Description
Bosch Rexroth HMV01.1R-W0018-A-07-FNN1 | 18kW Supply Unit
Dynamic Product Introduction
The HMV01.1R-W0018-A-07-FNN1 is the part that establishes the DC-bus infrastructure in an IndraDrive M multi-axis system. It is not an individual servo inverter. Instead, it converts the incoming three-phase mains supply into the controlled high-voltage DC bus used by compatible HMS/HMD inverter modules and manages energy flow during both motor operation and regeneration. That distinction matters when sourcing a replacement: a visually similar HMS inverter cannot replace this supply unit, and a generic 700 VDC power supply is not an architectural substitute.
For the HMV01.1R-W0018 electrical family, Rexroth documentation specifies a 400–480 VAC, three-phase input, 48–62 Hz mains frequency, approximately 26 A continuous mains current at 400 VAC, and a controlled 750 VDC output/DC-bus level. Continuous DC-bus power is rated at 18 kW at 400 VAC, while short-duration peak DC-bus power reaches 45 kW under the specified test conditions. The unit also incorporates a braking-resistor switching function, with a documented 820 VDC switching threshold and substantially higher short-term braking capability than its continuous braking rating.
That regenerative capability is one of the defining characteristics of the HMV architecture. During deceleration, energy can return through the supply system rather than being handled exclusively as heat in a braking resistor (subject to the system configuration and operating limits). This is particularly relevant in high-inertia CNC, machine-tool, handling, and other multi-axis applications.
HMV01.1R-W0018-A-07-FNN1
Key Technical Specifications
- Manufacturer: Bosch Rexroth / Indramat
- Series: IndraDrive M
- Supply Family: HMV01.1R
- Exact Ordering Code: HMV01.1R-W0018-A-07-FNN1
- Function: Regenerative supply unit for modular servo drive systems
- Mains Connection: 3-phase
- Rated Mains Voltage: 400–480 VAC
- Mains Frequency: 48–62 Hz
- Continuous Mains Current: 26 A at 400 VAC
- Power Factor: approximately 0.97
- Controlled DC-Bus Voltage: 750 VDC
- Nominal DC-Bus Level: 700 VDC
- Continuous DC-Bus Power: 18 kW at 400 VAC
- Peak DC-Bus Power: 45 kW for up to approximately 0.3 s under the documented conditions
- DC-Bus Capacitance: approximately 705 µF
- Maximum Chargeable External DC-Bus Capacitance: approximately 150 mF, with the documented charging duration around 90 seconds
- Braking-Resistor Switch-On Threshold: approximately 820 VDC
- Continuous Braking Power: 0.4 kW
- Maximum Braking Power: 36 kW
- Maximum Brake Energy Absorption: 80 kWs
- Cooling: Internal air cooling
- Protection Rating: IP20
- External Control Voltage: 24 VDC ±5%
These values come primarily from Rexroth IndraDrive HMV01.1R project-planning documentation for the W0018 family rather than from the exact FNN1 suffix record.
Global Sourcing & Live-Test SOP
1. Inbound Verification
For an international procurement lot, inspect the unit before applying power.
- Photograph the complete Bosch Rexroth nameplate.
- Confirm the complete code .1R-W0018-A-07-FNN1 character by character.
- Record the serial number, hardware revision, and any additional identification labels.
- Do not assume the material number from an online database. The FNN1 suffix is associated with conflicting secondary material-number records.
- Inspect mains terminals, DC-bus terminals, grounding points, braking connections, and control connectors.
- Check for discoloration around power terminals and signs of DC-bus arcing.
- Inspect the cooling path and internal blower area for contamination.
- Compare the physical unit with the customer’s existing HMV/HMS/HMD configuration before approving the replacement.
2. Live Simulation
A proper bench test requires a compatible IndraDrive environment, not simply a generic three-phase supply.
- Verify the incoming mains voltage and phase sequence.
- Confirm protective grounding.
- Check the 24 V control supply.
- Verify precharge behavior before allowing the DC bus to reach its operating level.
- Monitor DC-bus rise toward the controlled 750 VDC level.
- Verify communication/control status with the compatible IndraDrive system.
- Confirm regenerative operation under controlled conditions where the test setup permits it.
- Verify braking-resistor switching behavior without exceeding the configured system limits.
3. Diagnostic Verification
Record:
- DC-bus voltage
- Mains current
- Precharge behavior
- Supply-unit diagnostic status
- Fault memory
- Regeneration status
- Cooling-fan operation
- Brake-circuit status
- Temperature behavior
Use properly rated test equipment for the high-voltage DC bus. A standard handheld multimeter should only be used when its CAT rating, voltage rating, leads, and test procedure are appropriate for the measurement.
