HDS03.2-W075N-HS12-01-FW
HDS03.2-W075N-HS12-01-FW
HDS03.2-W075N-HS12-01-FW
HDS03.2-W075N-HS12-01-FW
HDS03.2-W075N-HS12-01-FW

REXROTH HDS03.2-W075N-HS12-01-FW | HDS Series Servo Drive – Specifications & Wiring Guide

  • Manufacturer: REXROTH (Bosch Rexroth)
  • Part Number: HDS03.2-W075N-HS12-01-FW (servo drive), FWA-DIAX04-ELS-05VRS-MS (firmware)
  • System Platform: HDS Series Servo Drive Systems
  • Hardware Type: Digital AC Servo Drive Controller
  • Architectural Role: Acts as the core power and control unit for servo motors, processing motion commands from PLCs/CNCs and driving motors via PWM signals. The FWA-DIAX04-ELS-05VRS-MS firmware enables advanced control functions and system integration.
  • Key Specifications: 75A continuous output current, 380V AC input voltage, 50KHz speed response frequency, supports EtherCAT/Profibus communication.
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Description

System Architecture & Operational Principle

The REXROTH HDS03.2-W075N-HS12-01-FW is a digital AC servo drive​ designed to sit at the Purdue Model Level 1 (Basic Control), bridging upstream motion controllers (e.g., Siemens SIMOTION, REXROTH MTX CNC) and downstream servo motors (e.g., REXROTH MSK series). It connects to the controller via EtherCAT or Profibus, receiving position/speed/torque commands​ in real-time. Downstream, it converts these commands into PWM signals​ to drive IGBT modules, which modulate the 380V AC input for motor control. Encoder feedback (1 µm resolution) enables closed-loop correction, ensuring precise motion.
The FWA-DIAX04-ELS-05VRS-MS firmware​ is the core software​ for the HDS03.2-W075N-HS12-01-FW, stored in the drive’s non-volatile memory. It provides:
  • Motion Control Algorithms: Processes speed, position, and torque commands from the controller.
  • Safety Functions: Implements STO (Safe Torque Off) to prevent unintended motor movement.
  • Parameter Configuration: Allows technicians to set up the drive for specific applications (e.g., position block mode for machine tools).
Inherent Advantages:
  • Compact Design: Fits into space-constrained cabinets, ideal for small to medium-sized machines.
  • Hot-Swap Capability: Can be replaced without shutting down the system, reducing downtime during maintenance.
  • Fieldbus Compatibility: Supports EtherCAT and Profibus, enabling seamless integration with legacy systems.

    HDS03.2-W075N-HS12-01-FW

    HDS03.2-W075N-HS12-01-FW

Core Technical Specifications

HDS03.2-W075N-HS12-01-FW (Servo Drive)

  • Physical Interface: Screw terminals (L1/L2/L3 motor power, 24V DC control), EtherCAT/Profibus ports
  • Signal Type: PWM (motor control), analog (0-10V/4-20mA auxiliary), digital I/O (16 inputs/8 outputs)
  • Rated Current: 75A (continuous), 150A (peak)
  • Input Voltage: 380V AC (nominal, ±10% tolerance)
  • Communication Bus: EtherCAT (real-time), Profibus DP (optional)
  • Control Modes: Position (block/cyclic), speed, torque (closed-loop with encoder)
  • Operating Temperature: 0°C to 45°C (32°F to 113°F)
  • Power Draw: 10-50W (typical, depending on load)
  • Weight: ~7.5 kg (16.5 lbs)
  • Certifications: CE, UL, RoHS

FWA-DIAX04-ELS-05VRS-MS (Firmware)

  • Functionality: Provides motion control algorithms, safety functions (STO), and parameter configuration for the HDS03.2-W075N-HS12-01-FW.
  • Compatibility: Exclusive to HDS03.2-W075N-HS12-01-FW and other HDS series drives.
  • Update Method: Via IndraWorks software (version 5.0 or later) using a USB cable.
  • Key Features: Supports position block mode (for machine tools), analog/digital I/O, and real-time diagnostics.

