Description
Key Technical Specifications
| Parameter | Value / Specification |
| Manufacturer | Bosch Rexroth |
| Part Number | HCS02.1E-W0054-A-03-NNNN |
| Material Number | R911298372 |
| Drive Architecture | IndraDrive C Compact Converter (HCS02.1 Line) |
| Cooling Mode | Air Internal, integrated blower (W) |
| Maximum Current (I_{max}) | 54 A |
| Continuous Current (I_{cont}) | ~18 A – 22 A (depending on switching frequency) |
| Mains Input Voltage | 3 AC 200 V to 500 V (±10%), 50/60 Hz |
| DC Bus Voltage | 300 V DC to 750 V DC |
| Protection Category | IP20 (NEMA 1 equivalent) |
| Configuration / Option | Standard “A-03-NNNN” (Internal DC bus connection, standard enclosure) |
| Option Slots | Supports 2 configurable control section options (e.g., ADVANCED/BASIC controls) |
Product Introduction & Supply Chain Strategy
The Bosch Rexroth HCS02.1E-W0054-A-03-NNNN is a compact IndraDrive C single-axis converter that integrates power supply and control electronics into a single space-saving housing. Designed for high-dynamic rotary and linear servo motor applications, it provides precise velocity, position, and torque control across automated printing, packaging, machine tools, and material handling systems.
Maintaining a New Surplus HCS02.1E-W0054-A-03-NNNN drive in your spare parts inventory provides immediate insurance against unplanned multi-shift downtime. Factory lead times for legacy Rexroth HCS drives can stretch for months during component shortages. Sourcing a genuine New Surplus unit ensures unaged internal DC bus capacitors, factory-fresh power IGBT modules, and pristine terminal interfaces—eliminating the severe thermal degradation and premature failure risks associated with second-hand or refurbished drives.
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Perform full Lock-Out/Tag-Out (LOTO) procedures on the 3-phase AC mains supply and high-voltage DC bus lines.
- DANGER: Wait a minimum of 5 minutes after disconnecting power to allow internal DC bus capacitors to discharge below 50 V DC. Measure the DC bus terminals (+Bus / -Bus) with a calibrated multimeter to confirm zero voltage before touching any connection.
- Wear a grounded ESD wrist strap before handling the drive’s plugged-in control section module or memory cards.
- Record all DIP switch addresses, bus jumper settings, and cable labels from the old drive.
Stage 2: Removal
- Unplug the motor power plug, mains connector, braking resistor terminals, and ground straps.
- Disconnect control wiring, encoder feedback cables, and fieldbus communication connectors (SERCOS, Profibus, Ethernet/IP).
- Unscrew the top and bottom mounting bolts securing the HCS02.1 frame to the cabinet backplane, then lift the drive vertically off the keyhole slots.
Stage 3: Installation (Clone & Seat)
- Mount the new Bosch Rexroth HCS02.1E-W0054-A-03-NNNN unit vertically onto the cabinet panel, ensuring adequate clearance (minimum 80 mm top/bottom) for airflow.
- Transfer the plug-in Control Section card (e.g., BASIC or ADVANCED controller) and the micro-SD / firmware parameter card from the old drive into the new power unit.
- Torque all power and ground terminals to manufacturer specs (M4/M5 screws) to prevent high-resistance thermal hot spots.
Stage 4: Power-On & Testing
- Re-check 3-phase line power, motor phase wiring (U, V, W), and earth grounding continuity.
- Apply 24 V DC auxiliary control power first. Confirm the display on the control section lights up and reads bb (AF / Base Readiness / Ready for Mains).
- Energize 3-phase mains voltage. Clear any pending warning codes, download parameter backups if required via Rexroth IndraWorks software, and run a low-speed jog test on the motor.

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

HCS02.1E-W0054-A-03-NNNN
Firmware/Software Versions & Upgrade Notes
- Firmware Separation: The .1E-W0054-A-03-NNNN represents the power section hardware. Its operational firmware (FWA-INDRV*-…) resides on the plug-in Control Section card (e.g., CSB01, CSH01) and its pluggable memory module.
- Firmware Compatibility: Ensure the firmware version on the memory card matches the motor type and drive parameters. If swapping only the power base card, the existing control card and memory module can usually be transferred directly.
- Parameter Mismatch Risk: Operating the drive with an mismatched motor parameter file can cause immediate overcurrent faults (F2078 or F8078) or unstable current loop oscillations.
- Upgrade Warning: Always perform a full parameter backup using IndraWorks before flashing firmware or migrating settings between different control section hardware revisions.
Frequently Asked Questions (FAQ)
Q: How can I be sure this Bosch Rexroth .1E-W0054-A-03-NNNN is brand new surplus?
A: Every unit we supply is 100% unused Brand New Surplus. It comes in original Rexroth factory packaging, featuring clean mounting brackets, untouched terminal block screws, zero DC bus terminal scoring, intact factory serial labels, and factory quality-control seals. It has never been installed or energized in a production environment.
Q: Why is New Surplus a better investment than a refurbished drive?
A: Refurbished servo drives often retain aged electrolytic DC bus capacitors and power semiconductors that have suffered years of thermal stress. When a refurbished drive fails under load, it can cause secondary damage to motor windings or upstream power supplies. Our New Surplus inventory offers pristine factory components, an expected service life of 10–15 years, and complete reliability.
Q: Does this unit include the plug-in Control Section card and display?
A: The part number .1E- specifies the compact power unit housing. Depending on the ordering package, control section cards (such as CSB01.1N or CSH01.1N) are either installed separately or transferred from your existing unit. Contact our team to confirm if you need a complete power + control assembly.
Q: What does the “W0054” designation mean in the model number?
A: “W” indicates internal air cooling via an integrated fan assembly, and “0054” specifies the peak current rating of 54 Amps.
Q: Is it safe to hot-swap or unplug connectors while 24 V DC or Mains power is active?
A: No. Disconnecting power or feedback cables while the drive is energized can cause electrical arcing, permanently damaging the sensitive encoder input electronics and triggering high-voltage fault cascades.
Q: What warranty is included with this Rexroth servo drive?
A: We provide a full 1-Year Warranty on all New Surplus Bosch Rexroth .1E- units. Each drive is visually inspected and electrically tested prior to shipment.

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