4. 24-Hour Heat Run
For a production-critical replacement, operate the HMV module through a controlled load profile rather than performing only a no-load power-up.
Monitor the supply unit during acceleration, steady-state operation, and deceleration. Regenerative events are particularly useful for identifying problems that will not appear during a simple idle test.
Record temperatures, DC-bus voltage, diagnostic status, and any intermittent faults throughout the run.
5. Final Preparation
Before shipment:
- Photograph the verified nameplate.
- Record the exact ordering code.
- Record material number only after confirming it against the physical unit.
- Record hardware and firmware information where accessible.
- Preserve the customer’s original drive parameters separately.
- Package the electronics in ESD-safe material.
- Protect connectors and power terminals from mechanical damage.
- Include the tested configuration in the inspection record.
Field Engineer’s Pitfall Guide
❗ 1. Do not confuse the HMV supply with an HMS inverter
The .1R–A-07- supplies the common DC bus. HMS modules such as the HMS01.1N-W0070 are inverter power sections that use that bus to drive individual motor axes.
They occupy different positions in the IndraDrive architecture. A current-rating comparison alone is meaningless here.
❗ 2. The material number needs nameplate confirmation
This is a real procurement trap with this exact suffix.
One current component catalog identifies .1R–A-07- as R911329716, while another database assigns that same full code to a different material number. Meanwhile, R911297460 is documented for .1R–A-07-NNNN. The safest purchasing practice is therefore to specify the complete type code and require a clear nameplate photograph before shipment.
Do not silently replace with NNNN.
❗ 3. The 750 VDC bus is the service hazard—not just the 400–480 VAC input
The unit’s controlled DC-bus voltage reaches approximately 750 VDC, and the braking circuit can operate at substantially higher voltage before switching. The Rexroth documentation specifies an approximately 820 VDC braking-resistor switch-on threshold and a maximum braking power of 36 kW for the family. Proper discharge, lockout/tagout, measurement, and waiting procedures are mandatory before service.
A machine can appear electrically inactive while hazardous energy remains stored in the DC link.
Intent-Driven FAQ
Ws the ?
It is a Bosch Rexroth IndraDrive M .1R regenerative supply unit used to establish the DC bus for compatible modular servo drives. It is a supply-stage component, not a single-axis motor inverter.
What input voltage does the .1R- use?
The documented supply family is designed for three-phase 400–480 VAC, with a mains-frequency range of approximately 48–62 Hz.
What DC-bus voltage does it produce?
The .1R- uses a controlled 750 VDC DC-bus level, with 700 VDC identified as the nominal bus voltage in the Rexroth documentation.
How much continuous power can it supply?
The family is rated for approximately 18 kW continuous DC-bus power at 400 VAC. With the specified mains choke arrangement, the published documentation gives 18 kW; the corresponding maximum short-duration DC-bus power is 45 kW under the defined conditions.
Does it support regenerative braking?
Yes. The .1R is specifically a regenerative supply architecture. The documented data covers both infeeding and regenerative operation and includes a braking-resistor circuit for DC-bus overvoltage management.
Can I replace it with .1R–A-07-NNNN?
Do not treat that as an automatic plug-and-play substitution. The base electrical family is closely related, but the complete ordering code matters. The suffix should be matched against the original unit, machine documentation, and control configuration before approving a migration. Secondary listings explicitly warn that the suffix/configuration needs verification.
Which material number should I use when purchasing?
Use the complete type code from the physical nameplate first. Current secondary sources conflict on the material number associated with .1R-, while R911297460 is clearly associated in another source with the ...-NNNN version. For a purchase order, include the full .1R- code and require the seller to confirm the material number from the actual unit.
Procurement Note
The correct sourcing description should emphasize that .1R- is an IndraDrive M HMV regenerative supply unit, not a generic servo drive.
For used, surplus, or refurbished inventory, request:
- Exact nameplate photograph
- Complete ordering code
- Material number
- Serial number
- Hardware revision
- Condition classification
- Powered-test evidence
- DC-bus/precharge test status
- Warranty terms
- Confirmation that the
suffix has not been substituted withNNNN
For in-stock or factory-sealed claims, the physical nameplate should be the controlling identification record—not a seller’s database title.
Target procurement identification:
Bosch Rexroth ramat — IndraDrive M regenerative supply unit
