Configured for power conversion and voltage regulation in industrial control networks, the Allen-Bradley 1794-PS3 (1794-PS3 Flex Power Supply) provides direct physical/electrical execution.

Nomenclature and Suffix Breakdown

• Platform Identifier: 1794
• Module Series: Flex I/O Power Supply
• Variant Code: PS3 (120/220 VAC input, 24 VDC output configuration)

Hardware Specification Matrix

Allen-Bradley Industrial Control and Drive Architecture

• Backplane Bus Communication Velocity: Maintains low-latency electrical distribution across modular rack backplanes to support deterministic network communications.
• Profinet and EtherNet/IP Deterministic Networks: Supplies regulated operational power to interface adapters ensuring stable, uninterrupted packet transmission across industrial fieldbuses.
• I/O Density Scaling: Accommodates high-density point loads by delivering up to 3.0 A of continuous 24 VDC output current across expanded module configurations.
• Firmware Flash Compatibility: Provides clean, isolated power architecture that protects intelligent controllers and communication cards during system firmware updates and flash operations.

Delivery Package Contents

• 1 x Allen-Bradley 1794-PS3 Flex Power Supply Unit
• 1 x Protective Terminal Cover Shield
• 1 x Technical Installation Instruction Leaflet

Physical Mounting and Hardware Installation Guidelines

• DIN-Rail Fastening: Mount the power supply unit securely onto a standard 35 mm DIN rail inside the enclosure to maintain mechanical stability under operating vibrations.
• Clearance and Ventilation: Ensure adequate vertical and horizontal spacing around the housing to facilitate natural thermal dissipation and prevent internal overheating.
• AC Input Wiring Separation: Route high-voltage AC supply lines away from low-voltage DC output loops and communication cables to eliminate electromagnetic coupling.

Technical Operation Queries

• What are the acceptable AC input voltage parameters for this power supply?

  The unit accepts a nominal 120/220 V AC input operating across an input frequency range of 47-63 Hz.

• What is the maximum DC output current rating?

  The power supply delivers a continuous output current of 3.0 A at 24 V DC, yielding a total capacity of 86 W.

• How is the internal circuitry protected against overloads?

  Overcurrent protection is integrated into the architecture with a fixed threshold limit of 3.2 A.

• What is the maximum power dissipation value under full load?

  The maximum thermal power dissipation generated by the unit is 12 W.

• What is the specified operating temperature range?

  The unit is engineered to operate reliably in ambient temperatures ranging from 0 deg C to +55 deg C.

• What are the physical dimensions and weight for panel layout design?

  The physical size measures 13.5 cm x 13.2 cm x 9.2 cm with a total mass of 0.5 kg.

• Where is this hardware manufactured and shipped from?

  The module originates from the United States and is dispatched globally through Xiamen, China.

• Does this power supply actively interface with the Flex I/O backplane?

  Yes, it mounts directly to the Flex I/O system base to distribute regulated 24 VDC power across connected adapter and terminal modules.