Rexroth HMS01.1N-W0054-A-07-NNNN Service-Ready Spare Part

Rexroth HMS01.1N-W0054-A-07-NNNN Service-Ready Spare Part for Industrial Maintenance

The Rexroth HMS01.1N-W0054-A-07-NNNN is a single-axis inverter module from the IndraDrive M series, engineered for high-performance AC servo drive applications in demanding industrial environments. Designed and manufactured by Bosch Rexroth, this module delivers precise motion control and robust power conversion for CNC machining centers, automated assembly lines, packaging machinery, and process control systems. When a servo drive fault triggers an unplanned shutdown, having a service-ready HMS01.1N-W0054-A-07-NNNN in your spare parts inventory is the fastest path to restoring full production capacity.

This unit is supplied as an original spare part, fully tested prior to shipment, and backed by a 12-month warranty. It is suitable for direct replacement of end-of-life or failed HMS01.1N-W0054-A-07-NNNN modules without requiring firmware reconfiguration in compatible IndraDrive M drive systems. Procurement engineers and maintenance planners can rely on NINERMAS for long-term supply continuity of this and related Rexroth IndraDrive components, including discontinued and hard-to-source variants.

Spare Maintenance Table

Maintenance Planning for Continuous Operation

Replacing the HMS01.1N-W0054-A-07-NNNN in a live IndraDrive M system requires a structured approach to avoid secondary faults and minimize total downtime. Maintenance engineers should treat this inverter module replacement as an opportunity to inspect the entire drive cabinet and associated electrical circuit.

Before powering down the axis, verify the DC bus voltage on the HMV01 or HMV02 supply unit is within specification. A degraded supply module is a common root cause of repeated inverter faults and should be replaced concurrently if capacitor life or ripple current readings are out of tolerance. Inspect the HLB01 braking resistor module and its thermal fuse — excessive regenerative braking loads accelerate inverter wear and may have contributed to the HMS01 failure.

Check all power and motor cable connections at the X5 and X6 terminals of the HMS01 module. Corroded or loose terminals cause intermittent overcurrent faults that are frequently misdiagnosed as inverter failures. Inspect the motor feedback cable (encoder cable) for shielding integrity; a damaged shield on the MSK or MKD servo motor feedback line introduces noise that can corrupt position data and trigger drive protection shutdowns.

For multi-axis cabinets, inspect the IndraDrive M backplane bus connector and the DC bus bar connections between modules. Loose bus bar bolts cause voltage spikes that damage inverter IGBTs. Review the HAS01 or HAS02 auxiliary supply module output — the 24 VDC logic supply must remain stable during axis enable/disable transitions.

On the control side, verify the CSB01 or CSE02 control section firmware version is compatible with the replacement HMS01.1N-W0054-A-07-NNNN power section. Mismatched firmware between control and power sections is a known commissioning risk after module swap. If the system uses PROFIBUS DP or SERCOS II communication, confirm the drive address and baud rate settings are preserved in the IndraWorks project before restarting the axis.

Inspect terminal blocks and I/O wiring at the X31/X32 digital I/O connectors. Verify enable signals, ready outputs, and fault reset wiring continuity. For systems with safety functions (STO/SS1), test the safe torque-off circuit after module replacement — do not assume the safety relay or HMF01 filter module is intact without verification. Finally, check the cabinet door filter mats and fan units; blocked airflow is the leading cause of thermal overload faults in HMS01 series drives.

Site Replacement Workflow

Step 1 — Fault Isolation: Record the active fault code from the IndraDrive M operator panel or IndraWorks diagnostic log. Confirm the fault is localized to the HMS01.1N-W0054-A-07-NNNN power section and not to the control section (CSB01/CSE02) or motor feedback system before ordering the replacement module.

Step 2 — Safe Isolation: Isolate the drive cabinet using the main disconnect. Discharge the DC bus capacitors (minimum 5-minute wait after power-off, or verify with a calibrated voltmeter). Lock out / tag out per site safety procedures.

Step 3 — Module Removal: Disconnect the motor power cable (X5), motor feedback cable (X6), and DC bus bar connections. Remove the HMS01 module from the drive rail. Note the slot position in multi-axis configurations.

Step 4 — Replacement Installation: Install the service-ready HMS01.1N-W0054-A-07-NNNN in the same slot. Reconnect DC bus bars, motor power, and feedback cables. Torque all bus bar bolts to the specified value (refer to Rexroth DOK-INDRV*-HMS+HMD****-PR02-EN-P).

Step 5 — Commissioning Verification: Power up the supply unit first, then enable the axis. Confirm no fault codes are active. Run a low-speed jog cycle to verify encoder feedback and current loop response before returning the axis to automatic production mode.

Step 6 — Documentation: Update the maintenance log with the replacement date, new module serial number, and any associated component inspections. Schedule a follow-up inspection at 500 operating hours.

Spare Parts Support FAQ

Q1: Is this HMS01.1N-W0054-A-07-NNNN a direct drop-in replacement for my existing module?
Yes. The HMS01.1N-W0054-A-07-NNNN supplied by NINERMAS is an original Rexroth spare part with identical electrical and mechanical specifications. It is a direct replacement for the same part number in IndraDrive M multi-axis drive systems. No hardware modification is required. Firmware compatibility with the installed control section (CSB01/CSE02) should be verified using the Rexroth firmware compatibility matrix before installation.

Q2: How is the unit tested before shipment?
Every HMS01.1N-W0054-A-07-NNNN unit undergoes pre-shipment functional testing to verify power stage integrity, gate driver operation, and DC bus interface continuity. Units are inspected for physical damage, connector condition, and firmware version before packaging. A test report is available upon request for critical maintenance projects.

Q3: What is the warranty coverage and what does it include?
NINERMAS provides a 12-month warranty on the HMS01.1N-W0054-A-07-NNNN from the date of shipment. The warranty covers manufacturing defects and functional failures under normal operating conditions. It does not cover damage caused by incorrect installation, overvoltage events, or operation outside the specified environmental parameters. Warranty claims are processed with priority to minimize customer downtime.

Q4: Can NINERMAS support long-term supply of HMS01 series modules for multi-year maintenance contracts?
Yes. NINERMAS maintains sourcing relationships for Rexroth IndraDrive M series components, including HMS01, HMD01, HMV01, and associated control and communication modules. For plant operators managing legacy IndraDrive M systems beyond the Rexroth standard product lifecycle, NINERMAS can provide long-term supply agreements, consignment stock arrangements, and priority allocation for critical spare parts. Contact sale@ninermas.com to discuss your multi-year procurement requirements.