Bosch Rexroth HMS01.1N-W0350-A-07-NNNN Ruggedized Servo Drive

Product Overview

Bosch Rexroth HMS01.1N-W0350-A-07-NNNN Ruggedized Servo Drive: Industrial Resilience for Harsh Environments

The Bosch Rexroth HMS01.1N-W0350-A-07-NNNN is a high-performance single-axis servo inverter from the IndraDrive HMS series, engineered to deliver uncompromising motion control reliability in the most demanding industrial environments. Rated at 350 A continuous output current, this drive is purpose-built for heavy-duty servo applications where thermal stability, electromagnetic immunity, and long-term operational continuity are non-negotiable requirements. Whether deployed in continuous production lines, hazardous processing zones, or high-vibration heavy machinery, the HMS01.1N-W0350-A-07-NNNN maintains precise torque and velocity control without degradation.

Bosch Rexroth’s IndraDrive HMS platform is recognized globally as a benchmark in industrial servo technology. The HMS01.1N-W0350-A-07-NNNN integrates seamlessly into multi-axis motion architectures, supporting SERCOS III, PROFIBUS DP, and EtherCAT communication protocols, making it fully compatible with modern PLC and DCS control topologies. Its robust power section is designed to withstand voltage fluctuations, harmonic disturbances, and transient surges common in steel mills, mining operations, and petrochemical facilities — environments where lesser drives fail prematurely.

In high-temperature foundry and smelting environments, where ambient temperatures routinely exceed 40°C and radiant heat from furnaces creates additional thermal stress, the HMS01.1N-W0350-A-07-NNNN’s internal thermal management system — combining forced-air cooling with intelligent derating algorithms — ensures continuous operation without nuisance trips. The drive’s IP20-rated enclosure, when installed within a properly sealed IP54 or IP65 control cabinet, provides effective protection against metal dust, carbon particulate, and coolant mist that are endemic to machining and metalworking facilities.

Rugged Specifications Table

Comprehensive Protection Solutions

The HMS01.1N-W0350-A-07-NNNN is rarely deployed in isolation. In a fully integrated Bosch Rexroth IndraDrive system, it operates alongside the HMD01.1N supply module, which provides the shared DC bus power rail for multi-axis configurations. The HCS02.1E and HCS03.1E converter/inverter units from the same IndraDrive C series are frequently used in parallel cabinet installations where axis count and power density must be balanced. For applications requiring coordinated multi-axis motion — such as rolling mill stands or large-format CNC gantries — the HMS01.1N-W0350-A-07-NNNN is typically paired with the Bosch Rexroth IndraControl XM22 or XM42 motion controller, which handles real-time trajectory planning and axis synchronization over SERCOS III.

On the safety side, the drive’s integrated Safe Torque Off (STO) function interfaces directly with Pilz PNOZ or Sick Flexi Soft safety relay modules, enabling SIL 2 / PLd machine safety architectures without external contactors. For installations in ATEX Zone 2 or NEC Class I Division 2 classified areas — common in offshore platforms and chemical processing plants — the HMS01.1N-W0350-A-07-NNNN is housed in purged and pressurized enclosures (Type X or Type Z) in compliance with IEC 60079-2, ensuring the drive’s electronics remain isolated from flammable atmospheres.

Power quality at the input side is protected by Bosch Rexroth HNF01.1A line filters and HNL01.1E line reactors, which suppress conducted EMI and limit harmonic injection into the facility power grid — a critical requirement in sensitive environments such as hospital power systems or precision semiconductor fabrication. On the motor side, the HMF01.1 motor filter choke reduces dV/dt stress on motor winding insulation, extending motor service life in long-cable installations. For distributed I/O integration, the Rexroth Inline I/O modules (IL series) and Bosch Rexroth R-IL ETH BK DI8 DO4 2TX-PAC bus couplers provide field-level signal conditioning and digital I/O expansion within the same control cabinet.

When the HMS01.1N-W0350-A-07-NNNN is integrated into a broader Siemens or Rockwell Automation PLC environment — a common scenario in brownfield upgrades — the drive’s PROFIBUS DP or EtherCAT interface allows transparent parameter access and diagnostic data exchange with Siemens S7-300/S7-400 CPUs or Allen-Bradley ControlLogix L7x controllers. This interoperability eliminates the need for proprietary motion controllers in mixed-vendor installations, reducing total system cost and simplifying maintenance.