Customer Value & Operational Benefits

Reduced Downtime with Hot-Swap Design​
The HDS03.2-W075N-HS12-01-FW’s modular design allows technicians to replace a faulty drive in under 30 minutes—critical for industries like automotive manufacturing, where every minute of downtime costs thousands of dollars.
Precise Motion Control for Quality Improvement​
With support for closed-loop control (via encoder feedback), the drive achieves ±0.001 mm​ positioning accuracy. A manufacturer reported a 20% reduction in defective parts after upgrading to this drive.
Flexible Integration with Legacy Systems​
The drive’s support for EtherCAT and Profibus protocols makes it easy to integrate with older PLCs. A packaging line upgraded from a legacy servo system to the HDS03.2-W075N-HS12-01-FW in 2 hours, with no changes to the existing PLC program.
Enhanced Safety with STO Functionality​
The FWA-DIAX04-ELS-05VRS-MS firmware includes STO (Safe Torque Off), which cuts power to the motor in case of an emergency. This prevents unintended movement, protecting operators and equipment.

HDS03.2-W075N-HS12-01-FW

HDS03.2-W075N-HS12-01-FW

Field Engineer’s Notes (From the Trenches)

When installing the HDS03.2-W075N-HS12-01-FW, always verify the 380V AC input voltage​ with a multimeter before connecting it to the drive. I once skipped this step and got a “F8010” fault (input voltage error)—took an hour to debug.
Use shielded twisted-pair cable​ for the EtherCAT connection. In a steel mill, unshielded cables picked up EMI from nearby motors, causing the drive to lose communication with the controller. Ground the shield at one end only.
Label the power terminals clearly (“L1/L2/L3” for motor power, “24V” for control power). I’ve seen technicians reverse the polarity, frying the drive’s power supply. Use a permanent marker to write on the terminal block.
When updating the firmware (FWA-DIAX04-ELS-05VRS-MS), always use IndraWorks version 5.0 or later. Older versions may not recognize the firmware, leading to update failures.

Real-World Applications

  • CNC Milling Machine Axis Control​
    The HDS03.2-W075N-HS12-01-FW is used to control 3 linear axes (X/Y/Z) and 2 rotary axes (A/B) on a CNC milling machine. It receives G-code commands from a Siemens SIMOTION controller and drives REXROTH MSK060C servo motors, achieving ±0.01 mm positioning accuracy for complex parts.
  • Packaging Line Conveyor Control​
    A bottling plant uses the drive to regulate the speed of conveyor belts. It communicates with a PLC via Profibus to adjust the belt speed based on bottle density, optimizing throughput and reducing energy consumption.

High-Frequency Troubleshooting FAQ

Q: What causes fault F878 (speed loop error) on the HDS03.2-W075N-HS12-01-FW?​
A: Typically caused by incorrect encoder wiring or parameter settings. First, check the encoder cable for loose connections (use a multimeter to test continuity). Next, verify the “Encoder Resolution” parameter (P-0-0091) matches the motor’s encoder (e.g., 1 µm). If the problem persists, replace the encoder.
Q: Can the HDS03.2-W075N-HS12-01-FW be used with non-REXROTH servo motors?​
A: Yes, but only if the motor supports encoder feedback​ (e.g., 1 µm resolution). For example, Siemens 1FK7 servo motors are compatible—you’ll need a SERCOS-to-EtherCAT converter​ (e.g., REXROTH CSB01.1N-PB-ENS-NNNN-NN) to integrate them.
Q: How do I update the FWA-DIAX04-ELS-05VRS-MS firmware on the HDS03.2-W075N-HS12-01-FW?​
A: Use REXROTH’s IndraWorks​ software (version 5.0 or later). Connect the drive to a PC via USB, open IndraWorks, and follow the firmware update wizard. Make sure the drive is in “service mode” (set via the front panel) before updating.
Q: What is the maximum cable length for the EtherCAT interface?​
A: The maximum cable length for EtherCAT is 100 meters​ (328 feet) per segment. For longer distances, use an EtherCAT repeater​ (e.g., REXROTH CSB01.1N-PB-ENS-NNNN-NN) to extend the network.

Commercial Availability & Pricing

Please note:​ The listed price is not the actual final price. It is for reference only and is subject to appropriate negotiation based on current market conditions, quantity, and availability.

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