Bosch Rexroth HDS03.2-W100N-HS12-01-FW Replacement Solution

Product Overview

Bosch Rexroth HDS03.2-W100N-HS12-01-FW Replacement Solution: Seamless Transition from Legacy DIAX04 Servo Systems

The Bosch Rexroth HDS03.2-W100N-HS12-01-FW paired with firmware FWA-DIAX04-SSE-02V56-MS is a high-performance AC servo drive from the DIAX04 series, designed for demanding motion control applications in CNC machining, injection molding, printing, and industrial automation. As legacy DIAX04 installations age and original units become increasingly difficult to source, plant engineers and procurement teams face mounting pressure to find verified, compatible replacements that minimize retrofit risk and unplanned downtime.

This listing provides a fully tested, ready-to-ship replacement unit for the HDS03.2-W100N-HS12-01-FW, complete with the FWA-DIAX04-SSE-02V56-MS firmware module. Each unit undergoes pre-shipment functional verification to confirm drive initialization, encoder feedback processing, and communication handshake integrity before leaving our facility.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful DIAX04 servo drive replacement rarely involves a single component. In most retrofit scenarios, the HDS03.2-W100N-HS12-01-FW operates as part of a coordinated drive system. During migration, engineers commonly address the following adjacent components to ensure system-wide compatibility:

The HVR02.2-W018N or HVE02.2-W018N power supply modules feed the DC bus shared across multiple HDS axis drives. Verifying that the existing supply module’s continuous output current rating covers the updated axis configuration is a critical first step before commissioning the replacement drive. In multi-axis cabinets, the HDS04.2 or HDS05.2 drives on adjacent axes should be inspected for firmware version alignment, as mixed FWA-DIAX04 firmware revisions can cause SERCOS ring initialization failures.

The FWA-DIAX04-SSE-02V56-MS firmware module itself is a plug-in memory card that stores drive parameters and motion profiles. When replacing the drive chassis, the firmware card from the failed unit can often be transferred directly to the replacement drive, preserving axis-specific tuning data, motor parameters, and application-specific configurations — eliminating the need for full recommissioning from scratch. However, if the original firmware card is damaged, a pre-loaded replacement card is included with this unit.

Wiring compatibility is straightforward: the X1 power connector, X2 motor power output, X3/X4 encoder feedback connectors, and X8 SERCOS fiber-optic interface all maintain the same pinout as the original DIAX04 HDS03.2 series. Technicians can reuse existing motor cables, resolver cables, and SERCOS fiber rings without modification, significantly reducing installation time and the risk of wiring errors during hot-swap replacement.

For facilities running Bosch Rexroth INDRAMAT TDM or KDS legacy drives alongside DIAX04 units, this replacement provides a clear migration path. The SERCOS II protocol used by the HDS03.2 is directly compatible with Rexroth DIAX04 CLC and CSB motion controllers, as well as third-party SERCOS master controllers from Siemens SINUMERIK and Fanuc CNC platforms.

In control cabinet installations, the HDS03.2-W100N physical dimensions (height, width, and depth) match the original unit, ensuring no cabinet modifications are required. The drive mounts on the standard DIAX04 DIN rail system and connects to the shared DC bus bar using the original bus bar connectors. Cooling airflow requirements remain identical, so existing cabinet ventilation and thermal management infrastructure is fully reusable.

Signal isolation between the servo drive and upstream PLC or CNC controller is typically handled via the HMS01.1 or HMS02.1 SERCOS interface cards installed in the controller rack. These cards do not require replacement or reconfiguration when swapping the HDS03.2 drive unit, provided the SERCOS ring address and baud rate settings are preserved in the firmware card.

For facilities that also need to replace the motor-side components, the HDS03.2-W100N is compatible with Rexroth MHD, MKD, and MKE series servo motors. Motor data sets stored in the firmware card are motor-specific, so if the motor is also being replaced, updated motor data files should be loaded via the IndraWorks or BTV04 programming terminal before final commissioning.

Retrofit Guidance FAQ

Q: Can I reuse my existing motor and encoder cables?
Yes. The X2 motor power connector and X3/X4 encoder feedback connectors on the HDS03.2-W100N-HS12-01-FW maintain the same pinout as all DIAX04 HDS03.2 variants. No cable modifications are required.

Q: Will the SERCOS ring need to be reconfigured?
No, provided the replacement drive is assigned the same SERCOS node address as the failed unit. The address is set via the drive’s front-panel rotary switches and must match the address stored in the CNC or motion controller’s axis configuration.

Q: What happens to my axis parameters and motor tuning data?
If the original FWA-DIAX04-SSE-02V56-MS firmware card is intact, it can be transferred directly to the replacement drive chassis, preserving all axis parameters, motor data sets, and application-specific settings. If the card is damaged, a blank pre-loaded card is supplied and full recommissioning via IndraWorks will be required.

Q: Is the HVR/HVE power supply module compatible with this replacement drive?
Yes. The HDS03.2-W100N draws from the shared DC bus supplied by HVR02 or HVE02 supply modules. No changes to the supply module configuration are required.

Q: How much physical space does the replacement drive require?
The replacement unit is dimensionally identical to the original HDS03.2-W100N. No cabinet modifications, bracket changes, or cable extension work is needed.

Q: Can this drive work with Siemens SINUMERIK or Fanuc CNC controllers via SERCOS?
Yes. The SERCOS II interface (HS12) is an open standard. The HDS03.2-W100N-HS12-01-FW is compatible with any SERCOS II master controller, including Siemens SINUMERIK 840D and Fanuc Series 30i/31i/32i platforms, subject to correct SERCOS profile configuration.

Warranty Assurance

Every HDS03.2-W100N-HS12-01-FW replacement unit shipped from TOPNLMS is covered by a 12-month warranty from the date of delivery. Our pre-shipment testing protocol includes power-on initialization, SERCOS communication handshake verification, encoder feedback signal validation, and thermal performance checks. Units that do not pass all test criteria are not shipped.

In the event of a warranty claim, our technical support team responds within 24 business hours. Replacement units are dispatched on a priority basis to minimize production downtime. We maintain buffer stock of DIAX04 series drives specifically to support rapid warranty exchange programs for industrial customers.

Shipping is available worldwide from our Xiamen warehouse, with DHL Express, FedEx International Priority, and sea freight options available depending on urgency and order volume. Export documentation, including commercial invoices, packing lists, and certificates of origin, is prepared for all international shipments.

For volume procurement, OEM partnerships, or urgent emergency replacement inquiries, contact our industrial automation team directly.