Bosch Rexroth DDS03.2-W050-B Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS03.2-W050-B Digital Servo Drive

Product Description The DDS03.2-W050-B is a modular digital AC servo drive from the Bosch Rexroth Indramat DDS03.2 series, designed for DIAX03 control systems. It features internal cabinet air cooling, 50 A continuous current, basic B-type interface (no advanced comms/safety card pre-installed), and standard hardware revision. Optimized for high-power multi-axis applications requiring flexible interface expansion and robust basic servo control.

Description

Model Definition

DDS03.2: DIAX03 system servo drive series (firmware v3.x)

W: Internal cabinet air cooling

050: 50 A continuous current, 100 A peak current

B: Basic drive unit (no pre-configured BE/BS interface card; expansion slots available)

(suffix omitted): Hardware revision not specified (standard 01 or 02)

Technical Specifications

Electrical Parameters

DC bus voltage: 300 V DC ±15% (powered by TVD/TVM supplies)

Control supply: 24 V DC (20–28 V DC)

Continuous output current: 50 A

Peak output current: 100 A (short-term)

Current loop: 125 μs

Speed loop: 500 μs

Position loop: 2 ms

Power dissipation: ~200 W (@50 A)

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

Mechanical & Environmental

Cooling: Internal air blower + heatsink

Protection class: IP20 (front), IP10 (overall)

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

Storage temperature: -30 °C to +85 °C

Max altitude: 1000 m (35% derating above)

Dimensions (W×H×D): 80 mm × 408 mm × 180 mm

Weight: ~6.2 kg

Interface and Communication Configuration

Motor feedback: X4 interface (digital encoder + resolver, dual-channel)

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

Communication: B-type base unit (U1 slot for optional comms card: SERCOS/analog/PROFIBUS; U5 for firmware; U2–U4 for I/O/options)

Digital I/O: 6 isolated inputs / 3 isolated outputs (basic configuration)

Service port: RS232 (IndraWorks setup/diagnostics)

Core Functions

Three-loop control (current/speed/position) for high precision

B-type flexibility: Customizable via plug-in cards (SERCOS, analog, safety I/O)

Internal cooling saves cabinet space for dense multi-axis layouts

Comprehensive protection: over/undervoltage, overcurrent, short circuit, overheat, feedback loss

Torque/speed/position control modes

Modular design for easy maintenance/upgrades

Application Scenarios

High-power CNC machine axes (50 A continuous current demand)

Textile/printing/packaging machinery (heavy-load multi-axis sync)

Automated assembly lines & handling robots (high-torque applications)

Automation systems requiring custom interface expansion (SERCOS/analog/safety)

DIAX03 system upgrades with scalable high-power servo control

Usage and Maintenance

Ensure unobstructed cabinet airflow (maintain cooling efficiency for 50 A operation)

Keep ambient ≤45 °C to avoid performance derating

Complete power/feedback/control wiring before power-on

Configure via IndraWorks (match motor/load parameters; install optional comms/safety cards first)

Clean air passages/heatsinks every 6 months; inspect terminals

Calibrate control loops/feedback annually for stability


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