DDS-LPS Reliance Electric Power Supply Module

The DDS-LPS is a high-performance, industrial-grade DC-DC power supply module manufactured by Reliance Electric (now part of Rockwell Automation), designed specifically for integration with Reliance DDS series industrial control systems and drive platforms. It serves as a critical power conversion unit that steps down a 24VDC input to a regulated 5VDC output, delivering clean, stable power to system backplanes, processor boards, and I/O modules in automation cabinets.

Engineered for rugged industrial environments, the DDS-LPS provides reliable power regulation and isolation to ensure consistent operation of sensitive control electronics. Its compact, open-frame construction supports standard DIN-rail or panel mounting, enabling flexible installation in control cabinets with limited space. The module incorporates comprehensive protection circuits and diagnostic indicators, simplifying troubleshooting and minimizing downtime in critical applications. As a key component of the Reliance DDS ecosystem, it seamlessly integrates with AutoMax PLCs, drive systems, and other DDS-series modules for coordinated industrial automation.

The DDS-LPS is built with high-precision voltage regulation circuitry that maintains a stable 5VDC output under varying load conditions, preventing voltage drift that could disrupt sensitive control components. It supports parallel redundancy, allowing multiple modules to be connected for fault-tolerant power delivery; in the event of one module failure, remaining units automatically sustain power to the system. The module’s wide operating temperature range and robust design enable reliable performance in harsh industrial settings with dust, vibration, and electromagnetic interference. Equipped with LED status indicators, it provides real-time visual feedback on power status, fault conditions, and overtemperature events, facilitating quick on-site diagnosis. Its plug-and-play design ensures compatibility with all Reliance DDS-series backplanes, enabling fast deployment and replacement without complex configuration.

The DDS-LPS is primarily used in industrial automation systems that require stable 5VDC power for control electronics. Typical applications include Reliance AutoMax PLC systems, drive control cabinets for DC/AC motor drives, process control systems in manufacturing, automotive, and material handling industries, as well as retrofit projects for legacy Reliance systems. It is especially suitable for environments where continuous, reliable power is critical to avoid production downtime, such as conveyor lines, extrusion machinery, and tension control systems.

Install the DDS-LPS in a clean, dry, well-ventilated control cabinet with adequate airflow to prevent overheating. Ensure the input voltage matches the module’s 24VDC rating and verify correct polarity during wiring. The module can be mounted on a standard DIN-rail or directly to a panel using mounting holes. Regular maintenance includes inspecting wiring connections for tightness, cleaning dust accumulation from the module surface, and verifying LED indicator operation. Avoid operation in environments with excessive moisture, corrosive gases, or conductive contaminants. Periodically check for signs of overheating or component wear to maintain optimal performance and extend service life.