Allen-Bradley 1794-PS3 Flex I/O 24V DC Power Supply

Allen-Bradley 1794-PS3 Flex I/O Power Supply Module

The Allen-Bradley 1794-PS3 delivers high-capacity power for extensive Flex I/O systems with industrial reliability. This robust power supply module converts AC mains voltage to precise DC power for multiple control modules. 

Input Specifications

• Universal input voltage range from 85 to 264V AC for worldwide operation
• Compatible with 47-63 Hz input frequency across different power grids
• Standard 120V AC input at 1.7A for North American installations
• Efficient 230V AC input at 1.1A for international power systems
• High maximum input current rating of 1.9A for heavy loads
• Robust 40A inrush current withstand capability for startup surges

Output Performance

• Stable 24V DC nominal output voltage for consistent module operation
• Wide output range from 20.4 to 27.6V DC for application flexibility
• High output power of 72 watts for demanding system requirements
• Maximum 3A output current in horizontal mounting orientation
• Reliable 2.8A output current in other orientations for various installations
• Clean power with maximum ±5% output ripple (1200 mV peak-to-peak)

System Capabilities

• Substantial capacity supports up to 10 Flex I/O adapters in one system
• Effective power supply hold-up maintains output for half cycle during dips
• This feature ensures continuous operation during brief power interruptions
• The 1794-PS3 provides reliable power for complex control architectures
• Ideal for large distributed I/O systems requiring multiple module connections

Protection & Safety

• Automatic overcurrent protection at 3.2A for circuit safety
• Minimal leakage current below 0.5 mA RMS for enhanced safety
• The module protects connected equipment from electrical faults and overloads
• All safety features meet industrial standards for reliable operation

Thermal Management

• Efficient power dissipation of 12W during normal operation
• Effective thermal dissipation of 41.0 BTU/hour for heat control
• Designed for continuous operation in industrial temperature ranges
• Proper thermal management ensures long-term reliability and performance

Frequently Asked Questions

• How many adapters can this power supply support? The 1794-PS3 can power up to ten Flex I/O adapters in a single system.
• What is the output current capacity? It delivers 3A in horizontal mounting and 2.8A in other orientations.
• What inrush current can it withstand? The module handles 40A inrush current typical for one AC cycle.
• What is the total output power? This power supply provides 72 watts of total output power for system needs.