Bosch Rexroth DDS02.1-W050-DA02-01-FW Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS02.1-W050-DA02-01-FW Digital Servo Drive

Product Description The DDS02.1-W050-DA02-01-FW is a compact, modular digital AC servo drive from the Bosch Rexroth (Indramat) DDS02.1 series. It adds a DSM02.1-FW firmware module to the DDS02.1-W050-DA02-01 base unit, featuring cabinet-internal air cooling, 50 A continuous current, DA02 enhanced analog interface, and hardware/firmware revision 01. 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

DA02: Enhanced analog command interface (±10 V) + DSF digital servo feedback (improved shielding and noise immunity vs DA01)

01: Hardware version 01, firmware revision 01

FW: Equipped with DSM02.1-FW software/firmware module (preloaded firmware & parameter storage)

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: DA02 enhanced analog (±10 V speed/torque command, U1 slot; better EMC performance than DA01)

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–U5 for communication/functional modules

Service port: RS232 (IndraWorks parameterization)

Firmware module: DSM02.1-FW (stores firmware, parameters, and enables quick replacement/backup)

Core Functions

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

DA02 enhanced analog interface: Improved noise filtering, higher signal stability, and stronger anti-interference capability compared to DA01

DSM02.1-FW firmware module: Preconfigured firmware, supports parameter backup/restore, simplifies drive replacement

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

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 (especially in high-noise environments)

Precision test benches and motion simulators

Applications requiring quick drive replacement with preloaded parameters

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

Configure parameters via IndraWorks (or restore from DSM02.1-FW backup)

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

Calibrate control loops every 2 years

When replacing, transfer DSM02.1-FW to the new unit for instant parameter recovery


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