Description
Bosch Rexroth HCS01.1E-W0018-A-03-B-ET-EC-NN-L3-NN-FW
Product Introduction
The HCS01.1E-W0018-A-03-B-ET-EC-NN-L3-NN-FW is a Bosch Rexroth IndraDrive Cs HCS01 compact converter built for single-axis motion applications where the drive, feedback evaluation, network communication, and safety interface need to fit into a relatively small control-cabinet footprint. The 18 A peak-current class gives this unit considerably more application headroom than the smaller HCS01 variants, while the BASIC control section keeps the configuration oriented toward conventional single-axis drive duties.
This particular type code is R911338289, and its configuration matters. It uses MultiEthernet communication, a multi-encoder interface, and the L3 safety option providing Safe Torque Off (STO). Bosch Rexroth documentation lists 3-phase 200–500 VAC ±10% mains input, 18 A maximum device current, 7 A continuous current, and a 3 × AC 0–230 V output. The published continuous power without a choke is approximately 1.7 kW, with maximum power listed around 4.8 kW depending on operating conditions.
For retrofit work, do not treat the long type code as cosmetic. An HCS01.1E-W0018 with a different safety suffix, control-section designation, communication option, or firmware package can have materially different commissioning requirements. Bosch’s own GoTo documentation specifically lists R911338289 for this exact L3 configuration.
HCS01.1E-W0018-A-03-B-ET-EC-NN-L3-NN-FW
Key Technical Specifications
- Manufacturer: Bosch Rexroth
- Series: IndraDrive Cs HCS01
- Exact Type Code: .1E-W0018-A-03-B-ET-EC-NN-L3-NN-FW
- Material Number: R911338289
- Drive Configuration: Single-axis compact converter
- Control Section: BASIC
- Peak Device Current: 18 A
- Continuous Current: 7 A
- 3-Phase Mains Supply: 200–500 VAC ±10%
- Single-Phase Supply Capability: 110–230 VAC is listed for the -W0018 family configuration; verify the machine’s actual wiring and application before using single-phase input.
- Output Voltage: 3 × AC, 0–230 V
- Nominal Mains Frequency: 50–60 Hz
- Maximum Output Frequency: Up to 1600 Hz at the 16 kHz switching-frequency configuration
- Continuous Power Without Choke: Approximately 1.7 kW
- Maximum Power Without Choke: Approximately 4.8 kW
- Communication: MultiEthernet
- Encoder Evaluation: Multi-encoder interface
- Encoder Interface: IndraDyn/Hiperface/EnDat 2.1/2.2 support is reported for this configuration
- Encoder Emulation: Present
- Safety Function: Safe Torque Off (STO), L3
- Cooling: Internal air cooling / integrated blower
- Protection Rating: IP20
- Dimensions: Approximately 70 × 220 × 268 mm
- Weight: Approximately 2.1 kg
- Installation Height: Maximum permissible installation height reported as 1,000 m above sea level
The published figures above should be used as application-screening values, not as a substitute for the machine-specific Rexroth sizing calculation. Motor current, duty cycle, switching frequency, ambient temperature, cabinet cooling, braking energy, and installation altitude all affect the usable operating envelope.
Global Sourcing & Live-Test SOP
For procurement of a .1E-W0018-A-03-B-ET-EC-NN-L3-NN-FW, the first inspection should be the physical nameplate. Confirm the complete type code rather than accepting a shortened description such as “ 18A.” The final suffixes distinguish safety and configuration details.
1. Inbound Verification
- Photograph the complete Bosch Rexroth nameplate before unpacking.
- Confirm R911338289 against the physical material number.
- Match the complete type code character-for-character.
- Record serial number, hardware revision, and production information.
- Inspect power terminals, motor terminals, control connectors, encoder interface, and Ethernet interfaces for deformation or corrosion.
- Check mounting ears and cabinet ventilation paths for impact damage.
- For used equipment, inspect the cooling blower for contamination, bearing noise, and restricted airflow.
- Trace available OEM paperwork where possible, including previous drive configuration and firmware records.
2. Electrical Inspection
Before energizing, check the DC bus and power section for obvious damage or contamination. Verify insulation and terminal condition using an appropriate industrial test procedure; do not apply arbitrary megger voltages directly to electronic control circuits.
For a used unit, inspect the drive with the power isolated first. A Fluke multimeter or equivalent industrial meter is useful for checking obvious shorts and supply-side abnormalities, but resistance readings alone do not prove that a servo drive is serviceable.
3. Communication and Feedback Test
Confirm that the intended controller actually supports the MultiEthernet configuration installed in the drive. The physical Ethernet connector does not, by itself, tell you which automation protocol is active.
