Allen-Bradley 1746-P1 Power Supply – 2A Output SLC 500 Systems

Allen-Bradley 1746-P1: SLC 500 Power Supply Module

Power your SLC 500 system reliably with the Allen-Bradley 1746-P1 power supply. This essential module converts AC line voltage to stable DC power for your entire chassis. The 1746-P1 ensures your PLC system operates smoothly with built-in protection features.

Product Overview

The Allen-Bradley 1746-P1 is the heart of any SLC 500 system. This 1746-P1 power supply module converts incoming AC power to the DC voltages needed by all other modules in the chassis. It provides reliable, stable power for your entire control system.

Technical Specifications

Brand: Allen-Bradley (Rockwell Automation)
Series: SLC 500
Model: 1746-P1
Module Type: Power Supply
Input Voltage: 85-132V AC / 170-265V AC
Input Frequency: 47-63 Hz
Input Power: 135 VA typical
Inrush Current: 20 A maximum
Output Voltage 1: 5V DC ±5%
Output Current 1: 2.0 A maximum
Output Voltage 2: 24V DC (18-30V range)
Output Current 2: 0.46 A maximum
User Power Output: 24V DC at 200 mA
Hold-up Time (full load): 20 ms
Hold-up Time (no load): 3000 ms
Isolation Voltage: 1800V AC for 1 second
Operating Temperature: 0 to 60°C (32 to 140°F)
Fuse Type: 1746-F1 or equivalent
Dimensions: 5.5 x 2.3 x 5.7 inches
Weight: 2.0 pounds (0.9 kg)

Comparison With Output Modules

This power supply works with these output modules:
Allen-Bradley 1746-OV32 (32-Point DC Output Module)
Allen-Bradley 1746-OV8 (8-Point DC Output Module)

Frequently Asked Questions

• Where does this power supply install in the chassis?
  The 1746-P1 must be installed in the leftmost slot (slot 0) of any SLC 500 chassis.
• What is the purpose of the voltage selector jumper?
  The jumper must be set to match your incoming AC voltage (120V or 240V) before applying power.
• Can I use this power supply with expansion chassis?
  Yes, each SLC 500 chassis (main or expansion) requires its own power supply module.
• What happens during a power interruption?
  The power supply provides hold-up time (20ms-3000ms) allowing the processor to maintain operation during brief outages.
• How do I replace the fuse?
  Use only the specified 1746-F1 fuse or equivalent. Always disconnect power before replacing the fuse.

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