AB 1794-ACN15
AB 1794-ACN15
AB 1794-ACN15
AB 1794-ACN15
AB 1794-ACN15
AB 1794-ACN15
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  • Lifecycle status

    End of Life
    Discontinued date: 2026-10-31
    Replacement category: Engineering Replacement

1794-ACN15

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Allen-Bradley 1794-ACN15 is a single-channel ControlNet adapter for distributed FLEX I/O nodes.
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Technical specifications for 1794-ACN15

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1794-ACN15
  • Product Family:
    Flex I/O
  • Product Type:
    FLEX I/O ControlNet Adapter Module
  • Stock:
    1
  • Network Protocol:
    ControlNet V1.5
  • Network Media:
    Nonredundant coax, one BNC channel
  • Communication Rate:
    5 Mbps
  • FLEX I/O Capacity:
    8 modules
  • Input Voltage:
    19.2–31.2 V DC
  • Input Current:
    400 mA
  • Inrush Current:
    14 A for 2 ms
  • FLEXBus Output:
    5 V DC, 640 mA
  • Isolation Voltage:
    50 V continuous
  • Isolation Test:
    860 V AC for 60 seconds
  • Power Dissipation:
    3.4 W maximum
  • Operating Temperature:
    -25 to +55 °C
  • Storage Temperature:
    -40 to +85 °C
  • Relative Humidity:
    5–95%, non-condensing
  • Vibration:
    5 g at 10–500 Hz
  • Operating Shock:
    30 g
  • Nonoperating Shock:
    50 g
  • Terminal Screw Torque:
    0.8 N·m
  • Wire Size:
    0.34–2.5 mm² (22–14 AWG)
  • Dimensions:
    9.4 × 8.74 × 9.2 cm
  • Weight:
    0.22 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • 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 Node planning ControlNet commissioning Power and mounting Application
  • FLEX I/O ControlNet adapter with one nonredundant BNC network channel
  • Supports up to eight FLEX I/O modules and communicates at 5 Mbps
  • 19.2–31.2 V DC input with 5 V DC, 640 mA FLEXBus output

1794-ACN15 is the Allen-Bradley ControlNet adapter for a FLEX I/O node.

The adapter couples the ControlNet network to the local FLEXBus, provides node-address switches and status indicators, and supplies the documented 5 V DC bus output for attached modules.

Before replacement, record the node address and network schedule, then verify the BNC tap, termination, input power, FLEXBus keying, mounting base, module count, wiring, and controller configuration.

Availability, condition, price, and shipping time for 1794-ACN15 are confirmed during quotation.

Allen-Bradley 1794-ACN15 FLEX I/O ControlNet Adapter 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.

  • One adapter supports as many as eight FLEX I/O modules
  • Attached-module demand must remain within the FLEXBus power limit
  • Record the installed module order before disturbing the node
  • Uses one nonredundant coaxial BNC ControlNet channel
  • Rotary switches establish the adapter node address
  • Network tap, terminators, keeper and schedule must match the project
  • Verify the documented 19.2–31.2 V DC input range
  • Confirm DIN-rail or panel mounting before installation
  • Check FLEXBus alignment, field wiring and terminal torque before power-up
  • Single-media ControlNet communication for FLEX I/O nodes
  • Distributed I/O integration with ControlLogix and PLC systems
  • Replacement of a documented 1794-ACN15 adapter
Description
1794-ACN15 is a single-channel Allen-Bradley ControlNet adapter for connecting a distributed FLEX I/O node.

It connects the 5 Mbps ControlNet network to the local FLEXBus and supports as many as eight FLEX I/O modules within the adapter power limit.

Before replacement, record the node address and network schedule, then verify the BNC media, taps, termination, field power, FLEXBus alignment, module load, mounting and controller configuration.
Revisions

Revision Part #

Also known as

1794-ACN15 Ser A
1794-ACN15/A, Series A, Rev A
1794-ACN15 Ser B
1794-ACN15/B, Series B, Rev B
1794-ACN15 Ser C
1794-ACN15/C, Series C, Rev C
1794-ACN15 Ser D
1794-ACN15/D, Series D, Rev D
Alternative Names
1794-ACN15 1794 ACN15 1794ACN15 Allen-Bradley 1794-ACN15 Allen Bradley 1794 ACN15 AB 1794-ACN15 FLEX I/O 1794-ACN15 ControlNet 1794-ACN15
Technical notes
Allen-Bradley 1794-ACN15 is a single-channel ControlNet FLEX I/O adapter; record its node address and schedule, then verify BNC media, termination, 24 V DC input, FLEXBus alignment, and eight-module limit.
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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.
How can a buyer confirm that Allen-Bradley 1794-ACN15 matches the existing FLEX I/O station?
Compare the installed adapter label, ControlNet media arrangement, FLEX I/O module sequence, terminal bases, mounting position, power wiring, and controller configuration. Do not select the adapter from the FLEX I/O family name alone.
How can a buyer avoid confusing Allen-Bradley 1794-ACN15 with a redundant-media adapter?
Verify the exact catalog number and the single BNC channel on the installed adapter; 1794-ACN15 is the nonredundant ControlNet model.
What should be documented before replacing Allen-Bradley 1794-ACN15?
Record the ControlNet node address, cable and tap connections, module order, terminal-base arrangement, power wiring, network schedule, and saved controller project so the replacement station can be restored accurately.
Why might Allen-Bradley 1794-ACN15 power up but fail to exchange I/O data?
Common causes include an incorrect node address, an unmatched ControlNet schedule, changed module order, unsuitable terminal-base wiring, missing network termination, or a controller project that does not match the physical FLEX I/O station.
Why must the ControlNet schedule be checked after replacing Allen-Bradley 1794-ACN15?
The node address, keeper and scheduled connections must agree with the controller project and the commissioned ControlNet network.
What do the status indicators on Allen-Bradley 1794-ACN15 help diagnose?
They show adapter/FLEXBus status and the condition of the ControlNet channel, helping separate power, local-bus, and network faults.
What mechanical checks are required before mounting Allen-Bradley 1794-ACN15?
Verify the DIN rail or panel mounting method, connector base, FLEXBus alignment, clearances, node switches, BNC tap routing, and secure field-power wiring.

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