Bosch Rexroth HCS02.1E-W0028-A-03-NNNN Upgrade for IndraDrive

Product Overview

Bosch Rexroth HCS02.1E-W0028-A-03-NNNN Upgrade for IndraDrive HCS02: Smooth Transition from Legacy Servo Systems

The Bosch Rexroth HCS02.1E-W0028-A-03-NNNN is a compact servo drive controller from the IndraDrive HCS02 Series, rated at 28 A continuous output current and designed for single-axis motion control in demanding industrial automation environments. As legacy drive platforms such as the older EcoDrive DKC series and early IndraDrive C variants reach end-of-life or become increasingly difficult to source, the HCS02.1E-W0028-A-03-NNNN provides a validated, drop-in-compatible upgrade path that preserves existing wiring infrastructure, cabinet footprint, and SERCOS III or PROFIBUS communication architecture.

For system integrators and maintenance engineers managing a fleet of Rexroth-driven axes, this unit slots directly into the standard HCS02 mounting rail and connects to the existing HAS02 supply module or HMV01 mains supply unit without requiring new DC bus cabling. The 24 VDC control voltage supply, motor power connector pinout, and encoder feedback interface (Hiperface or EnDat 2.1) remain fully compatible with motors previously paired with discontinued HCS02 variants, including the W0012 and W0054 current classes. This means your existing MSK servo motors or MKD synchronous motors can be retained during the drive swap, dramatically reducing retrofit scope and downtime.

Communication compatibility is a critical factor in any drive migration. The HCS02.1E-W0028-A-03-NNNN supports the SERCOS III real-time Ethernet protocol natively, making it fully interoperable with Bosch Rexroth IndraMotion MLC and IndraMotion MTX motion controllers without firmware re-parameterization of the master. For installations running PROFIBUS DP via an HAS05 communication option module, the same option card can be transferred from the outgoing drive, preserving the existing GSD file configuration and PLC address mapping. This eliminates the need to modify the upstream Siemens S7-300 or S7-400 PLC program in mixed-vendor control architectures.

Physical installation is straightforward. The HCS02.1E-W0028-A-03-NNNN occupies a standard 50 mm slot width in the Rexroth modular drive cabinet, compatible with both Rittal TS 8 and Hoffman enclosure formats commonly used in automotive and machine tool applications. The unit’s integrated braking resistor connection and DC bus link terminals align with the existing HLB01 braking resistor wiring, so no additional panel modifications are required. Cooling is handled by the built-in fan unit, which is field-replaceable — an important consideration for high-availability production lines where scheduled maintenance windows are limited.

From a programming perspective, the drive parameters are stored in the IndraWorks DS engineering software project file. Migrating from a failed or obsolete HCS02 unit requires only loading the existing parameter set via the IW-BM programming cable (USB to RJ45) and downloading it to the replacement unit. No axis re-commissioning or motor identification run is needed if the motor data set is already stored in the parameter file. This reduces on-site commissioning time to under two hours in most single-axis replacement scenarios.

For multi-axis systems, the HCS02.1E-W0028-A-03-NNNN integrates seamlessly alongside other drives in the HCS02 family — including the HCS02.1E-W0012 (12 A) and HCS02.1E-W0054 (54 A) — sharing the same DC bus and control supply rail. This allows staged replacement of individual axes without disrupting the rest of the drive line, a key advantage when managing partial retrofits on running production equipment. The shared DC bus architecture also means regenerative energy from decelerating axes is available to accelerating axes, maintaining the energy efficiency profile of the original system design.

Procurement teams will note that the HCS02.1E-W0028-A-03-NNNN is stocked and available for immediate dispatch from our Xiamen warehouse. Each unit undergoes pre-shipment functional testing covering output current calibration, encoder feedback signal integrity, and communication link establishment. Units are shipped in original or equivalent anti-static packaging with full documentation. Standard lead time is 3–7 business days for international freight; expedited air freight options are available for emergency breakdown situations. All units are covered by a 12-month warranty from the date of invoice, with direct replacement support and technical assistance provided by our engineering team.

