Allen-Bradley 1734-EP24DC Expansion Power Supply Module – POINT I/O Series
Imagine a mid-shift production halt on your automotive assembly line — not because of a failed robot or a broken conveyor, but because a downstream POINT I/O bank silently lost power. Without an adequate expansion power supply, I/O modules starve for current, field devices go dark, and your PLC loses visibility into the process. Recovery means manual inspection across every terminal, costing hours of downtime and thousands in lost output. The Allen-Bradley 1734-EP24DC exists precisely to prevent this scenario: it delivers dedicated 24 VDC power to extended POINT I/O banks, ensuring every module in the segment receives clean, stable power regardless of how far the bank stretches from the adapter.
Within the Rockwell Automation POINT I/O family — one of the most widely deployed modular I/O platforms in global discrete and process manufacturing — the 1734-EP24DC occupies a critical infrastructure role. It is not a signal module; it is the power backbone that makes large-scale POINT I/O configurations viable. From automotive OEMs in Germany to food-and-beverage plants across Southeast Asia, system integrators specify the 1734-EP24DC wherever I/O segment current budgets exceed what the primary adapter can supply. Its compact DIN-rail form factor and tool-free installation have made it a standard BOM item in ControlLogix, CompactLogix, and GuardLogix architectures worldwide.
Technical Specifications
- Catalog Number: 1734-EP24DC
- Series: Allen-Bradley POINT I/O
- Input Voltage: 24 VDC (nominal)
- Function: Expansion power supply for POINT I/O module banks
- Mounting: DIN rail (35 mm)
- Form Factor: Single-slot POINT I/O width
- Operating Temperature: 0 °C to 55 °C (32 °F to 131 °F)
- Storage Temperature: -40 °C to 85 °C
- Relative Humidity: 5% to 95% non-condensing
- Certifications: UL, CE, cUL (verify current listing with Rockwell)
- Weight: Approx. 200 g
Note: All specifications are sourced from publicly available Rockwell Automation documentation. Konmask.com does not fabricate or alter manufacturer data. Always verify against the official product bulletin before final design.
Key Features & Benefits
- Dedicated segment power: Injects 24 VDC directly into the POINT I/O backplane power rail, extending the current budget beyond the adapter’s native capacity.
- Seamless bank expansion: Allows engineers to add more I/O modules to a single adapter without redesigning the entire I/O architecture.
- Tool-free installation: Snaps onto standard 35 mm DIN rail and connects to adjacent modules via the integrated side-bus connector — no wiring harness required.
- Compact footprint: Occupies only one POINT I/O slot width, minimizing panel real estate impact.
- Wide environmental tolerance: Rated for industrial ambient conditions, suitable for cabinet-mounted and near-machine installations.
- Rockwell ecosystem compatibility: Fully validated within Studio 5000 / RSLogix 5000 architectures; no additional configuration required in the controller.
Industry & Equipment Applications
- Automotive manufacturing: Body-in-white welding cells, paint shop conveyors, and end-of-line test stations with high I/O point counts.
- Food & beverage: Filling lines, pasteurization systems, and packaging machines requiring hygienic, compact I/O distribution.
- Pharmaceutical: Batch reactors and clean-room HVAC panels where validated Rockwell platforms are mandated.
- Oil & gas: Wellhead RTU panels and pipeline SCADA nodes using CompactLogix with extended I/O banks.
- Material handling: Sortation systems and AS/RS installations with distributed I/O across long conveyor runs.
- Water & wastewater: Pump station control panels with mixed digital and analog I/O on a single POINT I/O adapter.
System Integration & Compatible Parts
The 1734-EP24DC is designed to work within the broader POINT I/O ecosystem. Common companion parts include:
- 1734-AENT / 1734-AENTR — EtherNet/IP POINT I/O adapters (primary power source for the bank)
- 1734-IB8 / 1734-OB8 — 8-point 24 VDC digital input/output modules
- 1734-IE4C / 1734-OE4C — 4-channel analog current I/O modules
- 1734-TOP / 1734-TOP3 — POINT I/O wiring bases (required for all signal modules)
- 1734-EPAC — Expansion power supply for AC-powered segments
- 1756-L8x ControlLogix / 5069-L3x CompactLogix — Compatible host controllers
When sizing your I/O bank, calculate the total current draw of all modules downstream of the adapter and insert a 1734-EP24DC wherever the cumulative load approaches the adapter’s output current limit.
Our Quality Assurance Process
- Source verification: All units are sourced from authorized distributors or directly from Rockwell Automation’s supply chain. We do not knowingly stock counterfeit or grey-market product.
- Visual inspection: Every module is inspected for physical damage, label integrity, and correct catalog number before dispatch.
- Functional testing (where applicable): Refurbished or surplus units undergo power-on verification before shipment.
- Secure packaging: ESD-safe bags and foam-lined cartons protect modules during international transit.
- Documentation: Certificate of conformance and test reports available upon request for critical applications.
How to Order
- Submit an inquiry via the “Get a Quote” button or email support@konmask.com.
- Provide your required quantity, delivery timeline, and destination country.
- Our team will respond within 1 business day with availability, lead time, and a formal quotation.
- Upon PO confirmation, we arrange shipment via DHL, FedEx, or sea freight depending on order size.
- Tracking information and commercial invoice are provided for all international shipments.
Why Choose Konmask.com?
- Industrial automation specialists: We focus exclusively on PLC, DCS, and automation hardware — not a generalist marketplace.
- Global B2B fulfillment: We ship to 50+ countries with experience navigating customs documentation for industrial components.
- Responsive technical support: Our team includes engineers who can assist with compatibility questions and system design.
- Competitive pricing: Direct sourcing relationships allow us to offer market-competitive pricing on both new and surplus inventory.
- Reliable lead times: We maintain stock of fast-moving Rockwell parts and provide honest lead-time commitments.
Frequently Asked Questions
Q: What is the difference between the 1734-EP24DC and the 1734-EPAC?
A: The 1734-EP24DC accepts a 24 VDC input and is used in DC-powered POINT I/O segments. The 1734-EPAC accepts 120/240 VAC input and is used where AC power is available at the panel. Choose based on your panel’s available power source.
Q: How many 1734-EP24DC modules can I use in a single POINT I/O bank?
A: Rockwell Automation specifies the maximum number of modules per bank and the placement rules for expansion power supplies in Publication 1734-UM011. Consult that document for your specific adapter and module mix.
Q: Do I need to configure the 1734-EP24DC in Studio 5000?
A: No. The 1734-EP24DC is a passive power supply module and does not appear as a configurable node in the Studio 5000 I/O tree. It is transparent to the controller.
Q: Can Konmask.com provide a certificate of conformance?
A: Yes. Please request it at the time of inquiry and we will include it with your shipment documentation.
Q: What is the minimum order quantity?
A: We accept single-unit orders. Volume pricing is available for quantities of 5 or more — please mention your quantity in your inquiry.
Q: How long does international shipping take?
A: Express courier (DHL/FedEx) typically delivers within 3–7 business days to most destinations. Sea freight options are available for large orders.
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