Rexroth HNL01.1E-0200-N0125-A-480-NNNN Choke for IndraDrive

Rexroth HNL01.1E-0200-N0125-A-480-NNNN: Mains Choke for IndraDrive

The Bosch Rexroth HNL01.1E-0200-N0125-A-480-NNNN is a high-performance mains choke module engineered for seamless integration within the Bosch Rexroth IndraDrive servo drive platform. In modern industrial automation, a mains choke is not merely a passive component — it serves as a critical interface between the facility power supply and the drive system’s DC bus, suppressing harmonic distortion, limiting inrush current, and protecting sensitive power electronics from voltage transients. This module is purpose-built for three-phase 480 VAC supply networks and is rated for a nominal current of 200 A, making it suitable for medium- to high-power IndraDrive configurations found in precision manufacturing, packaging, material handling, and process automation environments.

Within the layered architecture of an IndraDrive system, the HNL01.1E-0200-N0125-A-480-NNNN operates at the power conditioning layer, positioned upstream of the supply module and downstream of the main circuit breaker. Its role is to ensure that the DC bus voltage delivered to the inverter modules remains stable and free from high-frequency noise, which directly impacts the accuracy and responsiveness of the connected servo motors. By attenuating line-side harmonics, this choke also helps the installation comply with IEC 61000-3-12 and IEEE 519 standards for harmonic emissions — a requirement increasingly enforced in industrial facilities worldwide.

Product Specification Table

System Compatibility Notes

The effectiveness of the HNL01.1E-0200-N0125-A-480-NNNN is best understood in the context of a complete IndraDrive system architecture. At the heart of such a system is the HCS02.1E-W0210 supply module, which rectifies the incoming three-phase AC power and generates the regulated DC bus that feeds all downstream inverter modules. The mains choke sits directly between the facility supply and this HCS supply module, forming the first line of defense against power quality issues. Without it, the supply module would be exposed to unfiltered line transients and would itself generate excessive harmonic currents back into the plant network.

Downstream of the supply module, individual axis drives such as the HMS01.1N-W0150 single-axis inverter convert the DC bus energy into precisely controlled multi-phase currents for each servo motor. In a typical multi-axis machine — for example, a six-axis packaging robot or a coordinated web-handling line — several HMS inverter modules share the same DC bus, and the stability of that bus is directly dependent on the quality of the upstream power conditioning provided by the HNL01 choke.

The system controller, often a CML45.1-3P-504-NA-NNNN IndraDrive control unit or an external PLC communicating via SERCOS III, orchestrates the motion profiles and torque commands for each axis. Any voltage ripple or harmonic-induced noise on the DC bus can propagate through the inverter stage and manifest as torque ripple or position error at the motor shaft. By inserting the HNL01.1E-0200-N0125-A-480-NNNN at the supply input, engineers effectively decouple the drive system from the vagaries of the plant power grid, ensuring that the control algorithms running on the CML controller or the connected PLC can achieve their intended precision.

For systems that require regenerative braking maintenance planning, a HLR01.1N-02K0-N04R0-A-007-NNNN regenerative resistor module may be installed on the DC bus alongside the supply module. The mains choke complements this arrangement by preventing regenerative energy from feeding back into the supply in an uncontrolled manner, which could otherwise cause overvoltage events on the line side.

In larger installations, multiple IndraDrive cabinets may be networked together using SERCOS III fiber-optic communication rings, with each cabinet containing its own HCS supply module and HNL mains choke. The CSB02.1N-SE-ENS-NNN-L1-S-NN-FW SERCOS interface module in each drive ensures deterministic, real-time communication between the master controller and all axes, while the per-cabinet mains choke guarantees that power quality issues in one section of the plant do not cascade into neighboring drive groups.

Thermal management is another architectural consideration. The HNL01 choke generates modest heat losses at rated current, and its natural convection cooling design means it does not require dedicated fans. However, it should be mounted with adequate clearance — typically 100 mm above and below — within the control cabinet. Engineers should also account for the thermal contribution of adjacent components such as the HMD01.1N-W0036 compact drive modules and the NFD03.1-480-016 mains filter, which may share the same cabinet space. Proper airflow planning ensures that the ambient temperature within the enclosure remains within the choke’s rated operating range.

