Bosch Rexroth DDS2.1‑A100 Digital Servo Drive
May 29, 2026

Bosch Rexroth DDS2.1‑A100 Digital Servo Drive

Product Description The DDS2.1‑A100 (full typ. DDS02.1‑A100) is a modular digital AC servo drive for the DIAX02 system (Rexroth Indramat). It delivers 100 A continuous / 200 A peak current, uses external cabinet air cooling, and supports high‑power synchronous/linear motors for machine tools and multi‑axis automation.

Description

Model Definition

DDS2.1: DIAX02 drive series (firmware v2.x)

A: External air cooling (control cabinet airflow)

100: 100 A continuous, 200 A peak current

Technical Specifications

Electrical

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

Control supply: 24 V DC (20–28 V DC)

Continuous current: 100 A

Peak current: 200 A (short‑term)

Current loop: 125 μs

Speed loop: 500 μs

Position loop: 2 ms

Power dissipation: ~400 W (@100 A)

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

Mechanical & Environmental

Cooling: External blower + heatsink (cabinet air)

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): 120 mm × 408 mm × 180 mm

Weight: ~8.5 kg

Interface and Communication Configuration

Motor feedback: X4 (digital servo encoder + resolver, dual‑channel)

System bus: Shared 300 V DC bus for multi‑axis parallel

Communication: Base unit; options include SERCOS (DS24/37), analog (DA01/02), or resolver (DL01) cards

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

Service port: RS232 (IndraWorks setup/diagnostics)

Expansion slots: U1–U5 (for communication, I/O, or firmware modules)

Core Functions

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

External cooling for high‑power, continuous‑duty operation

Modular card‑based expansion for SERCOS, analog, or resolver interfaces

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

Torque/speed/position control modes

DIAX02 firmware compatible (FW option available)

Application Scenarios

High‑power CNC machine main/spindle axes

Heavy‑duty textile, printing, and packaging machinery

Multi‑axis handling robots and automated assembly lines

High‑torque motion requiring 100 A continuous current

DIAX02 system upgrades/replacements

Usage and Maintenance

Ensure cabinet airflow ≥ 300 m³/h for external cooling

Keep ambient ≤45 °C to avoid derating

Complete power/feedback/control wiring before power‑on

Configure via IndraWorks (match motor/load parameters)

Clean heatsink/air passages every 6 months; inspect terminals

Calibrate control loops/feedback annually


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