Bosch Rexroth DDS3.1‑W (DDS03.1‑W) Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS3.1‑W (DDS03.1‑W) Digital Servo Drive

Product Description The DDS3.1‑W (full series DDS03.1‑W) is a modular digital AC servo drive from Bosch Rexroth Indramat, the next‑generation upgrade of the DDS02.1 series, designed for high‑performance multi‑axis automation. It features internal cabinet convection cooling (W), supports 30–50 A continuous current and 60–100 A peak current, and accepts digital (D) or resolver (R/RL) feedback. Optimized for tighter integration, faster loop cycles, and enhanced communication flexibility for DIAX03 systems.

Description

Model Definition (DDS03.1‑WXX‑XXXX‑XX)

DDS3.1 / DDS03.1: Third‑generation DDS servo drive platform (DIAX03 compatible)

W: Internal cabinet convection cooling (no external fan; cabinet airflow)

030/050: 30 A / 50 A continuous current; 60 A / 100 A peak current

D: Digital feedback (EnDat/HIPERFACE); RL01/RL20: Resolver feedback

DSxx: SERCOS interface; DLxx: PROFIBUS; 01/00: Hardware revision

Technical Specifications

Electrical Parameters

DC bus voltage: 300 V DC ±15% (TVD/TVM power units)

Control power: 24 V DC (20–28 V DC)

Continuous current: 30 A (030) / 50 A (050)

Peak current: 60 A / 100 A (<1 s)

Current loop: 62.5 μs (faster than DDS02.1)

Speed loop: 250 μs

Position loop: 1 ms

Power dissipation: ~450 W (030) / ~700 W (050)

Compatible motors: MDD/MKD synchronous, LAR/LAF linear, 2AD/ADF series

Mechanical & Environmental

Cooling: Internal convection (W; cabinet ventilation only)

Protection: IP20 (front), IP10 (unit)

Operating temp: 0 °C to +45 °C (20% derating @55 °C)

Storage temp: -30 °C to +85 °C

Max altitude: 1000 m (35% derating above)

Dimensions (W×H×D): 120 mm × 408 mm × 180 mm (030); 150 mm × 408 mm × 180 mm (050)

Weight: ~5.5 kg (030); ~7.0 kg (050)

Interface & Communication Configuration

Motor feedback: X4 dual‑channel (digital EnDat/HIPERFACE or resolver)

System bus: Shared 300 V DC bus for multi‑axis parallel

Communication: SERCOS (DSxx), PROFIBUS (DLxx), CANopen via U1–U5 slots

Digital I/O: 6 isolated inputs / 3 isolated outputs

Service port: RS232 (IndraWorks setup/diagnostics)

Expansion: U1–U5 for I/O, fieldbus, or single‑axis positioning modules

Core Functions

High‑speed three‑loop control (62.5 μs current loop) for ultra‑dynamic response

Dual feedback support: Digital (high precision) or resolver (harsh environment)

Convection cooling for compact cabinet installation (no external fans)

Multi‑axis synchronization via SERCOS (DSxx) for tight motion coordination

Comprehensive protection: Overvoltage/undervoltage/overcurrent/short‑circuit/overheating/feedback loss

Control modes: Torque/speed/position (with single‑axis positioning option)

Modular design for easy maintenance and axis expansion

Application Scenarios

High‑speed CNC main axes and multi‑axis machine tools

Printing, textile, and packaging machinery requiring precise synchronization

Robotics, gantry systems, and automated assembly lines

DIAX03 system upgrades (replacing DDS02.1 for higher dynamics)

Cabinet‑space‑constrained equipment with convection‑only cooling

Usage & Maintenance

Ensure ≥50 mm clearance around unit for unobstructed cabinet airflow

Keep ambient ≤45 °C; monitor heat sink temperature

Complete power/feedback/bus wiring before power‑on; torque terminals to spec

Configure via IndraWorks: Match motor parameters, tune loops, set up fieldbus

Clean heat sinks/air passages every 6 months; inspect terminals for corrosion

Calibrate loops, feedback, and communication annually for long‑term stability


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