Product Details
Overview
The 1794-PS3 is an Allen-Bradley FLEX I/O power supply designed to deliver stable 24V DC output for industrial control systems. It is optimized for compact installation with open-style mounting and provides high reliability across a wide input voltage range.
Technical Specifications
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Manufacturer: Allen-Bradley
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Product Line: FLEX I/O
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Part Number: 1794-PS3
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Product Type: FLEX I/O Power Supply Module
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Indicators: 1 green power status LED
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Nominal Input Voltage: 120V AC, 47–63 Hz, 1.4 A; 230V AC, 47–63 Hz, 0.8 A
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Input Voltage Range: 85–264V AC
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Maximum Input Current: 1.9 A
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Inrush Current: 30 A, 1 AC cycle @ 264V AC, 55 °C
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Nominal Output Voltage: +24V DC
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Output Voltage Regulation: 20.4–27.6V DC (±15%, includes noise and 5% AC ripple)
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Maximum Output Current: 3 A horizontal mount; 2.8 A other orientations
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Output Power: 72 W
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Power Dissipation: 12 W
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Thermal Dissipation: 41.0 BTU/hr
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Terminal Base Screw Torque: 0.8 Nm (7 lb-in.)
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Enclosure: Open-style, no enclosure
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Dimensions (HxWxD): 87 × 94 × 69 mm (3.43 × 3.70 × 2.72 in)
Key Features
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Stable 24V DC Output: Ensures reliable power to FLEX I/O modules
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Wide Input Range: Operates under 85–264V AC with high tolerance to inrush current
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Compact Open-Style Design: Allows flexible installation in control cabinets
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Visual Power Indicator: Green LED confirms module operation
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Low Thermal Dissipation: Efficient design reduces heat buildup
Applications
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Powering FLEX I/O digital and analog modules
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Industrial process control and automation cabinets
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Systems requiring compact, high-reliability 24V DC supply
FAQs
Q: What is the maximum output current of the 1794-PS3?
A: Up to 3 A for horizontal mounting, 2.8 A for other orientations.
Q: What is the input voltage range supported?
A: 85–264V AC, 47–63 Hz.
Q: Does this module include an enclosure?
A: No, it is open-style and designed for panel mounting.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Why Programmable Logic Controllers Drop into Stop Mode: An Expert Analysis
Industrial automation systems rely heavily on Programmable Logic Controllers (PLCs) to maintain uninterrupted production. When a PLC unexpectedly shifts from Run to Stop mode, whole manufacturing lines stall.
As control systems evolve across modern factory automation, understanding the root causes of these interruptions helps engineers minimize costly downtime. This technical guide breaks down why PLCs trip into Stop mode and provides practical strategies to mitigate system faults.
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.