Bosch Rexroth DDS2.1-W025-DS29-01 Digital Servo Drive
Description
Model Definition
DDS2.1: Servo drive series compatible with DIAX02 system
W: Internal cabinet convection air cooling
025: 25 A continuous rated current, 50 A short-term peak current
DS29: Specialized SERCOS communication interface
01: Optimized hardware revision for enhanced stability and compatibility
Technical Specifications
Electrical Parameters
DC bus voltage: 300 V DC ±15%, powered by TVD or TVM power units
Control power supply: 24 V DC, operating range 20 V DC to 28 V DC
Continuous output current: 25 A
Peak output current: 50 A for short-time operation
Current loop cycle: 125 μs
Speed loop cycle: 500 μs
Position loop cycle: 2 ms
Power dissipation: Approximately 110 W
Compatible motors: MDD, MKD synchronous servo motors, LAR, LAF linear motors, 2AD series motors
Mechanical & Environmental Parameters
Cooling method: Internal cabinet convection air cooling
Protection class: IP20 for front panel, IP10 for the whole unit
Operating temperature: 0 °C to +45 °C, 20% performance derating at 55 °C
Storage temperature: -30 °C to +85 °C
Maximum installation altitude: 1000 m, 35% performance derating above 1000 m
Dimensions (W×H×D): 60 mm × 408 mm × 180 mm
Weight: Approximately 5.5 kg
Interface and Communication Configuration
Motor feedback: X4 dual-channel interface supporting digital encoder and resolver signals
System bus: Shared 300 V DC bus for multi-axis parallel connection
Communication: DS29 SERCOS interface for real-time data transmission and multi-axis synchronous control
Digital I/O: 6 isolated inputs and 3 isolated outputs for basic control signals
Service port: RS232 interface for parameter setting and fault diagnosis via IndraWorks
Expansion slots: U1 to U5 for installing additional I/O and functional modules
Core Functions
Current, speed and position three-loop control ensures stable and high-precision motion performance.
DS29 SERCOS interface features strong anti-interference and stable data transmission.
01 optimized hardware revision improves overall operational reliability.
Compact internal cooling structure adapts to narrow cabinet installation space.
Complete protection against overvoltage, undervoltage, overcurrent, short circuit, overheating and feedback signal loss.
Supports torque, speed and position control modes to meet various working conditions.
Modular structure facilitates daily maintenance and function expansion.
Application Scenarios
Multi-axis linkage auxiliary axes of CNC machine tools
Textile, printing and packaging machinery with synchronous operation requirements
Medium-sized automated assembly lines and conveying equipment
DIAX02 system upgrade projects configured with DS29 SERCOS bus
Automation equipment with limited cabinet space and high communication stability requirements
Usage and Maintenance
Maintain smooth air circulation inside the cabinet to guarantee heat dissipation effect.
Keep ambient temperature below 45 °C to prevent performance decline.
Complete wiring of power, feedback, bus and control circuits before power-on.
Set parameters and configure bus network via IndraWorks according to actual application.
Clean heat dissipation components and air passages every six months, and inspect terminal connections regularly.
Calibrate control loops, feedback signals and bus communication status once a year to maintain long-term stable operation.
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