MD-D4002B

The MD-D4002B is a high‑performance industrial control module manufactured by Reliance Electric, designed for precise digital control of motor drives and automation systems in demanding industrial environments. As a key component in Reliance’s MD series, it integrates advanced digital signal processing and robust hardware to deliver reliable, efficient, and consistent control for a wide range of industrial applications.

Engineered for versatility, the MD-D4002B operates with a single‑phase power supply supporting 115 VAC or 230 VAC input voltage, compatible with 50 Hz or 60 Hz global frequency standards. It delivers up to 2.0 HP output power, making it suitable for small‑to‑medium motor control tasks such as machinery automation, conveyor systems, and process control equipment. The module features digital control architecture that ensures accurate speed, torque, and position regulation, minimizing operational errors and enhancing system stability.

Constructed with industrial‑grade components, the MD-D4002B is built to withstand harsh conditions. It is enclosed in a NEMA 12K‑rated housing that provides protection against dust, dirt, and splashing liquids, ensuring durability in factory floors, production lines, and outdoor installations. The operating temperature range spans from -20°C to 60°C, with some specifications extending to -40°C to +85°C, enabling reliable performance across extreme climate conditions.

The MD-D4002B features a compact, rack‑mountable design for easy integration into existing control panels and automation setups. It supports seamless retrofitting, being fully compatible with Reliance AutoMax processors and capable of operating alongside legacy Reliance drive control modules in the same rack. The module incorporates clear wiring terminals and an intuitive user interface, simplifying installation, configuration, and maintenance procedures.

Key electrical characteristics include a maximum switching voltage of 200 VDC and a maximum switching power of 10 watts, with Form A (normally open) contact type for safe and efficient circuit control. Its digital I/O capabilities enable seamless communication with other industrial devices, facilitating real‑time monitoring and adjustment of drive parameters for optimized performance.

Common applications for the MD-D4002B include industrial motor control, factory automation systems, material handling equipment, and process control solutions. Whether deployed in new installations or used to upgrade legacy systems, this Reliance Electric control module offers exceptional reliability, precision, and cost‑effectiveness, backed by the brand’s long‑standing reputation for industrial automation excellence.