Bosch Rexroth HCS02.1E-W0054-A-03-NNNN

Description

Bosch Rexroth HCS02.1E-W0054-A-03-NNNN

 

Product Introduction

The HCS02.1E-W0054-A-03-NNNN is the 54 A member of Bosch Rexroth’s IndraDrive C HCS02 compact converter family. This is a cabinet-mounted motion-control power section intended for one-axis applications where the drive must handle substantially more current than the smaller W0012 and W0028 variants. The exact material number is R911298373, which should be retained in procurement records alongside the complete type code.

The important number here is not simply “54 A.” Bosch Rexroth’s published data gives 54 A maximum device current and 20.6 A continuous current. Continuous power is specified at 7 kW without a power choke and 10 kW with a power choke; maximum power rises to 12 kW and 16 kW respectively. That distinction matters when matching the drive to a motor and machine duty cycle.

The HCS02 architecture uses a control-unit interface for automation, feedback, safety, and additional I/O functions. Consequently, the power-section part number alone should not be treated as proof that a complete replacement drive has the same controller, firmware, encoder configuration, or application parameters. Bosch Rexroth’s HCS02 documentation and current technical records identify this unit as an IndraDrive C HCS02 power section/drive controller with internal forced-air cooling.

Key Technical Specifications

• Manufacturer: Bosch Rexroth
• Series: IndraDrive C
• Exact Type Code: .1E-W0054-A-03-NNNN
• Material Number: R911298373
• Device Configuration: compact converter
• Maximum Device Current: 54 A
• Continuous Current: 20.6 A
• Power Range: family approximately 1.5–11 kW
• Three-Phase Mains Input: 200–500 VAC
• Single-Phase Mains Input: 200–250 VAC
• Nominal Mains Frequency: 50–60 Hz
• Control Voltage: 24 VDC
• Output: 3 × AC, dependent on mains connection voltage
• Continuous Power Without Choke: 7 kW
• Continuous Power With Power Choke: 10 kW
• Maximum Power Without Choke: 12 kW
• Maximum Power With Power Choke: 16 kW
• Maximum Output Frequency at 4 kHz Switching: 0–400 Hz
• Maximum Output Frequency at 8 kHz Switching: 0–800 Hz
• Maximum Output Frequency at 12 kHz Switching: 0–1200 Hz
• Maximum Output Frequency at 16 kHz Switching: 0–1600 Hz
• Cooling: Internal air cooling through integrated blower
• Protection Rating: IP20
• Width: Approximately 105 mm
• Height: Approximately 251.5 mm
• Depth: Approximately 352 mm
• Weight: Approximately 6.7 kg
• Installation Environment: Cabinet installation; pollution degree 2 is reported in current technical records
• Operating Temperature: 0–40°C in published secondary technical records

The published power and current figures are application-dependent. Motor selection, duty cycle, switching frequency, cabinet temperature, mains configuration, and the use of a power choke all affect the permissible operating point.

 

Global Sourcing & Live-Test SOP

1. Inbound Verification

For an incoming .1E-W0054-A-03-NNNN, start with the physical nameplate.

• Confirm Bosch Rexroth / Indramat identification.
• Verify R911298373.
• Match the complete type code character-for-character.
• Record serial number and hardware revision.
• Photograph the front, sides, terminal area, and control-unit interface.
• Inspect the power terminals for heat discoloration or loose hardware.
• Check the integrated blower for contamination or mechanical noise.
• Inspect the enclosure for impact damage, cracks, drilled holes, or evidence of modification.
• Preserve any original configuration labels attached to the drive.

This exact type code is also listed by industrial automation distributors as R911298373 / 298373.

2. Electrical Pre-Test

Keep the converter completely isolated from mains power during initial inspection.

Check:

• Mains terminals
• Motor-output terminals
• DC-bus terminals
• Protective earth connection
• Control-unit connector
• Cooling blower
• Visible PCB contamination
• Signs of overheating
• Capacitor-area damage
• Connector damage or corrosion

A Fluke multimeter or comparable industrial meter can be used for preliminary checks for obvious shorts and abnormal resistance. It does not, by itself, establish that the power stage is healthy.

Do not apply arbitrary insulation-test voltages to electronic control circuitry.

3. Control Configuration Verification

Before replacing a working , record the complete control architecture.

