I/O modules

The Allen-Bradley 1746-P2 is a durable and versatile power supply designed for the SLC 500 modular automation system. It delivers stable power to processors, I/O modules, and communication adapters. The module suits industrial environments with high-inductive loads.

Key Electrical Specifications

• 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 (range 18–30 V DC)
• Backplane Power: 5 V DC output
• Output Current: 5 A at 5 V DC, 0.96 A at 24 V DC, 200 mA user-supplied at 24 V DC
• Fuse Protection: 1746-F2 internal fuse

Performance and Reliability

• CPU Hold-Up Time: 20 ms at 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 shuts down CPU and power supply, Series C allows CPU to continue

Mechanical and Installation

• Dimensions: 5.5 × 3.3 × 5.7 inches
• Weight: 1.1 kg (2.5 lbs)
• Enclosure: Open-type; installs in 1746 chassis
• Connections: Front panel with 5 terminals for AC, DC, and grounding; jumper pins for input voltage

Environmental Specifications

• Operating Temperature: 0–60°C
• Storage Conditions: 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
• Hold-Up Time Feature: Ensures temporary PLC operation during brief input dips
• Durable Design: Resists electrical surges; optional isolation transformers for high-inductive loads
• Series Revisions: Series A/B shuts down CPU under overcurrent; Series C maintains CPU operation during user power shutdown

Applications

The 1746-P2 powers automation systems for:

• Manufacturing assembly lines
• Process automation
• Material handling
• Machine control systems

Ordering Information

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

Details