Rexroth HMS01 Series Inverters: HMS01.1N-W0070-A-07-NNNN

Technical Dossier

Product Details And Specifications

Bosch Rexroth HMS01 Series: Comprehensive Module Range and Technical Overview

The Bosch Rexroth HMS01 series is a line of single-axis AC servo inverters belonging to the IndraDrive family, designed for high-dynamic motion control applications in heavy industrial environments. Deployed across chemical processing plants, nuclear facility auxiliary systems, petroleum refinery automation lines, steel rolling mills, and large-scale press and forming machinery, the HMS01 platform represents one of Rexroth's most widely installed drive architectures in the 400–480 V AC segment. Its modular form factor, standardized SERCOS and PROFIBUS interface options, and compatibility with IndraDyn servo motors have made it a default specification in multi-axis machine tool and handling system designs throughout Europe, Asia, and North America. The series covers a continuous output current range from 3 A to 210 A, accommodating motor power ratings from sub-kilowatt positioning axes to high-torque main spindle drives.

The Evolution of HMS01 Architecture

The HMS01 series was introduced as part of Rexroth's second-generation IndraDrive platform, succeeding the earlier HDS and DKS drive families. The transition from HDS to HMS01 brought a shift from analog command interfaces to fully digital fieldbus-native communication, with native SERCOS III and PROFIBUS DP support embedded at the firmware level rather than via add-on cards. Early HMS01 variants used the -A-07 firmware generation, which established the baseline parameter set (P-0-xxxx / S-0-xxxx) still referenced in current commissioning documentation. Subsequent firmware revisions introduced enhanced safety functions (STO, SS1, SS2) compliant with IEC 62061 SIL 2 and EN ISO 13849-1 PLd, eliminating the need for external safety relays on many machine designs. The -NNNN option code in the model string denotes the standard variant without optional communication or safety extensions. Compatibility between HMS01 units and IndraDrive Cs (HCS) supply units is governed by the DC bus linking specification; mixed installations require careful bus capacitance and peak current budgeting. As of 2024, the HMS01 series has entered the mature/end-of-active-production phase for several sub-variants. Rexroth continues to provide spare parts and repair services, but new machine designs are directed toward the IndraDrive Mi (KSM/KMS) and IndraDrive ML (HML) platforms. For installed base maintenance, HMS01 units remain fully supported under Rexroth's long-term spare parts program through at least 2030.

HMS01 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked HMS01 series single-axis inverter variants. Each unit is a self-contained axis module requiring a compatible HCS or HMV supply unit and an IndraDrive control section (CSB, CSE, or CDB).

HMS01.1N-W0003-A-07-NNNN: 3 A continuous, 400 V class, standard single-axis inverter, SERCOS interface, no safety option.
HMS01.1N-W0006-A-07-NNNN: 6 A continuous output, suitable for low-inertia servo axes, standard firmware.
HMS01.1N-W0009-A-07-NNNN: 9 A continuous, mid-range axis module for MSK servo motors up to ~2 kW.
HMS01.1N-W0013-A-07-NNNN: 13 A continuous, common in multi-axis handling and assembly systems.
HMS01.1N-W0018-A-07-NNNN: 18 A continuous, standard workhorse variant for 3–5 kW servo axes.
HMS01.1N-W0028-A-07-NNNN: 28 A continuous, used in high-dynamic feed and spindle axes on CNC machining centers.
HMS01.1N-W0036-A-07-NNNN: 36 A continuous, supports MSK100 and MKD series motors in heavy-duty applications.
HMS01.1N-W0054-A-07-NNNN: 54 A continuous, deployed in main spindle and large gantry axis configurations.
HMS01.1N-W0070-A-07-NNNN: 70 A continuous output, 400–480 V AC input, single-axis inverter for high-power servo axes; compatible with IndraDyn MSK133 and MAD series motors; standard SERCOS/PROFIBUS interface; no integrated safety option (NNNN); requires HCS03 or HMV01 supply unit.
HMS01.1N-W0090-A-07-NNNN: 90 A continuous, high-power axis module for press and forming machine main drives.
HMS01.1N-W0110-A-07-NNNN: 110 A continuous, used in large injection molding and extrusion line servo axes.
HMS01.1N-W0150-A-07-NNNN: 150 A continuous, heavy-duty variant for rolling mill and winding machine applications.
HMS01.1N-W0210-A-07-NNNN: 210 A continuous, maximum current class in the HMS01 range, for high-torque main spindle drives.
HMS01.1N-W0028-A-07-NNNV: 28 A variant with integrated STO (Safe Torque Off) safety function, SIL 2 / PLd rated.
HMS01.1N-W0054-A-07-NNNV: 54 A variant with STO safety option, for safety-rated axis applications without external safety relay.
HMS01.1N-W0070-A-07-NNNV: 70 A variant with STO safety function; functionally equivalent to W0070-A-07-NNNN with added IEC 62061 SIL 2 compliance.

Sourcing Hard-to-Find & Obsolete HMS01 Series Parts

DriveKNMS maintains a dedicated inventory program for HMS01 series units, including variants that have been discontinued from Rexroth's standard production schedule. For end-users operating HMS01-based machine tools, transfer lines, or process automation systems beyond the original equipment lifecycle, DriveKNMS provides: verified surplus stock of low-volume HMS01 current ratings (W0003, W0006, W0009) that are no longer available through standard distribution channels; exchange and repair services for units with known failure modes including DC bus capacitor degradation, IGBT module failure, and control board communication faults; cross-reference support for identifying compatible replacement units where direct HMS01 equivalents are unavailable; and documentation support for parameter backup and restoration during drive replacement on legacy IndraDrive installations. All sourced units are accompanied by full traceability documentation and are subject to DriveKNMS incoming inspection protocols before dispatch.

Quality Control for the HMS01 Range

HMS01 inverter modules present specific test requirements due to their integrated DC bus architecture and high-speed serial communication interfaces. DriveKNMS applies the following test procedures to all HMS01 units processed through its facility: DC bus capacitance measurement and ESR testing to verify capacitor bank health against Rexroth's published derating curves; IGBT static and dynamic switching tests under controlled load conditions to confirm gate drive integrity and switching loss parameters; SERCOS and PROFIBUS interface loopback testing using IndraDrive-compatible master controllers to verify communication timing and telegram integrity; firmware version verification and parameter set validation against the unit's nameplate firmware revision code; thermal imaging under simulated load to identify hotspot anomalies in power stage and control board assemblies; and full functional run-in test with a matched IndraDyn servo motor load to confirm closed-loop position and velocity control performance within Rexroth's specified accuracy tolerances.