Verify:

• Control-unit type
• Firmware identification
• Motor model
• Encoder technology
• Encoder cable and connector
• Communication interface
• Machine parameter set
• Motor current limits
• Acceleration/deceleration settings
• Safety configuration
• Existing fault history

The family is designed around a control-unit slot that provides interfaces for the automation environment, encoder systems, safety technology, and additional digital/analog functions. The same W0054 power section can therefore appear in different complete drive configurations.

4. Functional Test

For a controlled bench or machine test:

• Verify the supply arrangement before energization.
• Confirm the correct control unit is installed.
• Confirm firmware and parameter availability.
• Check drive initialization.
• Confirm controller communication.
• Verify motor feedback recognition.
• Check motor phase assignment.
• Confirm safety circuits before torque enable.
• Run initially at low speed and low mechanical load.
• Monitor motor current and drive temperature.
• Check blower operation.
• Review diagnostic and fault information.

A unit that merely powers up should not be described as fully tested.

5. Extended Heat Run

For a critical spare, perform an extended controlled run appropriate to the drive and motor.

Record:

• AC input voltage
• Motor current
• Drive temperature
• Blower operation
• DC-bus behavior
• Encoder feedback
• Communication status
• Fault history

After testing, document the tested configuration and package the converter using ESD-safe protection.

 

Field Engineer’s Pitfall Guide

❗ 54 A peak does not mean 54 A continuous

The 54 A figure is the maximum device current. The published continuous current is 20.6 A. The difference is substantial and becomes important when the machine has long acceleration periods, high continuous torque, or restricted cabinet cooling.

Do not size the replacement by taking the old motor’s peak current and comparing it directly with the 54 A headline number.

❗ Power-choke assumptions can change the usable power

Bosch Rexroth data lists 7 kW continuous power without a choke and 10 kW with a power choke. Maximum power is listed as 12 kW without a choke and 16 kW with one. Therefore, the machine’s actual mains and choke arrangement should be recorded before changing the power section.

A replacement drive can have the correct current class yet still be installed into the wrong line configuration.

❗ Do not assume NNNN tells the whole machine configuration

The complete system can include a separate control unit and application-specific firmware, encoder evaluation, communications, and safety functions. .1E-W0054-A-03-NNNN identifies this particular power-section configuration; it does not replace the need to verify the rest of the drive system.

For a migration strategy, copy the original parameter set and record the control-unit and firmware identification before removing a functioning drive.

 

Intent-Driven FAQ

Is .1E–A-03-NNNN a servo drive?

It is a Bosch Rexroth IndraDrive C compact converter / drive power section used in single-axis industrial motion systems. The platform is designed around a power section with an associated control-unit architecture.

What is the current rating?

The maximum device current is 54 A, while the published continuous current is 20.6 A. These ratings should not be treated as equivalent when sizing for continuous machine operation.

What is the continuous power rating?

Published data gives 7 kW continuous power without a power choke and 10 kW with a power choke. Maximum power is listed at 12 kW without a choke and 16 kW with one.

What input voltage does this use?

The published specification allows 3-phase 200–500 VAC and lists 1-phase 200–250 VAC for the configuration. Nominal mains frequency is 50–60 Hz. Verify the actual machine wiring and installation requirements before energization.

What does the 03 portion of the type code mean?

The complete type code must be retained for identification, but I would not use an abbreviated third-party interpretation of every individual character as a substitute for the Bosch Rexroth type-code documentation. The important procurement identifier is the complete / R911298373 combination.

Does the .1E- have forced-air cooling?

Yes. Published specifications identify internal air cooling through an integrated blower/axial fan. A used unit should therefore be checked for fan contamination, bearing noise, and restricted cabinet airflow before being returned to service.

Is it interchangeable .1E–NNNV?

Not automatically. The NNNN and NNNV suffixes represent different configurations/material records. The complete type code, control hardware, firmware, safety configuration, and machine parameters should be compared before treating either unit as a replacement. The family documentation and current parts records list both configurations separately.

 

Procurement Note

For an industrial purchase order, specify:

Bosch Re — Material No. R911298373

Do not shorten the requirement to . The complete type code is the safer purchasing identifier.

For in-stock, factory-sealed, surplus, or refurbished inventory, request a clear photograph of the nameplate and confirm the serial number, hardware revision, control-unit configuration, blower condition, and available firmware/parameter documentation. For a critical machine spare, ask for evidence of functional testing rather than accepting a simple power-on claim.