HCS02.1E-W0070-A-03-NNNN R911298372 Digital Frequency Converter / AC Drive

Parameter Name	Specification / Inference
Product Model	HCS02.1E-W0070-A-03-NNNN
Article Number	R911298372
Manufacturer	Bosch Rexroth
Product Type	Digital Frequency Converter / AC Drive
Rated Power	W0070: Likely indicates 0.7 kW or 7 kW output power (common in this series; “70” often corresponds to 0.75kW/1HP or 7.5kW/10HP context).
Input Voltage	A-03: Typically specifies a 3-phase, 400V AC (380-480V), 50/60 Hz input.
Output Current	Specific to the power rating (e.g., ~2.1A for 0.75kW, ~18A for 7.5kW at 400V).
Control Technology	Sensorless Vector Control (SLVC) and V/f control.
Overload Capacity	Typically 150% for 60 seconds.
Control I/O	Multiple digital and analog inputs/outputs (standard complement).
Communication Interfaces	Integrated RS-485 (Modbus RTU) or optional fieldbus via plug-in modules (PROFIBUS DP, PROFINET, EtherNet/IP).
Programming	Via integrated keypad or Rexroth IndraWorks engineering software.
Protections	Overcurrent, overvoltage, undervoltage, overload, short circuit, ground fault, motor overtemperature (via PTC/KTY input), drive overtemperature.
Enclosure Rating	IP20 (chassis type) for cabinet mounting.
Operating Temperature	0 to 50 °C (with derating above 40°C).
Certifications	CE, cULus, RoHS.
Suffix “NNNN”	Indicates a series of “N” options, meaning no special factory options selected for those positions (standard configuration).

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Description

Product Overview

The REXROTH HCS02.1E-W0070-A-03-NNNN R911298372 is a highly configurable, compact digital frequency converter (AC drive) engineered for precise speed and torque control of three-phase AC induction motors. Part of Bosch Rexroth’s HCS (Hydrostatic Closed Loop) or more likely, the IndraDrive family lineage (as “HCS” may denote a specific functional variant), this advanced drive is designed to deliver efficient, reliable, and dynamic motor performance in industrial automation applications. The REXROTH HCS02.1E-W0070-A-03-NNNN converts fixed mains power into a variable voltage and frequency output, enabling smooth acceleration, deceleration, and continuous speed regulation. Its sophisticated design incorporates sensorless vector control, comprehensive protective features, and flexible I/O, making it an ideal solution for optimizing pump, fan, conveyor, and general machinery drives. The extensive suffix code (W0070-A-03-NNNN) specifies its exact voltage rating, power, firmware options, and special configurations, while R911298372 is the unique article number. This drive exemplifies Bosch Rexroth’s commitment to providing intelligent, robust, and seamlessly integrable motion control solutions that enhance energy efficiency, process control, and machine reliability.

Technical Specifications (Decoded from Model Suffix)

Parameter Name	Specification / Inference
Product Model	HCS02.1E-W0070-A-03-NNNN
Article Number	R911298372
Manufacturer	Bosch Rexroth
Product Type	Digital Frequency Converter / AC Drive
Rated Power	W0070: Likely indicates 0.7 kW or 7 kW output power (common in this series; “70” often corresponds to 0.75kW/1HP or 7.5kW/10HP context).
Input Voltage	A-03: Typically specifies a 3-phase, 400V AC (380-480V), 50/60 Hz input.
Output Current	Specific to the power rating (e.g., ~2.1A for 0.75kW, ~18A for 7.5kW at 400V).
Control Technology	Sensorless Vector Control (SLVC) and V/f control.
Overload Capacity	Typically 150% for 60 seconds.
Control I/O	Multiple digital and analog inputs/outputs (standard complement).
Communication Interfaces	Integrated RS-485 (Modbus RTU) or optional fieldbus via plug-in modules (PROFIBUS DP, PROFINET, EtherNet/IP).
Programming	Via integrated keypad or Rexroth IndraWorks engineering software.
Protections	Overcurrent, overvoltage, undervoltage, overload, short circuit, ground fault, motor overtemperature (via PTC/KTY input), drive overtemperature.
Enclosure Rating	IP20 (chassis type) for cabinet mounting.
Operating Temperature	0 to 50 °C (with derating above 40°C).
Certifications	CE, cULus, RoHS.
Suffix “NNNN”	Indicates a series of “N” options, meaning no special factory options selected for those positions (standard configuration).

HCS02.1E-W0028-A-03-NNNN

Main Function Description

The REXROTH HCS02.1E-W0070-A-03-NNNN is engineered to provide dynamic and efficient control of standard asynchronous motors. Its sensorless vector control ensures high starting torque and excellent speed regulation across the entire range without a feedback encoder, suitable for most variable torque (pumps, fans) and constant torque applications. The drive features fully programmable acceleration/deceleration ramps (linear and S-curve), multiple preset speeds, and a built-in PID controller for closed-loop process control (e.g., pressure, flow regulation).

The drive is designed for ease of use, featuring a removable control panel with a clear display for parameterization, real-time monitoring, and fault diagnosis. Its flexible I/O allows for seamless integration into existing control systems. The integrated serial interface supports connectivity for higher-level control and monitoring networks. Advanced energy-saving functions automatically optimize the motor magnetization, reducing energy consumption significantly in partial load operations. The robust design ensures reliable performance in electrically noisy industrial environments.

Application Fields

The REXROTH HCS02.1E-W0070-A-03-NNNN is deployed across a wide spectrum of industries for variable speed drive applications. In HVAC systems, it controls fans, pumps, and compressors to optimize energy use. For water and wastewater treatment, it drives pumps and aerators, providing precise flow and pressure control. In material handling, it operates conveyors, mixers, and hoists. The drive is also ideal for packaging machinery, food and beverage processing equipment, textile machines, and general industrial automation requiring reliable and efficient motor speed control. Its compact size and robust feature set make it suitable for both new installations and retrofit projects.