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1794-PS3

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Allen-Bradley 1794-PS3 converts 120/230 V AC to 24 V DC for as many as ten FLEX I/O adapters, subject to mounting-orientation derating.
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Technical specifications for 1794-PS3

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1794-PS3
  • Product Family:
    Flex I/O
  • Product Type:
    FLEX I/O 24 V DC 3 A Power Supply Module
  • Stock:
    1
  • Input:
    120/230 V AC, 50/60 Hz
  • Output:
    24 V DC
  • Output current:
    3 A horizontal; 2.8 A in other documented orientations
  • Adapter capacity:
    Up to 10 FLEX I/O adapters
  • Indicator:
    Green output-power status
  • Mounting:
    DIN rail
  • Enclosure:
    Open style
  • Operating temperature:
    0...55 °C
  • Estimated shipping dimensions:
    8.7 x 9.4 x 6.9 cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Malaysia
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Load Budget Mounting Protection Product Applications

Features:

  • Remote-station power: regulated 24 V DC for FLEX I/O adapter groups
  • Orientation-dependent rating: available current changes with mounting position
  • Protected output: voltage-status indication and documented reset behavior
1794-PS3 is the higher-current supply option for FLEX I/O stations with several adapters.

Its usable capacity comes from the real load calculation and mounting orientation, not the maximum adapter statement alone.

The cabinet record should show AC protection, earth, spacing, orientation, load reserve, distribution wiring, and reset procedure.

Apter Power can coordinate official-document review, quotation, and sourcing support for 1794-PS3.
1794-PS3 FLEX I/O 24 V DC 3 A Power Supply Module Manuals, Datasheets, Links Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Actual demand: total every adapter and associated 24 V DC requirement.
  • Operating reserve: include approved growth and wiring loss without exceeding the rating.
  • Distribution: size the daisy-chain conductors and protection for the complete group.
  • Horizontal rating: apply the official 3 A output only in the documented position.
  • Other positions: use the published 2.8 A limit where the instructions permit them.
  • Clearance: retain enclosure spacing and airflow around the supply.
  • Status indicator: compare the green light with measured AC input and DC output.
  • Fault cause: inspect overload, short circuit, wiring, and branch protection.
  • Reset: remove input power for the official interval after correcting overvoltage.
  • Multi-adapter stations: supply several FLEX I/O adapters within the verified load budget.
  • Distributed panels: convert common industrial AC input to local 24 V DC.
  • Expanded remote I/O: support larger adapter groups where orientation and load allow.
Description
1794-PS3 is a FLEX I/O power supply that converts 120/230 V AC to regulated 24 V DC for remote adapter groups. Its output rating depends on the documented mounting orientation, so the panel layout is part of the electrical design.

One 1794-PS3 can feed multiple FLEX I/O adapters through the provided output distribution when the calculated demand remains within the available current. The green indicator reports that output voltage is inside the official operating window.

Before energizing 1794-PS3, confirm branch protection, protective earth, spacing, orientation, output conductors, and the complete adapter load. If overvoltage protection operates, correct the cause and use the manufacturer reset sequence instead of cycling power repeatedly.
Alternative Names
Allen-Bradley FLEX I/O PS3 Rockwell 1794 PS3 3A Supply 1794PS3 DIN-rail power module FLEX I/O ten-adapter supply
Technical notes
The full output rating of 1794-PS3 applies only in the documented horizontal mounting position; other approved orientations have a lower limit. Calculate the complete 24 V DC demand with reserve, then compare the chosen panel orientation before using the adapter-count statement as a design value.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why can 1794-PS3 support fewer adapters than the published maximum?
The actual adapter and attached 24 V DC demand, wiring loss, reserve, enclosure temperature, and mounting orientation can reach the current limit first.
What should be checked when the green indicator on 1794-PS3 is dark?
Measure AC input and DC output, inspect branch protection, protective earth, shorts, overload, terminals, and whether overvoltage protection has latched.
How does mounting orientation change a 1794-PS3 load calculation?
Use the official 3 A value only for horizontal mounting and the documented 2.8 A boundary for other permitted positions, then recalculate reserve.
Why should 1794-PS3 not be reset repeatedly after overvoltage shutdown?
Repeated cycling without removing the cause can stress the station and obscure the fault; inspect the supply and load, then follow the official timed reset procedure.
What must be reviewed before extending the 1794-PS3 output daisy chain?
Recalculate current, conductor capacity, voltage drop, protection, terminal loading, polarity, adapter grouping, and the effect of the added load on operating reserve.
Which information makes a 1794-PS3 quotation useful for panel engineering?
Include complete nameplates, input system, orientation, adapter list, load calculation, condition, quantity, destination, and required delivery date.