Bosch Rexroth DDS2.1-W050-DS01-01 Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS2.1-W050-DS01-01 Digital Servo Drive

Product Description The DDS2.1-W050-DS01-01 is a modular digital AC servo drive from the DDS02.1 series for DIAX02 control systems. It uses internal cabinet convection cooling, rated at 50 A continuous current and 100 A short-term peak current. Equipped with DS01 SERCOS communication interface and 01 optimized hardware revision, it is suitable for medium-load multi-axis synchronous automation equipment with high stability requirements.

Description

Model Definition

DDS2.1: Servo drive series compatible with DIAX02 system

W: Internal cabinet convection air cooling

050: 50 A continuous rated current, 100 A short-term peak current

DS01: Standard SERCOS fiber-optic communication interface

01: Optimized hardware revision for enhanced operation stability and anti-interference capability

Technical Specifications

Electrical Parameters

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

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

Continuous output current: 50 A

Peak output current: 100 A for short-time operation

Current loop cycle: 125 μs

Speed loop cycle: 500 μs

Position loop cycle: 2 ms

Power dissipation: Approximately 220 W

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

Mechanical & Environmental Parameters

Cooling method: Internal cabinet convection 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: X4 dual-channel interface supporting digital encoder and resolver signals

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

Communication: DS01 SERCOS interface for high-speed real-time data transmission and multi-axis synchronization

Digital I/O: 6 isolated inputs and 3 isolated outputs for basic control signals

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

Expansion slots: U1 to U5 for installing additional I/O and functional modules

Core Functions

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

DS01 SERCOS bus realizes fast data exchange and precise synchronization of multiple axes.

The optimized 01 hardware revision improves overall reliability and signal stability.

Compact internal cooling structure fits narrow cabinet installation.

Complete protection against overvoltage, undervoltage, overcurrent, short circuit, overheating and feedback signal loss.

Supports torque, speed and position control modes to meet various working demands.

Modular design facilitates routine maintenance and function expansion.

Application Scenarios

Medium-load main and auxiliary axes of CNC machine tools with multi-axis linkage

Textile, printing and packaging machinery requiring synchronous operation

Automated assembly lines, gantry systems and conveying equipment

DIAX02 system upgrade projects configured with DS01 SERCOS bus

Automation equipment with limited cabinet space and strict requirements for communication stability

Usage and Maintenance

Maintain unobstructed air circulation inside the cabinet to ensure heat dissipation.

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

Complete wiring of power, feedback, bus and control circuits before power-on.

Set parameters and configure bus network via IndraWorks according to actual operating conditions.

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

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


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