For the motor feedback circuit, identify the exact motor encoder technology before commissioning. The multi-encoder interface supports multiple feedback technologies, but the motor/encoder combination, cable, connector wiring, and firmware configuration still have to agree.
4. Functional Run
Where the appropriate motor, controller, and safety circuit are available:
- Load the documented firmware/configuration.
- Confirm the drive is recognized by the engineering environment.
- Verify encoder identification and feedback direction.
- Check motor phase assignment.
- Confirm STO input behavior before enabling torque.
- Run the motor at low speed without load.
- Check actual current against expected motor data.
- Monitor drive temperature and cooling-fan operation.
- Verify network diagnostics and fault history.
- Perform a controlled load test appropriate to the application.
5. 24-Hour Heat Run
For a high-value replacement or critical spare, a controlled extended run is preferable to a simple power-on test. Record:
- Input voltage
- Motor current
- Drive temperature
- Fan operation
- DC-bus behavior
- Communication status
- Encoder feedback
- Fault/alarm history
Finish by recording the tested firmware and parameter set, then package the drive in ESD-safe protective material.
Field Engineer’s Pitfall Guide
❗ Firmware is part of the application—not an accessory
The type code ends in FW, and Bosch Rexroth documentation specifies that firmware must be ordered/selected separately. Multiple firmware materials are associated with this hardware family. A physically correct .1E–A-03-B-ET-EC-NN-L3-NN-FW can therefore still be the wrong spare if the required firmware package is missing or incompatible with the existing machine configuration.
For a migration strategy, capture the existing firmware identification and parameter set before replacing the drive whenever the original unit is still accessible.
❗ Do not substitute another 18 A drive by current rating alone
The family contains visually similar 18 A units with different configuration codes. The L3 version is specifically associated with Safe Torque Off; other suffixes can specify different safety functions or none at all. For example, the L4 variant adds Safe Brake Control, while a conventional NN configuration does not have the same safety configuration.
If the machine safety circuit depends on STO, replacing this drive with a superficially similar can change the safety architecture.
❗ Encoder and motor compatibility must be checked at connector level
The drive provides multi-encoder evaluation, but that does not eliminate the need to verify the actual motor feedback technology, cable, connector wiring, and parameterization. A replacement that powers up normally can still generate feedback faults or incorrect commutation if the encoder configuration is wrong.
Do not assume the previous motor’s feedback system from the motor frame size alone. Record the complete motor type and existing drive parameters before commissioning.
Intent-Driven FAQ
Is .1E–A-03-B-ET-EC-NN-L3-NN-FW a servo drive?
Yes. It is a Bosch Rexroth IndraDrive Cs single-axis compact converter intended for electric motor and motion-control applications. It combines the control and power sections in a compact drive package.
What is the current rating of the .1E-?
The device peak-current rating is 18 A, while the published continuous current is 7 A. Do not interpret 18 A as a continuous motor-current rating for every operating condition. Actual sizing depends on motor data, duty cycle, cooling, switching frequency, and application conditions.
What does the L3 suffix mean?
For this configuration, L3 identifies the Safe Torque Off (STO) safety function. It is an important configuration characteristic, particularly when the drive is installed as part of a machine safety circuit.
Does this drive include firmware?
The hardware type is ordered with firmware selected separately. Bosch Rexroth material records associate multiple firmware packages with R911338289, so buyers should not assume that an .1E- hardware unit is immediately application-ready without verifying its firmware status.
Can I replace another 18 A unit with this model?
Not automatically. Compare the complete type code, material number, safety configuration, communication configuration, encoder requirements, firmware, and existing machine parameters. Current documentation lists several 18 A variants with materially different suffixes.
suitable for cabinet installation?
Yes, subject to the manufacturer’s installation requirements. The unit is specified as IP20, approximately 70 × 220 × 268 mm, with internal air cooling. Cabinet airflow and thermal management therefore matter; IP20 is not an enclosure rating for direct exposure to dust, water, or washdown conditions.
What should I verify when buying a used unit?
Verify the complete type code, R911338289, serial/nameplate information, hardware condition, cooling fan, terminal condition, firmware, parameter retention, safety configuration, and encoder interface. For a critical machine spare, request evidence of powered functional testing rather than accepting “powers on” as a complete test.
Procurement Note
For industrial replacement purchasing, specify the ype code and R911338289 material number on the purchase order. Do not reduce the requirement to “Bosch Rexroth 18 A.”
For in-stock, factory-sealed, surplus, or refurbished inventory, request clear photographs of the nameplate and firmware information before payment. A clean enclosure is not evidence of correct firmware or machine compatibility (this is where many supposedly simple drive replacements become commissioning problems).
