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Product Overview
The Allen-Bradley 1398-DDM-075 is a high-performance digital servo drive from the Ultra 200 series, engineered by Rockwell Automation to deliver precise torque, speed, and position control for brushless AC servo motors in demanding industrial automation applications. As a universal drive accepting 100–240 VAC input in either single-phase or three-phase configuration, the Allen-Bradley 1398-DDM-075 offers exceptional flexibility for global installations with varying power infrastructure . With a continuous output power rating of 7.5 kW (10 HP) and peak current capabilities reaching 75 A in three-phase operation, this drive provides the dynamic response necessary for rapid acceleration and heavy transient load handling .
The Allen-Bradley 1398-DDM-075 leverages advanced vector control algorithms to achieve exceptional precision, with position accuracy rated at ±0.001° and a speed control range extending to 6000 rpm . This makes the drive particularly suited for applications where smooth motor operation at low speeds and precise positioning are critical. The unit’s internal shunt regulator and substantial 4290 µF bus capacitance ensure stable DC bus performance during demanding acceleration and deceleration cycles, preventing voltage fluctuations that could compromise motion quality .
For system integration, the Allen-Bradley 1398-DDM-075 comes equipped with a standard SERCOS interface, enabling seamless real-time communication with Rockwell Automation Logix-series programmable automation controllers . The drive also features comprehensive onboard I/O, including five user-configurable digital inputs, four assignable sourcing outputs, two dedicated relay outputs, and high-resolution analog channels, allowing direct connection to sensors, limit switches, and other field devices without additional expansion hardware . The Allen-Bradley 1398-DDM-075 belongs to the legacy Ultra 200 series, a proven platform that continues to serve installed systems across manufacturing facilities worldwide.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1398-DDM-075 |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Type | Universal Digital Servo Drive |
| Series | Ultra 200 |
| Input Voltage | 100–240 VAC, Single or Three-Phase |
| Input Frequency | 47–63 Hz |
| Continuous Output Current | 15 A (Single-phase) / 35 A (Three-phase) |
| Peak Output Current | 50 A (Single-phase) / 75 A (Three-phase) |
| Continuous Output Power | 7.5 kW (10 HP) |
| DC Bus Voltage | 141–339 VDC |
| Bus Capacitance | 4290 µF |
| Control Mode | Closed-loop Vector Control (Torque, Velocity, Position) |
| Speed Range | 0–6000 rpm |
| Position Accuracy | ±0.001° |
| Communication Interface | SERCOS |
| Protection Features | Overload, Overvoltage, Undervoltage, Overheating, Short-Circuit |
| Enclosure Rating | IP20 |
| Cooling Method | Forced Air Cooling |
| Dimensions (H × W × D) | 360.6 × 151.7 × 224.5 mm |
| Weight | Approx. 9.7 kg |
| Operating Temperature | 0°C to +55°C |
