Bosch Rexroth DDS2.1-W200-D Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS2.1-W200-D Digital Servo Drive

Product Description The DDS2.1-W200-D (full model: DDS02.1-W200-D) is a modular digital AC servo drive from the Bosch Rexroth (Indramat) DDS02.1 series, designed exclusively for DIAX02 control systems. It features internal cabinet convection cooling, delivers 200 A continuous current and 400 A short‑term peak current, and supports digital servo motor feedback (DSF). Optimized for heavy‑load, high‑dynamic multi‑axis automation requiring maximum precision and reliability.

Description

Model Definition

  • DDS2.1: Short form for DDS02.1 series (DIAX02‑compatible servo drive platform)

  • W: Internal cabinet convection cooling (no external fans; utilizes cabinet airflow)

  • 200: 200 A continuous rated current, 400 A short‑term peak current

  • D: Digital servo feedback (DSF: EnDat/HIPERFACE); no analog resolver support

  • Full model: DDS02.1-W200-D (interchangeable with DDS2.1-W200-D)

Technical Specifications

Electrical Parameters

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

  • Control power: 24 V DC (20–28 V DC operating range)

  • Continuous output current: 200 A

  • Peak output current: 400 A (short‑term, < 1 s)

  • Current loop cycle: 125 μs

  • Speed loop cycle: 500 μs

  • Position loop cycle: 2 ms

  • Power dissipation: Approx. 900 W

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

Mechanical & Environmental

  • Cooling: Internal cabinet convection (no external fans; relies on cabinet ventilation)

  • Protection class: IP20 (front panel), IP10 (unit body)

  • Operating temperature: 0 °C to +45 °C (20% derating at 55 °C)

  • Storage temperature: -30 °C to +85 °C

  • Max altitude: 1000 m (35% derating above 1000 m)

  • Dimensions (W×H×D): 150 mm × 408 mm × 180 mm

  • Weight: Approx. 8.5 kg

Interface & Communication Configuration

  • Motor feedback: X4 dual‑channel interface (digital encoder only: EnDat/HIPERFACE; no resolver support)

  • System bus: Shared 300 V DC bus for multi‑axis parallel operation (reduces wiring complexity)

  • Expansion slots: U1–U5 (optional SERCOS, PROFIBUS, CANopen communication modules)

  • Digital I/O: 6 isolated inputs / 3 isolated outputs (for enable, fault, and limit signals)

  • Service port: RS232 (for IndraWorks parameterization, diagnostics, and firmware updates)

Core Functions

  • Three‑loop control (current/speed/position) with high‑precision DSP processing for heavy‑load dynamic response

  • Digital feedback (DSF) for enhanced noise immunity, stability, and high‑resolution positioning

  • Internal convection cooling for flexible cabinet installation (no external cooling infrastructure required)

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

  • Control modes: Torque/speed/position (optimized for heavy‑load CNC main axes and gantry systems)

  • Modular design for easy maintenance, axis expansion, and integration with DIAX02 systems

Application Scenarios

  • Heavy‑load CNC main axes and multi‑axis linkage systems (machine tools, large machining centers)

  • Large textile, printing, and packaging machinery (high synchronization precision for wide‑web processes)

  • Heavy gantry systems, large conveyors, and automated production lines (high torque and dynamic stability)

  • DIAX02 system retrofits (where 200 A continuous current is required for upgraded load capacity)

  • Equipment with limited cabinet space and no external cooling infrastructure (convection‑only operation)

Usage & Maintenance

  • Ensure unobstructed airflow within the control cabinet (minimum 50 mm clearance around the unit) for proper heat dissipation

  • Maintain ambient temperature ≤45 °C to avoid performance derating; monitor heat sink temperature periodically

  • Complete all power, feedback, and bus wiring before applying power; verify tight terminal connections

  • Configure parameters via IndraWorks (match to motor and load requirements; tune control loops for dynamic performance)

  • Clean heat sinks and air passages every 6 months (remove dust/debris to prevent overheating); inspect terminal connections for corrosion

  • Calibrate control loops, feedback signals, and bus communication annually to ensure long‑term stability and precision


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