5 V DC backplane power output.
Output Current Capacity:
- 5 A at 5 V DC.
- 0.96 A at 24 V DC.
- 200 mA user-supplied power at 24 V DC.
Fuse Protection:
- 1746-F2 internal fuse for short-circuit protection.

Performance and Reliability:

CPU Hold-up Time:
- 20 ms under full load.
- 3000 ms with no load.
Isolation:
- 1800 V AC RMS between input terminals and backplane for 1 second.
Overcurrent Protection:
- Series A/B: Complete power supply and CPU fault shutdown.
- Series C: User power shutdown, CPU continues operation.

Mechanical and Installation:

Dimensions:
- 5.5 x 3.3 x 5.7 inches.
Weight:
- 1.1 kg (2.5 lbs).
Enclosure:
- Open-type, must be installed in a 1746 chassis.
Connections:
- Front panel with 5 terminals for AC line, DC power, and grounding.
- Jumper pins for input voltage selection.

Environmental Specifications:

Operating Temperature:
- 0-60°C.
Storage:
- Designed for industrial environments with proper surge protection.
Compliance:
- Meets industrial safety and reliability standards.

Notable Features:

Voltage Jumper Selection:
- Switchable between 100/120 V AC and 200/240 V AC using jumper pins.
Hold-Up Time Feature:
- Ensures temporary operation of the PLC processor during brief input power dips.
Durable Design:
- Protects against electrical surges and arcs with optional isolation transformers for high-inductive load environments.
Revisions for Enhanced Features:
- Series A/B: Shutdown on overcurrent with CPU fault.
- Series C: Allows CPU to continue running under user power shutdown.

Applications

The 1746-P2 Power Supply is suited for industrial automation systems requiring reliable power delivery, such as:

Manufacturing assembly lines.
Process automation.
Material handling systems.
Machine control applications.

Ordering Information:

Manufacturer: Rockwell Automation
Brand: Allen-Bradley
Catalog Number: 1746-P2
UPC: 10662468088326
Fuse Replacement Part Number: 1746-F2 or equivalent.

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