Allen-Bradley 1398-DDM-075-A | 750W Brushless Servo Drive with Indexer

Technical Specifications

Main Features and Advantages

The Allen-Bradley 1398-DDM-075-A​ stands out due to its powerful integrated motion control engine. The onboard indexer allows the drive to execute complex motion profiles—including point-to-point moves, contouring, and gearing—independently. This “smart drive” capability reduces the complexity and cost of the overall control system, as it eliminates the need for a separate motion controller card for many applications. The drive uses advanced digital signal processing (DSP) and sinusoidal commutation, which provides smoother motor operation, less audible noise, and higher efficiency compared to traditional trapezoidal commutation, especially at low speeds. This results in superior velocity regulation and precise torque control, which is critical for applications like winding, pressing, or assembly.Simplified setup and robust connectivity: The Allen-Bradley 1398-DDM-075-A​ features auto-tuning functionality that dynamically identifies the connected motor’s electrical parameters and mechanical load characteristics, then optimizes the servo control loops (gains) for stable and responsive performance. This greatly simplifies commissioning, even for users with limited servo expertise. The drive offers flexible I/O, with programmable digital inputs and outputs that can be configured for functions like program start, fault reset, and drive status. The serial communication port (DSI) enables easy configuration, real-time monitoring, and data logging using Allen-Bradley’s configuration software. Furthermore, the Allen-Bradley 1398-DDM-075-A​ is designed for reliability, with comprehensive fault protection and diagnostic LEDs that provide clear indication of operating conditions, helping to minimize downtime. Its compact, modular design facilitates easy installation and integration into control panels, making it an ideal choice for OEM machine builders and system integrators seeking high-performance motion in a space-efficient package.

Application Field

The Allen-Bradley 1398-DDM-075-A​ is engineered for precision motion control applications across a wide spectrum of automated machinery. In packaging equipment, it is extensively used to control the intermittent motion of form-fill-seal machines, where rapid and accurate indexing is required to position film, fill product, and seal packages. Its high-speed positioning capability makes it ideal for controlling cut-off knives, rotary sealers, and product placement actuators. Similarly, in printing and converting machinery, the Allen-Bradley 1398-DDM-075-A​ drives print cylinders, die-cut stations, and rewinds, ensuring precise registration and tension control to maintain print quality and prevent material waste.Within assembly automation, this drive is perfect for single-axis pick-and-place units, screwdriving stations, and precision XY tables used in electronics manufacturing. The integrated indexer allows for complex sequences of moves to be programmed directly into the drive, enabling fast, standalone operation of these modules. The Allen-Bradley 1398-DDM-075-A​ is also a strong fit for material handling applications, such as controlling small conveyors for precise product positioning, operating diverters and gates in sortation systems, and driving actuators for robotic tool changers or grippers. In textile and woodworking machinery, it provides the precise speed and torque control needed for spindle drives, feeders, and flying shears. Its combination of compact power, standalone intelligence, and precise control makes the Allen-Bradley 1398-DDM-075-A​ a versatile solution for adding high-performance motion to a vast array of industrial machines.