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1734-EP24DC

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Allen-Bradley 1734-EP24DC is a 24 V DC POINT I/O expansion supply that adds backplane current and starts a new field-power segment.
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Technical specifications for 1734-EP24DC

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1734-EP24DC
  • Product Family:
    Point I/O 1734
  • Product Type:
    POINT I/O 24 V DC Expansion Power Supply
  • Stock:
    1
  • Revision:
    Series B
  • Nominal input:
    24 V DC
  • Input range:
    10...28.8 V DC
  • POINTBus output:
    1.0 or 1.3 A depending on voltage and orientation
  • I/O module capacity:
    4...17 depending on module current
  • Primary function:
    Backplane extension and field-power partition
  • Weight:
    0.12 kg
  • Estimated shipping dimensions:
    7.98x2.53x13.31cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Singapore
  • 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 Specifications Power Segmentation Current and Derating Product Applications

Features:

  • Backplane extension: adds POINTBus current for downstream modules
  • Power partition: starts a new 24 V DC field-power segment
  • Data continuity: passes POINTBus communication through the supply
1734-EP24DC is used when a POINT I/O station needs additional backplane current or a new field-power boundary.

Its output capacity changes with voltage and mounting orientation, making a segment current budget essential.

The module count is an outcome of that budget rather than a fixed promise for every layout.

Availability of 1734-EP24DC is subject to Apter Power inventory and sourcing confirmation.
Allen-Bradley 1734-EP24DC POINT I/O 24 V DC Expansion Power Supply Manuals and Product Resources
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.
Allen-Bradley 1734-EP24DC POINT I/O 24 V DC Expansion Power Supply Specs

General

  • ManufacturerAllen-Bradley
  • Model1734-EP24DC
  • ConditionNew Original ready stock
  • Product FamilyPOINT I/O 1734
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.

Create the new power boundary

  • Partition purpose: define why field power is separated.
  • Placement: install the supply before the downstream group.
  • Continuity: retain POINTBus data through the segment.
  • Documentation: mark upstream and downstream protection clearly.

Calculate usable backplane current

  • Module demand: total the POINTBus current to the right.
  • Input voltage: use the actual minimum operating value.
  • Orientation: apply horizontal or vertical mounting limits.
  • Headroom: preserve margin for voltage drop and future service.

Supported product applications

  • Long POINT I/O stations: extend backplane power for added modules.
  • Analog separation: create a dedicated field-power segment for analog devices.
  • Input-output partitioning: separate functional field-power groups.
  • Cabinet upgrades: add current capacity without interrupting POINTBus data.
Description
1734-EP24DC converts a 24 V DC input to POINTBus power for modules on its right while passing 24 V DC field power into the new segment. The expansion supply adds backplane current without interrupting POINTBus data.

By breaking the field power bus, 1734-EP24DC can separate input and output groups, analog and digital modules, or functional sections of a POINT I/O station. The available output current depends on input voltage and mounting orientation, so derating belongs in the layout calculation.

A Series B 1734-EP24DC is placed between I/O modules and supports a segment whose module count depends on the current drawn by each connected device. Installation planning should retain field-power partition intent, current budget, rail orientation, and voltage-drop evidence.
Revisions

Revision Part #

Also known as

1734-EP24DC Series B
1734-EP24DC/B, Series B
Alternative Names
Allen-Bradley 1734-EP24DC Rockwell Automation 1734-EP24DC AB 1734-EP24DC 1734EP24DC 1734 EP24DC POINT I/O 1734-EP24DC expansion supply
Technical notes
The critical risk with 1734-EP24DC is counting module slots without calculating current and mounting derating. Confirm Series B, 24 V DC input range, horizontal or vertical orientation, POINTBus load, field-power partition, upstream protection, downstream module current, voltage drop, wiring polarity, and the adapter family before energizing the new segment.
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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 should the downstream module limit of 1734-EP24DC be calculated?
Add the POINTBus current of every module to its right, apply input-voltage and orientation derating, and keep the result within available output current.
Why can 1734-EP24DC support fewer modules in one cabinet than another?
Different module currents, input voltage, mounting orientation, voltage drop, and design margin can reduce usable capacity even when the catalog limit is unchanged.
What happens to field power when 1734-EP24DC is inserted between two module groups?
It breaks the previous field-power distribution and starts a new 24 V DC segment for modules on its right while POINTBus data continues.
Can 1734-EP24DC be used only as a field-power separator without considering backplane current?
No. It also supplies POINTBus current downstream, so the segment load, wiring, protection, and mounting derating must still be calculated.
Which voltage symptom indicates a 1734-EP24DC segment needs further investigation?
Low or unstable input under load, an unexpected downstream drop, or POINTBus power faults requires checks of supply capacity, wiring, protection, and module demand.
How should a technician validate 1734-EP24DC after adding analog modules to its right?
Confirm polarity and input voltage, recalculate current, verify the field-power partition, inspect status indicators, and test communication and analog values under load.

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