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Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Bosch Rexroth Indramat |
| Material Number | R911190008 |
| Type Code | HDS03.2-W075N-HS12-01-FW |
| Product Family | DIAX04 |
| Drive Series | HDS, Version 2 |
| Product Type | Digital servo drive controller |
| Rated Current | 75 A |
| Peak Current | 75 A; verify application-specific peak rating |
| Continuous Current | 40 A at 4 kHz / 30 A at 8 kHz |
| DC Input Voltage | 530–670 V DC |
| Input Frequency | 50–60 Hz equivalent supply specification |
| Maximum Input Current | 37 A |
| Maximum Output Current | 40 A |
| Maximum Output Voltage | Up to 500 V |
| Output Frequency | Application-dependent; verify motor configuration |
| Command Communication | SERCOS interface |
| Analog Interface | Analog interface for operating-mode transitions |
| Control Voltage | Verify exact control-voltage requirement from the HDS03.2 manual |
| Cooling | Built-in internal air blower |
| Power Dissipation | Approximately 220 W |
| Protection Category | IP10 |
| Configuration Software | DRIVE TOP |
| Main Connectors | X3 and X6 |
| Firmware | Ordered separately |
| Weight | Approximately 11 kg |
| Mounting Plate | Not included |
| Shield Connection Cable | Not included |
| Accessories | Hose clamps included; verify seller scope of supply |
The HDS03.2-W075N-HS12-01-FW is a Bosch Rexroth Indramat DIAX04 HDS version-2 servo drive controller with a 75 A rated-current classification and SERCOS command interface.
Published technical data lists 530–670 V DC input, 37 A maximum input current, 40 A maximum output current, internal blower cooling, IP10 protection, DRIVE TOP configuration, and approximately 11 kg mass.
Product Introduction
Bosch Rexroth HDS03.2-W075N-HS12-01-FW, material number R911190008, is a DIAX04 HDS version-2 digital servo drive controller for high-current industrial motion systems. It provides 75 A rated current, SERCOS command communication, an analog interface, and internal blower cooling.
This controller is intended for cabinet-mounted servo applications using compatible Bosch Rexroth motors, power supplies, feedback devices, and firmware. Verify the DC-bus arrangement, motor data, SERCOS fiber network, firmware, control voltage, and X3/X6 wiring before commissioning.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No display or control response | Missing control voltage, blown fuse, or loose control connector | ✅ High | Measure the specified control voltage at the drive terminals and inspect control wiring | Check the control supply before replacing the drive |
| DC bus does not charge | Missing input phases, precharge fault, fuse failure, or supply problem | ✅ High | Measure the DC bus and incoming supply according to the HDS wiring diagram | Isolate the supply and precharge circuit before condemning the controller |
| Drive reports overcurrent | Motor short, incorrect motor data, mechanical jam, or acceleration too aggressive | ✅ High | Review the diagnostic code and test motor cables for phase-to-phase and phase-to-ground faults | Check the motor, cable, and load before replacing the HDS03.2 |
| Drive shuts down immediately | Internal warning, overvoltage, undervoltage, or hardware protection trip | ✅ High | Read the diagnostic display and error memory; record the exact fault number | Correct the external cause; do not repeatedly reset a power-stage fault |
| SERCOS communication is absent | Fiber break, incorrect ring order, incompatible firmware, or controller fault | ✅ High | Inspect SERCOS transmit/receive fibers, ring continuity, and node diagnostics | Replace damaged fiber or correct the ring before replacing the drive |
| Motor will not enable | Drive inhibit, missing controller enable, active fault, or parameter lock | ✅ High | Check enable status, error memory, controller command, and parameter access | Clear the inhibit cause and verify the configured axis data |
| Position error increases | Feedback fault, incorrect motor data, tuning problem, or mechanical backlash | ✅ High | Compare commanded and actual position; inspect feedback wiring and motor data | Verify encoder feedback and parameters before replacing the drive |
| Drive overheats | Blower failure, blocked airflow, cabinet temperature, or high duty cycle | ✅ High | Confirm blower operation and measure cabinet temperature near the drive | Restore cooling and check load profile before replacement |
| Brake does not release | Incorrect brake wiring, failed brake coil, or missing brake control voltage | ✅ Possible | Measure brake voltage at the motor connector using the approved wiring diagram | Secure vertical loads and repair the brake circuit before enabling motion |
| Replacement fails to initialize | Firmware mismatch, incompatible motor data, or parameter incompatibility | ✅ High | Compare firmware identification, axis parameters, and motor data with the original unit | Confirm firmware and restore a validated parameter backup |
| Drive trips under sustained load | Continuous current exceeds 40 A at 4 kHz or 30 A at 8 kHz, or thermal limit reached | ✅ High | Trend current, switching frequency, temperature, and duty cycle | Reduce load or revise sizing; do not use the 75 A label as a continuous rating |
| Cabinet mounting is incomplete | Missing mounting plate, shield hardware, or hose clamp | ⚠️ Possible | Compare the replacement hardware with the original installation | Obtain the required mounting and shield components before commissioning |
Critical warning: This controller works with a hazardous high-voltage DC bus. Follow lockout procedures and verify the bus has discharged before opening the cabinet. Do not megohm-test connected electronic circuits, SERCOS equipment, or motor feedback devices without following Bosch Rexroth’s approved test procedure.
HDS03.2-W075N-HS12-01-FW R911190008
HDS03.2-W075N-HS12-01-FW R911190008
Frequently Asked Questions (FAQ)
What is Bosch Rexroth HDS03.2-W075N-HS12-01-FW?
It is a Bosch Rexroth Indramat DIAX04 HDS version-2 servo drive controller. The corresponding material number is R911190008, and the controller carries a 75 A rated-current classification.
What does the 75 A rating mean?
The 75 A value identifies the controller’s rated-current class. Published data also lists continuous-current values of 40 A at 4 kHz and 30 A at 8 kHz. Select the drive using the applicable continuous, peak, thermal, motor, and duty-cycle ratings—not the 75 A value alone.
What communication interface does this drive use?
The command interface is SERCOS. The analog interface supports operating-mode transitions through the control-voltage input. This drive is not automatically interchangeable with an Ethernet, PROFIBUS, or CANopen version.
Is firmware included?
Do not assume firmware is included. Published product data states that firmware is ordered separately. Confirm the installed firmware identifier and required motor-control functions before purchasing a replacement.
Can I replace an .1 unit with .2?
Not without verifying the complete system configuration. .2 is version 2, and compatibility depends on the motor, firmware, SERCOS ring, controller, parameters, wiring, and machine software. Compare the full type code and system documentation before substitution.
What should I back up before removing the old drive?
Record the drive type plate, firmware identification, motor model, peak-current setting, maximum-velocity setting, axis parameters, SERCOS address, error history, and all connector positions. The published configuration procedure specifically references DRIVE TOP and motor parameters such as peak current and maximum velocity.
Is the unit new or refurbished?
The part number does not establish condition. State the actual status as New Original, New Surplus, or Refurbished (tested). For refurbished stock, document control-voltage startup, blower operation, diagnostic display, SERCOS communication, DC-bus behavior, output-stage testing, and a loaded motor test using compatible equipment.