Application in Critical Infrastructure

In oil and gas upstream operations, the HMS01.1N-W0350-A-07-NNNN drives the servo axes of wellhead pump jacks, pipeline compressor valve actuators, and subsea umbilical winding machines. Its ability to maintain precise torque control under rapidly varying load conditions — characteristic of reciprocating pump drives — reduces mechanical stress on gearboxes and couplings, directly lowering maintenance intervals and unplanned downtime costs. Offshore platform operators particularly value the drive’s resistance to salt-laden humid air and its compliance with DNV GL marine certification requirements when installed in approved enclosures.

In underground coal and hard-rock mining, the drive powers conveyor belt tensioning systems, longwall shearer cutting heads, and roof support positioning actuators. The IndraDrive HMS platform’s ability to regenerate braking energy back to the DC bus — rather than dissipating it as heat through braking resistors — is a significant operational advantage in deep-mine environments where heat removal is costly and ventilation capacity is limited. The HMS01.1N-W0350-A-07-NNNN’s robust short-circuit and ground-fault protection prevents cascade failures in multi-drive conveyor systems where a single axis fault could otherwise propagate to adjacent drives.

Power generation facilities — including thermal, hydro, and nuclear plants — deploy the HMS01.1N-W0350-A-07-NNNN in turbine blade pitch control systems, cooling tower fan drives, and fuel handling conveyor systems. The drive’s deterministic SERCOS III communication ensures sub-millisecond synchronization between multiple axes, a requirement for coordinated turbine control systems operating under grid frequency regulation mandates. Water treatment and desalination plants use the drive to control high-pressure pump servo axes and membrane filtration carousel positioning systems, where continuous 24/7 operation and resistance to chemical vapor exposure are essential.

In the steel and metallurgy sector, the HMS01.1N-W0350-A-07-NNNN is a proven solution for rolling mill main drive applications, continuous casting mold oscillation systems, and ladle transfer car positioning. The drive’s high dynamic response — with current loop bandwidths exceeding 1 kHz — enables the precise thickness control required in cold rolling mills producing automotive body sheet steel to tolerances of ±2 µm. Its integrated oscilloscope and trace functions, accessible via the Bosch Rexroth IndraWorks DS engineering software, allow maintenance engineers to capture and analyze transient fault events without interrupting production.

Security & Quality FAQ

Q1: What does the 12-month warranty cover for the HMS01.1N-W0350-A-07-NNNN?
All units supplied by TOPNLMS carry a 12-month warranty covering manufacturing defects, component failure, and functional non-conformance under normal operating conditions. Each unit undergoes pre-shipment functional testing including power-on verification, communication interface check, and parameter upload confirmation. Warranty claims are processed with full technical support from our engineering team, and replacement units are dispatched within 3–5 business days upon fault confirmation.

Q2: How is the HMS01.1N-W0350-A-07-NNNN tested before shipment?
Every HMS01.1N-W0350-A-07-NNNN unit is inspected and tested prior to dispatch. Our quality control process includes visual inspection for physical damage, firmware version verification, DC bus capacitor pre-charge test, STO function validation, and communication port continuity check. Units that do not pass all test criteria are quarantined and not shipped. A test report is available upon request for critical infrastructure procurement.

Q3: Is the HMS01.1N-W0350-A-07-NNNN compatible with my existing IndraDrive system and Bosch Rexroth motors?
Yes. The HMS01.1N-W0350-A-07-NNNN is fully compatible with the Bosch Rexroth IndraDrive HMS platform and supports all standard Rexroth synchronous and asynchronous servo motors using EnDat, Hiperface, Resolver, and TTL/HTL feedback systems. It is also compatible with third-party motors when appropriate feedback adapters are used. For mixed-vendor PLC environments (Siemens, Rockwell, Mitsubishi), the drive’s PROFIBUS DP and EtherCAT interfaces ensure seamless integration. Contact our technical team with your motor nameplate data and existing drive firmware version for a compatibility confirmation before ordering.

Q4: Can TOPNLMS guarantee long-term supply and replacement support for this model?
Yes. TOPNLMS maintains dedicated stock of IndraDrive HMS series drives including the HMS01.1N-W0350-A-07-NNNN to support both planned maintenance schedules and emergency breakdown replacements. We understand that production-critical facilities cannot afford extended lead times for spare parts. Our inventory is sourced from authorized distribution channels and verified against Bosch Rexroth original part numbers. For customers requiring guaranteed stock reservation or annual supply agreements, please contact our sales team to discuss framework purchasing arrangements.