Bosch Rexroth HMS01.1N-W0070-A-07-NNNN Servo Inverter – IndraDrive HMS

Bosch Rexroth HMS01.1N-W0070-A-07-NNNN: Single-Axis Servo Inverter in the IndraDrive HMS Platform

The HMS01.1N-W0070-A-07-NNNN is a single-axis AC servo inverter belonging to Bosch Rexroth’s IndraDrive HMS product family. Within a multi-axis drive cabinet, this unit occupies one axis slot on the DC bus rail and draws its intermediate circuit voltage from a shared HMV supply module — typically HMV01.1R or HMV01.1E — operating at a nominal 750 V DC link. The “W0070” field in the part number designates a continuous output current rating of 70 A RMS, which corresponds to a shaft power envelope of approximately 22–37 kW depending on motor back-EMF and power factor. The “N” suffix in HMS01.1N identifies the standard (non-regenerative) inverter topology; braking energy is dissipated through an external or shared braking resistor rather than fed back to the supply grid.

The slot identifier “07” encodes the factory-installed communication option card. Position 07 maps to the SERCOS II fiber-optic interface, enabling deterministic isochronous real-time communication with Rexroth IndraMotion MLC, MTX, and MLD controllers at cycle times as low as 250 µs. The trailing “NNNN” field confirms that no integrated functional safety options (e.g., Safe Torque Off, Safe Stop 1) are present in this configuration. Applications requiring SIL 2 / PLd safety functions must specify an alternative safety suffix at the time of order.

This inverter is designed for continuous duty in servo-controlled axes where torque bandwidth, position repeatability, and deterministic bus latency are primary engineering constraints. Typical deployment environments include CNC machine tool feed axes, packaging line servo stations, injection molding clamp and injection axes, and precision gantry systems in semiconductor back-end equipment.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

DC Bus Architecture and Power Stage Topology: The HMS01.1N does not contain its own rectifier stage. It connects directly to the shared DC bus rail distributed by the HMV supply module across all axis inverters in the cabinet. This common DC bus topology eliminates per-axis rectifier losses and allows kinetic energy recovered from decelerating axes to be consumed by simultaneously accelerating axes within the same bus segment — a passive energy exchange mechanism that reduces net demand on the supply module without requiring active regeneration hardware in the inverter itself.

IGBT Power Module and Gate Drive: The output stage employs a three-phase IGBT bridge with integrated freewheeling diodes. Gate drive circuits operate with short-circuit protection via desaturation detection, with a blanking time calibrated to suppress false trips from parasitic inductance in the motor cable. The switching frequency is typically 4 kHz or 8 kHz, selectable via IndraWorks parameter P-0-0001, with higher switching frequencies reducing audible motor noise at the cost of increased inverter thermal load.

EMC Design and Shielding Architecture: The HMS01.1N is designed for installation in a grounded steel enclosure with a dedicated EMC mounting plate. The DC bus connectors and motor output terminals are physically separated to minimize capacitive coupling between high-dV/dt switching nodes and the control signal plane. Internal signal routing uses differential pairs for encoder feedback and analog reference signals. The SERCOS II fiber-optic interface provides galvanic isolation between the drive and the controller, eliminating ground loop interference paths that are common in copper-based fieldbus topologies.

Encoder Feedback Processing: The standard feedback interface supports Rexroth’s proprietary EnDat 2.1 and Hiperface protocols, as well as resolver inputs via an optional feedback card. The position evaluation ASIC processes encoder signals at a hardware interpolation rate synchronized to the SERCOS cycle, ensuring that position data presented to the controller reflects the actual mechanical state at the precise moment of the isochronous data exchange — a requirement for multi-axis interpolation in CNC contouring applications.

Thermal Management: The integrated axial fan draws ambient air through the heatsink fins mounted on the rear of the power module. A thermal model running in the drive firmware estimates junction temperature based on output current, switching frequency, and ambient temperature sensor readings. If the estimated junction temperature approaches the protection threshold, the drive reduces switching frequency or output current before triggering a fault — a controlled derating strategy that avoids abrupt shutdowns in production environments.

System Integration Benefits

• Deterministic isochronous communication: SERCOS II at 250 µs cycle time guarantees bounded latency between position command issuance at the controller and torque actuation at the motor shaft — a prerequisite for multi-axis contouring with sub-micron path deviation budgets.
• Shared DC bus energy exchange: Axes decelerating under regenerative braking supply energy directly to accelerating axes on the same bus rail, reducing peak demand on the HMV supply module and lowering cabinet heat dissipation by up to 15–20% in coordinated multi-axis profiles.
• Unified parameterization via IndraWorks: All drive parameters, motor data sets, and axis configurations are managed from a single engineering environment. Parameter sets can be exported, version-controlled, and reloaded after hardware replacement without manual re-commissioning of individual axis values.
• Integrated diagnostic transparency: The drive maintains a non-volatile error history log with timestamped fault codes, operating hours, and thermal event records. This data is accessible via IndraWorks or SERCOS service channel without interrupting production, enabling predictive maintenance scheduling based on actual operating history rather than fixed calendar intervals.
• Motor data auto-identification: On first commissioning, the drive executes a motor identification routine that measures stator resistance, leakage inductance, and back-EMF constant. These measured values are stored as the active motor data set, compensating for manufacturing tolerances and cable impedance — improving torque linearity without manual parameter tuning.
• Scalable axis count: Multiple HMS01.1N units share a single HMV supply module and a single SERCOS ring. Adding axes requires only mechanical installation, DC bus connection, and fiber-optic ring extension — no additional power supply or communication infrastructure is needed up to the supply module’s rated current capacity.
• Firmware-based control mode flexibility: A single hardware unit supports position, velocity, torque, and force control modes selectable via SERCOS operating mode parameter (P-0-4014). Mode transitions are executed within one SERCOS cycle, enabling application-level switching between control strategies without drive power cycling.
• CE and UL dual certification: The unit carries both CE marking (Low Voltage Directive, EMC Directive) and UL/cUL listing, allowing deployment in machinery destined for both European and North American markets without requiring separate drive hardware variants or additional certification testing at the machine level.

Quality Assurance & Global Logistics

Every HMS01.1N-W0070-A-07-NNNN unit supplied by siemensplc.com is sourced as genuine Bosch Rexroth original equipment. Units are inspected upon receipt against the manufacturer’s part number label, date code, and serial number traceability records. Pre-shipment checks include visual inspection of connector integrity, fan operation verification, and firmware version confirmation against the order specification.

Packaging follows Bosch Rexroth OEM standards where original cartons are available, with ESD-protective inner wrapping and foam-cushioned outer cartons for international freight. For units shipped as export surplus, anti-static bags and custom foam inserts are used to maintain the same mechanical protection standard.

Shipments originate from our warehouse in Xiamen, China. Standard international delivery is executed via DHL Express, FedEx International Priority, or UPS Worldwide Expedited, with typical transit times of 3–7 business days to Europe, North America, Southeast Asia, and the Middle East. DDP (Delivered Duty Paid) terms are available for customers requiring customs clearance to be handled by the shipper. Export documentation includes commercial invoice, packing list, and certificate of origin. HS Code 8504.40 applies for customs classification.

A 12-month warranty is provided from the date of shipment. Warranty coverage includes manufacturing defects and component failures under normal operating conditions as defined in the Bosch Rexroth HMS series application manual. Warranty claims are processed with a target response time of 48 hours from receipt of the defective unit and supporting documentation.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.