1746-P7 | Allen-Bradley | SLC 500 DC Power Supply Module

Product Description

The Allen-Bradley 1746-P7 is a DC power supply module designed for the SLC 500 series chassis. It provides regulated power for CPU and I/O modules, ensuring stable operation in industrial automation systems. With flexible input voltage ranges, robust current capacity, and integrated fuse protection, this unit is engineered for reliable performance in demanding environments.

Key Features

• Manufacturer: Rockwell Automation

• Brand: Allen-Bradley

• Model Number: 1746-P7

• Series: SLC 500

• Type: Power Supply Module

• Input Voltage Range: 10–30 VDC

• Input Power Capacity: 50 W (12 VDC input), 75 W (24 VDC input)

• Typical Line Power Requirement:

• 12 VDC input: 50 VA

• 24 VDC input: 75 VA

• Inrush Current: 20 A required for startup

• Internal Current Capacity:

• 12 VDC input: 2.0 A @ 5 VDC, 0.46 A @ 24 VDC

• 24 VDC input: 3.6 A @ 5 VDC, 0.87 A @ 24 VDC

• CPU Hold-Up Time:

• 12 VDC input: 1.37 ms at 0 VDC (full load), 895 ms at 0 VDC (no load)

• 24 VDC input: 40 ms at 0 VDC (full load), 1860 ms at 0 VDC (no load)

• General: 20 ms (full load), 3000 ms (no load)

• Backplane Current (24 VDC): 0.46 A

• Operating Frequency: 47–63 Hz

• Operating Temperature: 0–60 °C

• Fuse Protection: 1746-F1 or equivalent

• Location: Designed for installation in 1746 chassis

• Weight: 2.19 lbs (≈ 0.99 kg)

Application Scenarios

• SLC 500 Systems: Provides regulated DC power for CPU and I/O modules

• Process Control: Ensures stable operation in manufacturing and energy automation systems

• Panel Installations: Compact design for integration into control enclosures

• Legacy Support: Compatible with existing SLC 500 chassis installations

FAQ

Q: What input voltage range does the 1746-P7 support?  A: 10–30 VDC.

Q: What is the maximum input power capacity?  A: 75 W at 24 VDC input.

Q: What fuse protection is required?  A: 1746-F1 or equivalent.

Q: How does it compare to the 1746-P1 AC power supply?  A: The 1746-P7 is designed for DC input, while the 1746-P1 supports AC input, making each suitable for different installation requirements.