Bosch Rexroth DDS02.1-A100-DS03-02 Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS02.1-A100-DS03-02 Digital Servo Drive

Product Description The DDS02.1-A100-DS03-02 is a high-performance modular digital AC servo drive from Bosch Rexroth (Indramat) DDS02.1 series, designed for heavy-duty industrial motion control. It features external air cooling, 100 A continuous current rating, and an enhanced SERCOS interface with advanced digital feedback, delivering superior dynamic response and precision for demanding automation applications.

Description

Model Definition

DDS02.1: DIAX02 system, servo drive series 02.1 (2nd generation, version 1)

A: External air cooling (heat sink outside cabinet, "cold technology")

100: 100 A continuous rated current

DS03: Enhanced SERCOS digital interface + high-resolution DSF digital servo feedback (upgrade from DS01)

02: Hardware version 02

Technical Specifications

Electrical Parameters

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

Control power supply: 24 V DC (20–28 V DC)

Continuous output current: 100 A

Peak output current: 200 A (short-term, 5 s max)

Current loop cycle: 62.5 μs

Speed loop cycle: 250 μs

Position loop cycle: 1 ms

Motor feedback: High-resolution DSF digital servo feedback (DS03 enhanced)

Control cabinet power consumption: 97 W

Mechanical & Environmental

Cooling method: External air cooling (required vertical installation)

Protection class: IP20

Operating temperature: 0 °C to +45 °C (derating to 55 °C)

Storage temperature: -30 °C to +85 °C

Maximum altitude: 1000 m (derating above 1000 m)

Weight: Approx. 11 kg

Dimensions (W×H×D): 120 mm × 450 mm × 350 mm

Interface and Communication Configuration

Control interface: SERCOS III real-time digital bus (DS03, enhanced)

Motor feedback: High-resolution DSF digital servo feedback (16-bit resolution)

System bus: Shared 300 V DC bus for multi-axis synchronization

Digital I/O: 8×digital input, 4×digital output (enable, fault, limits, brake)

Expansion slots: U1–U4 for communication/feedback modules

Service port: RS232 (X3) for IndraWorks configuration

Analog interface: ±10 V speed/torque command (backup)

Core Functions

Three-loop control (current/speed/position) with ultra-fast dynamic response

Enhanced SERCOS interface for sub-microsecond multi-axis synchronization

High-resolution feedback for ±1 arcsec positioning accuracy

Modular design for flexible axis configuration and easy maintenance

Comprehensive protection: Overvoltage, undervoltage, short circuit, overtemperature, feedback loss, motor overload

Supports torque, speed, and position control modes (switchable via software)

DS03 upgrade: Faster communication, higher feedback resolution, improved noise immunity

Application Scenarios

Heavy-duty CNC machine tools (5-axis mills, gantry routers, large lathes)

High-precision industrial robots and multi-axis synchronous lines

Injection molding machines, metal forming equipment, and die-casting systems

Dynamic test benches (engine, vibration, simulation)

Printing/packaging, textile, and paper machinery with tight registration control

High-speed metalworking and semiconductor manufacturing equipment

Usage and Maintenance

Install vertically with unobstructed external airflow (min. 100 mm clearance)

Operate at ≤45 °C ambient; avoid direct sunlight and dust exposure

Wiring sequence: DC bus → 24 V control → motor power → feedback → SERCOS

Commission via IndraWorks software (firmware preloaded; DS03 parameters optimized)

Maintenance: Clean heat sink every 6 months; check terminals annually; calibrate loops every 2 years

DS03 note: Compatible with DS01 systems (backward compatible); requires IndraWorks V10+ for full functionality


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