Bosch Rexroth DDS03.1-W030-DA11-01-FW Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS03.1-W030-DA11-01-FW Digital Servo Drive

Product Description The DDS03.1-W030-DA11-01-FW is a 30 A peak / 10 A continuous modular digital AC servo drive of the Bosch Rexroth Indramat DDS03.1 series for DIAX02 systems. It features internal cabinet air cooling, digital servo feedback, a DA11 analog interface module, and factory-loaded firmware (FW) for high-precision mid-power automation applications.

Description

Model Definition

DDS03.1: Servo drive series 03.1 for DIAX02

W: Internal cabinet air cooling

030: 30 A peak current (10 A continuous)

DA11: High-resolution analog interface module (±10 V, 16-bit)

01: Hardware revision 1

FW: Factory-integrated firmware

MPN: R911260126 (base unit) + DA11 module

Technical Specifications

Electrical Parameters

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

Control power: 24 V DC (20–28 V DC)

Continuous output current: 10 A

Peak output current: 30 A (short-term)

Current loop cycle: 125 μs

Speed loop cycle: 500 μs

Position loop cycle: 2 ms

Power dissipation: Approx. 110 W

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

Mechanical & Environmental Parameters

Cooling method: Internal cabinet air cooling

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

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 at 5000 m)

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

Weight: Approx. 5.5 kg

Interface and Communication Configuration

Feedback: Digital servo (resolver + digital encoder, standard)

System bus: 300 V DC shared bus for multi-axis systems

DA11 Analog Interface: ±10 V speed/torque command (16-bit resolution), ±10 V speed monitor output

Digital I/O: 6 inputs / 3 outputs (enable, fault, limit switches)

Expansion slots: U1–U2 (DA11 occupies one slot)

Service port: RS232 (IndraWorks parameterization/diagnostics)

Core Functions

Current/speed/position three-loop control for high-precision motion

Internal air cooling saves cabinet space for dense layouts

Compact 60 mm width enables multi-axis integration

Digital feedback ensures high-resolution positioning and fast error detection

DA11 high-resolution analog interface for precise analog command control

Comprehensive protection: overvoltage, undervoltage, overcurrent, short circuit, overheating, feedback loss

Supports torque/speed/position control modes

Application Scenarios

CNC machine tools (mid-power axes with high-resolution analog control)

Printing/textile/packaging machinery

Robotics/handling systems with 10 A continuous current

High-precision analog-controlled automation retrofits

Light-duty spindle drives

Usage and Maintenance

Install with cabinet airflow ≥ 100 m³/h to ensure proper cooling

Operate below 45 °C to avoid performance derating

Configure DA11 analog range (±10 V) and feedback type via IndraWorks

Clean internal air passages every 6 months to prevent dust buildup

Calibrate control loops and feedback system annually


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