1746-P3 A

Overview of Allen-Bradley 1746-P3 Power Supply Module

The Allen-Bradley 1746-P3 is a DC power supply module designed for the SLC 500 modular programmable controller system. It operates on an input supply voltage range of 19.2 to 28.8 V DC and provides regulated power to the SLC 500 backplane. This module is essential for powering the controller and the I/O modules connected to the system, ensuring stable operation in industrial automation environments.

Key Features

• Input voltage range: 19.2 to 28.8 V DC nominal (typically 24 V DC)
• Internal current capacity: 3.6 A at 5 V DC and 0.87 A at 24 V DC
• Typical line power requirement: 90 VA
• Maximum inrush current: 20 A
• Fuse protection: pre-installed 1746-F3 fuse or equivalent
• CPU hold-up time: 5 ms at full load and 1000 ms at no load
• Isolation: withstand voltage of 600 V AC RMS for 1 second between chassis ground and input terminals
• Operating temperature range: 0 to 60 °C (32 to 140 °F)
• Designed for up to 2000 meters altitude without derating
• Open-type chassis-mounted module (left-most slot installation, not occupying a chassis slot)

Technical Specifications

Applications

The 1746-P3 power supply module is a crucial component for the SLC 500 system, providing stable and reliable power to controllers and I/O modules. It is commonly used in industrial automation setups requiring consistent power delivery and protection against voltage fluctuations.