1738-EP24DC | Allen-Bradley | ArmorPoint 24V DC Field Power

Allen-Bradley 1738-EP24DC ArmorPoint I/O Extension Power Module 24V DC

Product Description

The Allen-Bradley 1738-EP24DC (Catalog Number: 1738-EP24DC) is a ruggedized ArmorPoint I/O extension power module engineered for decentralized, on-machine automation. In extensive distributed I/O configurations, voltage drops and current limitations of the primary adapter can impede performance. The 1738-EP24DC resolves this by providing an additional 10 A of field-side power to downstream modules, ensuring that actuators, sensors, and other field devices operate at consistent 24V DC levels.

Constructed for survivability in extreme industrial conditions, this module features a fully encapsulated housing rated at IP67 and IP69K. This allows for direct mounting onto machine frames without the need for additional protective enclosures, even in high-pressure wash-down environments common in food and beverage processing. The module utilizes industry-standard M12 and M23 quick-disconnect connectors to streamline wiring and reduce potential points of failure compared to traditional terminal blocks.

Technical Specifications

Comprehensive engineering data for the 1738-EP24DC:

Key Features

• On-Machine Deployment: Eliminates the cost and space requirements of electrical cabinets by mounting directly in the work cell.

• 10A Power Headroom: Delivers high-capacity field power injection for high-draw devices like solenoid manifolds and large sensor arrays.

• Dual Wash-down Protection: Rated IP67/IP69K, making it resistant to dust, oils, and high-pressure steam cleaning.

• Advanced Diagnostics: Integrated LEDs provide instant visibility into power presence and communication health.

• Seamless Scalability: Allows for longer I/O branches by regenerating the field power bus at strategic intervals.

Industrial Application Scenarios

• Automotive Body Shops: Ideal for robotic welding cells where I/O modules are subject to weld slag and vibration.

• Food & Beverage Processing: Reliable operation in high-hygiene zones requiring frequent caustic wash-downs.

• Conveyor Systems: Managing power distribution across long material handling lines where voltage drop is a significant factor.

• Packaging Machinery: Providing localized power for modular machine sections that are frequently reconfigured.

Frequently Asked Questions

• How does the 1738-EP24DC differ from the 1738-FPD?The 1738-EP24DC is an Extension Power module that regenerates power for the field bus, whereas a Field Power Distributor (FPD) typically segments the bus to allow for different voltage types or safety zones without necessarily boosting the total current capacity.

• Is this module compatible with POINT I/O (1734)?While ArmorPOINT and POINT I/O share the same internal Logix architecture, the 1738-EP24DC is physically designed for on-machine use with sealed connectors. It cannot be physically mated to 1734 terminal bases.

• What cable connectors are required for the power input?The module typically utilizes M23 or M12 connectors depending on the specific sub-series. Always verify the pinout with the Rockwell Automation wiring diagram to ensure 10A current is properly supported by the chosen cabling.