Bosch Rexroth DDS02.1-W050-DA01-01-FW Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS02.1-W050-DA01-01-FW Digital Servo Drive

Product Description The DDS02.1-W050-DA01-01-FW is a compact, modular digital AC servo drive from the Bosch Rexroth (Indramat) DDS02.1 series. It features cabinet-internal air cooling, 50 A continuous current, analog ±10 V command interface (DA01), hardware/firmware revision 01, and a separately orderable firmware module (FW). Designed for cabinet mounting, it delivers high-precision motion control for medium-to-high power single- or multi-axis automation systems.

Description

Model Definition

DDS02.1: DIAX02 system servo drive, series 02.1

W: Cabinet-internal air cooling

050: 50 A continuous rated current

DA01: Analog command interface (±10 V) + DSF digital servo feedback

01: Hardware version 01, firmware revision 01

FW: Firmware module (DSM02.1-FW) ordered separately, installed in U5 slot

Technical Specifications

Electrical Parameters

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

Control power: 24 V DC (20–28 V DC), ~1.1 A

Continuous output current: 50 A

Peak output current: 100 A (short-term)

Current loop cycle: 62.5 μs

Speed loop cycle: 250 μs

Position loop cycle: 1 ms

Motor feedback: DSF digital servo feedback (for MDD/MKD motors)

Power dissipation: ~150 W

Mechanical & Environmental Parameters

Cooling: Cabinet-internal air cooling (vertical mounting required)

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

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

Storage temperature: -30 °C to +85 °C

Max altitude: 1000 m (derate above)

Weight: ~8.5 kg

Dimensions (W×H×D): 110 mm × 390 mm × 310 mm

Interface and Communication Configuration

Control interface: DA01 analog (±10 V speed/torque command, U1 slot)

Motor feedback: DSF digital servo feedback (MDD/MKD synchronous motors)

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

Digital I/O: 8 inputs / 4 outputs (enable, fault, limits, brake control)

Expansion slots: U1–U4 for communication/functional modules; U5 reserved for DSM02.1-FW firmware module

Service port: RS232 (IndraWorks parameterization)

Core Functions

Current/speed/position three-loop control for fast dynamics and high accuracy

Analog ±10 V command for seamless integration with analog controllers/PLCs

Cabinet-internal cooling saves space in compact control cabinets

Modular design enables flexible expansion and easy maintenance

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

Supports torque, speed, and position control modes

FW suffix: Firmware is a separate module; allows version control and easy replacement without reparameterization

Application Scenarios

Medium-to-large CNC machine tools and machining centers

Multi-axis synchronous production lines and handling robots

Printing, textile, and packaging machinery

General industrial automation with analog control systems

Precision test benches and motion simulators

Usage and Maintenance

Mount vertically and ensure adequate cabinet ventilation

Maintain ambient temperature ≤45 °C during operation

Complete DC bus, control power, motor, feedback, and analog wiring before commissioning

Order and install matching DSM02.1-FW firmware module in U5 slot prior to use

Configure parameters via IndraWorks

Clean internal fan/heat sink every 6 months; inspect terminals periodically

Calibrate control loops every 2 years


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