Compatibility Comparison Table

Seamless Upgrade Solutions

A complete IndraDrive HCS02 migration typically involves more than the drive unit itself. During the retrofit process, engineers commonly address the HAS02.1 supply module to verify DC bus capacitor condition and replace it if the unit has exceeded its service life. The HMV01.1E mains supply unit is often upgraded in parallel when the existing unit shows signs of capacitor aging or when the new drive configuration requires higher peak power availability. For axes where the existing MSK050C servo motor or MKD071B motor is retained, the motor power cable and encoder cable assemblies should be inspected and re-terminated if connector wear is present.

Communication infrastructure upgrades frequently accompany drive replacements. If the installation uses an HAS05.1 PROFIBUS option module, this card can be transferred directly to the HCS02.1E-W0028-A-03-NNNN, preserving the existing bus address and GSD configuration. For sites migrating from SERCOS II to SERCOS III, the IndraMotion MLC L45 motion controller provides the master-side upgrade path. In control cabinets where space is being reorganized during the retrofit, the HAS01.1 auxiliary supply module and HLB01.1N braking resistor are standard companion components that ensure the new drive operates within its thermal and energy dissipation specifications. Finally, for commissioning and parameter backup, the IW-BM USB programming cable is an essential tool that every maintenance team should have on hand before beginning the drive swap.

Retrofit Guidance FAQ

Q: Can I reuse my existing motor power and encoder cables?
Yes. The HCS02.1E-W0028-A-03-NNNN uses the same X5 motor power connector and X4 encoder feedback connector pinout as previous HCS02 variants. No rewiring is required if cables are in good condition.

Q: Do I need to re-commission the axis after replacing the drive?
No, provided you have a valid IndraWorks DS parameter backup from the outgoing drive. Load the parameter file via the IW-BM cable, download to the new unit, and perform a brief test run to verify position feedback and current loop response.

Q: Is the PROFIBUS address retained after replacement?
Yes. The PROFIBUS node address is stored in the HAS05 option module, not in the drive itself. Transfer the HAS05 card to the new drive and the bus address is preserved automatically.

Q: What is the physical installation clearance requirement?
The HCS02.1E-W0028-A-03-NNNN requires 100 mm clearance above and below for cooling airflow. Side clearance follows the standard 50 mm slot pitch of the HCS02 mounting rail system.

Q: Can this drive operate on a shared DC bus with HCS02.1E-W0012 and HCS02.1E-W0054 units?
Yes. All HCS02 series drives share a common DC bus architecture. Mixed current-class configurations are fully supported within the same supply module group.

Q: What happens if the replacement drive has a different firmware version?
IndraWorks DS will flag any firmware mismatch during parameter download. In most cases, the parameter set is forward-compatible. Our technical team can advise on firmware alignment if required.

Warranty Assurance

Every Bosch Rexroth HCS02.1E-W0028-A-03-NNNN unit supplied by TOPNLMS is covered by a 12-month warranty from the date of invoice. Prior to dispatch, each unit undergoes a structured pre-shipment test protocol that includes output current verification at rated load, encoder signal integrity check, SERCOS III communication link establishment, and 24 VDC control supply stability test. Units that do not pass all test criteria are quarantined and not shipped.

In the event of a warranty claim, TOPNLMS provides direct replacement support with a target response time of 24 hours for initial technical assessment. Replacement units are dispatched within 3 business days of claim approval. Our after-sales engineering team is available to assist with parameter recovery, fault code diagnosis, and commissioning support throughout the warranty period. For procurement teams requiring documentation, test reports and certificate of conformity are available upon request.

We understand that unplanned drive failures in production environments carry significant financial consequences. Our inventory management ensures that HCS02.1E-W0028-A-03-NNNN stock is maintained at levels sufficient to support emergency breakdown orders, with expedited air freight available for time-critical situations. Contact our sales team to discuss consignment stock arrangements or blanket purchase order programs for high-volume or multi-site maintenance contracts.

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