PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-PS1 is a FLEX I/O power supply module providing 24V DC output power. It operates with an AC input voltage range from 85V AC to 265V AC at 47 to 63 Hz. The nominal input supply voltage is 120V AC or 230V AC with 0.4A maximum current. The unit supplies 24V DC with an output voltage range from 22.8V DC to 25.2V DC. It delivers a continuous maximum output current of 1A to drive connected adapter modules.
The module provides internal overvoltage protection limited to 35V DC. Galvanic isolation is rated at 1500V AC for 1 minute and 2500V DC for 1 second. Inrush current is 30A for one AC cycle, with an output surge rating of 23A for 2ms. The unit supports DIN rail or panel mounting in horizontal or vertical orientations. The operating temperature spans 0 to 55 degrees Celsius within 5 to 95 percent relative humidity.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Product Line | Flex I/O 1794 |
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| Weight | 0.44 lbs (0.20 kg) |
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| Input Supply Voltage nom. | 230V AC, 47-63Hz, 0.4A max. |
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| Voltage Range | 85-265V AC |
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| Inrush Current | 30A for 1 AC Cycle |
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| Output Voltage nom. | 24V DC |
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| Output Voltage Range | 22.8-25.2V DC |
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| Output Current | 1A max. |
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| Minimum Load | 100mA |
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| Overvoltage Protection | 35V DC |
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| Isolation Voltage | 1500V AC for 1 min. |
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TECHNICAL INFORMATION
Features
- Accepts wide input voltage from 85V AC to 265V AC at 47 to 63 Hz.
- Delivers 24V DC output power with 1A continuous maximum current.
- Provides peak surge current capability of 23A for 2 milliseconds.
- Limits output overvoltage internally to 35V DC.
- Offers electrical isolation rated at 1500V AC for 1 minute.
- Supports DIN rail and panel mounting in horizontal or vertical orientations.
TECHNICAL INFORMATION
Applications
- Supplying 24V DC power to up to three Allen-Bradley FLEX I/O adapter modules.
TECHNICAL INFORMATION
Connections / Interfaces
- Terminal blocks support stranded wire sizes up to 4 mm².
- Wire insulation thickness limit is 3/64 inch or 1.2 mm.
- Power output connects directly to power up to three FLEX I/O adapters.
TECHNICAL INFORMATION
Installation Guidelines
- Install the unit onto a standard DIN rail or mount directly to a panel.
- The module operates in either horizontal or vertical mounting orientations.
- Maintain operational ambient temperatures between 0 and 55 degrees Celsius.
- Use 4 mm² stranded wiring with up to 1.2 mm insulation.
TECHNICAL INFORMATION
Configuration Guidelines
- Maintain a minimum load of 100 mA for stable output voltage regulation.
- Verify total connected adapter consumption remains at or below 1A continuous current.
TECHNICAL INFORMATION
Compatibility
- Supplies 24V DC power to up to three Allen-Bradley FLEX I/O adapter modules.
TECHNICAL INFORMATION
Compliance and Certifications
- IEC-tested to withstand 5G operational vibration and 30G operational shock.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSSupplies 24V DC power to up to three Allen-Bradley FLEX I/O adapter modules.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the input voltage range of the Allen-Bradley 1794-PS1?
The unit accepts an input voltage range of 85V AC to 265V AC at 47 to 63 Hz.
How many adapter modules can the 1794-PS1 power?
The 1794-PS1 supplies 24V DC power for up to three connected FLEX I/O adapter modules.
What is the minimum load requirement for the 1794-PS1 power supply?
The unit requires a minimum load of 100 mA for proper output regulation.
