Bosch Rexroth DDS03.1-W050-DS01-02 Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS03.1-W050-DS01-02 Digital Servo Drive

Product Description The DDS03.1-W050-DS01-02 is a modular digital AC servo drive of Bosch Rexroth Indramat DDS03.1 series, matching DIAX02 control systems. It adopts internal cabinet air cooling and is equipped with DS01 SERCOS fiber-optic communication module and hardware revision 02. With 20 A continuous current and 50 A peak current, it is suitable for medium-power multi-axis equipment that requires high-speed real-time bus communication.

Description

Model Definition

DDS03.1: Servo drive series for DIAX02 system

W: Internal cabinet air cooling

050: 50 A short-term peak current, 20 A continuous rated current

DS01: SERCOS fiber-optic communication module

02: Hardware revision 02

Technical Specifications

Electrical Parameters

DC bus voltage: 300 V DC ±15%, supplied by TVD or TVM power units

Control power: 24 V DC, operating range 20 V DC to 28 V DC

Continuous output current: 20 A

Peak output current: 50 A for short-time operation

Current loop cycle: 125 μs

Speed loop cycle: 500 μs

Position loop cycle: 2 ms

Power dissipation: Approximately 140 W

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

Mechanical & Environmental Parameters

Cooling method: Internal cabinet air cooling

Protection class: IP20 for front panel, IP10 for the whole unit

Operating temperature: 0 °C to +45 °C, 20% performance derating at 55 °C

Storage temperature: -30 °C to +85 °C

Maximum installation altitude: 1000 m, 35% performance derating above 1000 m

Dimensions (W×H×D): 60 mm × 408 mm × 180 mm

Weight: Approximately 5.5 kg

Interface and Communication Configuration

Motor feedback: Dual-channel interface supporting digital encoder and resolver signals

System bus: Shared 300 V DC bus for multi-axis parallel connection

Communication interface: DS01 SERCOS fiber-optic module for high-speed real-time data transmission

Digital I/O: 6 inputs and 3 outputs for enable, fault alarm and limit signal control

Service port: RS232 interface for parameter configuration and fault diagnosis via IndraWorks

Expansion slots: Reserved slots for additional functional modules

Core Functions

Current, speed and position three-loop control ensures stable and accurate motion performance.

DS01 SERCOS fiber-optic communication features strong anti-interference and fast response for synchronous control of multiple axes.

Internal cooling structure fits compact cabinet layout and dense installation.

Built-in comprehensive protection against overvoltage, undervoltage, overcurrent, short circuit, overheating and feedback signal loss.

Supports torque, speed and position control modes to meet diverse motion demands.

Modular structure facilitates on-site maintenance and function expansion.

Application Scenarios

Medium-power axes of high-precision CNC machine tools

Textile, printing and packaging machinery with multi-axis synchronous motion

Automated assembly lines and handling robots using SERCOS bus

Industrial automation equipment requiring high anti-interference communication

Servo system renovation projects based on SERCOS protocol

Usage and Maintenance

Guarantee sufficient air circulation inside the cabinet after installation to ensure heat dissipation.

Keep ambient temperature below 45 °C to prevent performance decline.

Complete wiring of power circuit, feedback circuit and fiber-optic lines before power-on commissioning.

Set operating parameters through IndraWorks according to actual working conditions.

Clean internal air passages and heat dissipation components every six months and inspect terminal connections regularly.

Calibrate control loops and feedback signals once a year to maintain long-term stable operation.


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