For facilities that mandate power factor correction or advanced harmonic mitigation beyond what a passive choke provides, the HNL01 can be used in conjunction with an active front-end supply module such as the HCS03.1E-W0210, which actively shapes the input current waveform. In this configuration, the mains choke serves as the coupling inductor between the grid and the active rectifier, and its inductance value becomes a critical parameter in the control loop tuning of the active front end.

Industrial Application Notes

In real-world deployments, the HNL01.1E-0200-N0125-A-480-NNNN finds its place in a wide range of layered automation systems. In automotive body-in-white welding lines, multiple IndraDrive axes coordinate robotic arm movements with sub-millisecond synchronization, and the mains choke ensures that the high dynamic loads of spot-welding robots do not disturb the servo drives sharing the same supply bus. In printing and converting machinery, where web tension must be controlled to micrometer-level accuracy, the power quality provided by the HNL01 choke directly translates into print registration consistency and reduced material waste.

In process industries such as petrochemical and water treatment plants, IndraDrive systems are increasingly used for variable-speed pump and compressor control. Here, the mains choke reduces harmonic pollution that could interfere with sensitive instrumentation on the same electrical network, such as flow meters, pressure transmitters, and SCADA communication links. The choke’s robust construction and wide temperature tolerance also make it suitable for installation in outdoor or semi-sheltered electrical rooms common in these industries.

Mining and metallurgical operations benefit from the HNL01’s ability to handle the voltage fluctuations and supply asymmetries typical of remote or weak grid connections. By smoothing the input current waveform, the choke reduces mechanical stress on upstream transformers and switchgear, extending the service life of the entire electrical infrastructure.

Regardless of the application, specifying the correct mains choke is a fundamental step in system design. An undersized choke leads to excessive harmonic currents and potential drive faults, while an oversized choke introduces unnecessary voltage drop and reduces the available torque at the motor. The HNL01.1E-0200-N0125-A-480-NNNN, with its 200 A / 0.125 mH rating, is precisely matched to IndraDrive supply modules in the 150–210 A class, providing the optimal balance between harmonic attenuation and voltage utilization.

Product Compatibility FAQ

Q1: Can the HNL01.1E-0200-N0125-A-480-NNNN be used with non-Rexroth supply modules or third-party drives?
A1: While the HNL01 is designed and optimized for the Bosch Rexroth IndraDrive platform — specifically for use with HCS02 and HCS03 series supply modules — it is fundamentally a three-phase line reactor with standard electrical characteristics. In principle, it can be used with any drive system that requires a 200 A, 0.125 mH mains choke on a 480 VAC supply. However, for guaranteed system compatibility, firmware interlock recognition, and warranty coverage, Bosch Rexroth recommends using it within the IndraDrive ecosystem. ZYPLC provides a warranty terms confirmed during quotation on this component and can advise on cross-platform compatibility upon request.

Q2: What is the recommended installation position relative to the supply module and mains filter?
A2: The standard architecture places the mains choke between the main circuit breaker (or fused disconnect) and the supply module input terminals. If an NFD-series mains filter is also specified, the typical sequence is: circuit breaker → mains filter → mains choke → supply module. This arrangement ensures that high-frequency EMI is attenuated by the filter before reaching the choke, while the choke handles lower-order harmonics and inrush current limiting. Maintain at least 100 mm clearance on all sides for thermal dissipation, and route power cables away from signal cables to avoid electromagnetic coupling.

Q3: How does ZYPLC support long-term maintenance and spare parts availability for the HNL01 series?
A3: ZYPLC maintains ready stock of the HNL01.1E-0200-N0125-A-480-NNNN and related IndraDrive power conditioning components. Every unit ships with a warranty terms confirmed during quotation covering manufacturing defects and performance degradation under normal operating conditions. For long-term maintenance planning, ZYPLC recommends periodic thermal imaging inspections of the choke’s winding and terminal connections, particularly in high-vibration or high-ambient-temperature environments. Replacement units can typically be dispatched within 24–48 hours to minimize production downtime. Contact our engineering team at plc.sales@zyplc.com or +86 19859288691 for system-level consultation and bulk procurement pricing.