Allen-Bradley 1738-EP24DC ArmorPoint Expansion Power Module

Allen-Bradley 1738-EP24DC ArmorPoint Expansion Power Module The Allen-Bradley 1738-EP24DC serves as the primary 1738-EP24DC Expansion Power Module utilized to execute 24 VDC field power distribution across ArmorPoint I/O platforms. The module transfers field-side power to downstream I/O segments, allowing additional modules to be connected while maintaining power separation from the primary network adapter. Hardware Specifications Parameter Specification Model 1738-EP24DC Brand Allen-Bradley Product Type Expansion Power Module Product Family ArmorPoint I/O Weight 0.8 lb Dimensions 56 x 39 x 75 mm (approx.) Operating Temp -20 to 60 deg C Storage Temp -40 to 85 deg C Power Consumption Approx. 8 W Input Voltage Range 10 to 28.8 VDC Nominal Supply Voltage 24 VDC Field-Side Power Requirement 24 VDC @ 425 mA max Output Current Capacity Up to 8 A @ 40 deg C Inrush Current 6 A for 10 ms Isolation Voltage 50 V, tested at 1500 VAC for 60 s Enclosure Rating IP65/IP66/IP67 when properly installed Mounting Method ArmorPoint distributed I/O assembly Status Indication Integrated LED indicators EtherNet/IP I/O Density Scaling Within ArmorPoint distributed architectures, the 1738-EP24DC supports I/O density scaling by supplying additional field-side power to downstream module groups. This arrangement reduces loading on the primary adapter power segment and permits expansion of distributed I/O assemblies while maintaining the electrical distribution structure defined by the ArmorPoint platform. Network communication remains managed by the associated adapter while the 1738-EP24DC performs power-segmentation functions. Frequently Asked Questions Q: Does the 1738-EP24DC provide network communication functions? A: No. The module is intended for field-power expansion only. Network communication is handled by the associated ArmorPoint network adapter. Q: What is the maximum downstream current capacity supported by the module? A: The specified downstream output capacity is up to 8 A at 40 deg C. Q: Is the module electrically isolated? A: The unit provides 50 V isolation and is tested at 1500 VAC for 60 seconds according to the published specification. Field Installation Guidelines Verify that the incoming field power source matches the specified 10 to 28.8 VDC input range before energizing the module. Install the module within the designated ArmorPoint assembly sequence and ensure all mechanical latches are fully engaged. Maintain sealed cable connections and enclosure integrity where IP65/IP66/IP67 protection is required. Route power wiring separately from high-energy switching conductors to reduce conducted electrical noise. Terminate cable shields according to site grounding practices and maintain a single-point grounding strategy where applicable. Inspect field connectors periodically for moisture ingress, mechanical damage, and loose terminations. De-energize field circuits before wiring modifications or module replacement activities.