Perfect Genuine New Power Supply Module Rexroth R911296725 HMV01.1R-W0045-A-07-NNNN Bestselling
The REXROTH R911296725 HMV01.1R-W0045-A-07-NNNN is an IndraDrive M regenerative power supply unit designed for modular servo drive systems used in industrial automation, CNC machinery, robotics, packaging equipment, printing machines, and high-performance production lines. Unlike a compact single-axis drive, this HMV unit functions as the central power supply stage for a multi-axis drive system. It converts incoming three-phase mains power into a stable DC bus supply and supports connected drive controllers within the IndraDrive M architecture. Public product listings identify R911296725 as a power supply unit with type code HMV01.1R-W0045-A-07-NNNN, rated output of 45 kW, input voltage up to 480 VAC, and output voltage around 750 VDC.
Basic Product Information
| Item | Description |
|---|---|
| Product Brand | REXROTH |
| Part Number | R911296725 |
| Type Code | HMV01.1R-W0045-A-07-NNNN |
| Product Series | IndraDrive M HMV |
| Product Type | Regenerative Power Supply Unit |
| Rated Output | 45 kW |
| Input Voltage | 380 to 480 VAC three-phase, application dependent |
| Output Voltage | Approx. 750 VDC DC bus |
| Cooling Method | Internal air cooling with integrated blower |
| Protection Class | IP20 / cabinet-mounted industrial design |
| Product Net Weight | 22 kg |
| Typical Use | DC bus supply for modular servo drive systems |
The product weight is 22 kg unpacked, based on a Rexroth product listing for material number R911296725. This weight should be treated as the product body weight rather than final shipping weight, because packing material, wooden crate, moisture protection, and export carton reinforcement can increase the total gross weight.
Technical Overview
| Technical Parameter | Value / Description |
|---|---|
| Material Number | R911296725 |
| Model | HMV01.1R-W0045-A-07-NNNN |
| Function | Power supply stage for modular IndraDrive systems |
| Supply Type | Regenerative supply unit |
| Nominal DC Bus Voltage | DC 700 V class system |
| Output Voltage | Listed around 750 VDC |
| Rated Output Power | 45 kW |
| Input Current | Listed as 65 A in public surplus product data |
| Cooling | Air internal through integrated blower |
| Chopper / Brake Design | Internal brake resistor and internal chopper listed in public product data |
| Mounting Environment | Electrical cabinet installation |
| Protection Mode | IP20 class industrial enclosure |
| Suitable Drive Family | IndraDrive M modular drive system |
The regenerative design is the key difference between the HMV01.1R and simpler feeding supply units. In a multi-axis system, motors frequently decelerate, lower loads, or return mechanical energy back into the electrical system. A regenerative supply unit is designed to manage this returned energy more efficiently than a purely resistive braking concept. In practical production environments, this can reduce heat load inside the cabinet, improve system energy handling, and support high-dynamic machines where acceleration and braking cycles occur repeatedly.
The HMV01.1R-W0045-A-07-NNNN is especially relevant for systems where several servo axes are grouped around a common DC bus. Instead of providing an independent supply for every axis, the HMV supply unit creates the shared DC link, while downstream inverter modules control the individual motors. This architecture is common in machine tools, transfer lines, synchronized material handling systems, printing machines, winding equipment, and packaging machinery where coordinated axis movement is required.
Application Areas
| Application Area | Typical Role of R911296725 HMV01.1R-W0045-A-07-NNNN |
|---|---|
| CNC Machine Tools | Supplies DC bus power for spindle and feed-axis drive modules |
| Robotics | Supports multi-axis servo systems with high dynamic response |
| Packaging Machinery | Provides stable power for synchronized cutting, sealing, conveying, and indexing axes |
| Printing Machinery | Supports web tension, roller synchronization, and high-speed motion control |
| Material Handling | Powers coordinated conveyor, lifting, positioning, and transfer axes |
| Metal Forming Equipment | Handles high-load servo operation and regenerative braking cycles |
| Automated Assembly Lines | Provides centralized drive power for modular production stations |
For CNC and high-speed automation systems, power stability is not only a matter of energy conversion. It directly affects drive availability, axis synchronization, braking behavior, and system fault tolerance. A weak or incompatible supply unit can cause undervoltage faults, braking faults, overheating, or unstable DC bus behavior. The R911296725 unit is therefore normally selected according to system power demand, number of connected axes, braking energy, cabinet cooling concept, mains voltage, and original machine configuration.
Design and Installation Considerations
| Installation Point | Practical Note |
|---|---|
| Cabinet Mounting | The unit should be installed in a suitable electrical cabinet with proper clearance |
| Cooling Airflow | Internal air cooling requires clean air paths and correct cabinet ventilation |
| Grounding | Protective grounding must follow the drive system manual and local electrical rules |
| DC Bus Connection | Must be matched with compatible IndraDrive M modules |
| Mains Input | Three-phase industrial mains supply must match the allowed voltage range |
| Service Access | Front and top access should remain available for wiring, labels, and maintenance |
| Replacement Check | Match the full type code and material number before replacement |
The complete type code HMV01.1R-W0045-A-07-NNNN should be checked carefully before replacement. In Rexroth IndraDrive systems, small differences in the type code may indicate different power ratings, supply concepts, cooling modes, firmware-related options, control interfaces, or mechanical details. For purchasing, repair, and machine maintenance, the safest matching rule is to use both identifiers together: R911296725 and HMV01.1R-W0045-A-07-NNNN. Public distributor listings also identify this exact combination as a Rexroth HMV power supply unit.
Functional Advantages
| Advantage | Explanation |
|---|---|
| Regenerative Energy Handling | Supports energy return during deceleration and braking cycles |
| 45 kW Power Class | Suitable for medium to high power modular servo systems |
| Common DC Bus Support | Enables several drive controllers to share one central power supply |
| Integrated Cooling | Built-in air cooling helps manage thermal load during continuous operation |
| Industrial Enclosure Design | Designed for cabinet-based automation and servo drive applications |
| Maintenance Friendly | Clear type code and material number support replacement and spare-part sourcing |
| System Integration | Intended for Rexroth IndraDrive M modular drive architecture |
From a maintenance perspective, this product is typically used as a high-value spare part. When a machine stops because of a power supply fault, replacing the correct HMV unit can restore the entire drive system rather than only a single axis. For this reason, the condition of the DC bus terminals, cooling fan, internal power electronics, labels, and connector area should be inspected before installation. If the unit is refurbished or used, functional testing under appropriate load conditions is recommended before final machine commissioning.
Product Description for Industrial Buyers
The REXROTH R911296725 HMV01.1R-W0045-A-07-NNNN is a 45 kW regenerative power supply unit for IndraDrive M modular servo drive systems. It is designed to supply a stable DC bus voltage to connected drive controllers and to support demanding industrial motion applications where multiple axes operate with high synchronization and dynamic braking. The unit is suitable for machine tools, robotics, packaging systems, printing equipment, assembly machinery, and other automated production equipment requiring reliable servo power distribution.
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