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

Parameter Name	Specification / Inference
Product Model	HCS02.1E-W0070-A-03-NNNN
Manufacturer	Bosch Rexroth
Product Type	Digital Frequency Converter / AC Drive
Rated Power	W0070: Likely indicates a 0.75 kW (1 HP) or 7.5 kW (10 HP) motor rating. The “70” often corresponds to 0.75kW in some series and 7.5kW in others. The correct rating must be verified with the data plate or catalog.
Input Voltage	A-03: Specifies 3-phase, 400V AC (380-480V), 50/60 Hz input.
Output Current	Specific to the power rating (e.g., ~2.1 A for 0.75kW, ~18 A 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	Digital and analog inputs/outputs (standard set).
Communication Interface	Integrated serial interface (RS-485, Modbus RTU). Support for optional fieldbus cards (PROFIBUS DP, PROFINET, EtherNet/IP).
Programming	Via integrated keypad or Rexroth IndraWorks software.
Protections	Overcurrent, overvoltage, undervoltage, overload, short circuit, ground fault, motor overtemperature, drive overtemperature.
Enclosure Rating	IP20 (chassis type).
Operating Temperature	0 to 50 °C (derating above 40°C).
Certifications	CE, cULus, RoHS.
Suffix “NNNN”	Standard configuration with no special factory options selected for those option positions.

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Description

Product Overview

The REXROTH HCS02.1E-W0070-A-03-NNNN is a configurable, compact digital frequency converter (AC drive) from Bosch Rexroth’s drive portfolio, engineered for precise speed and torque control of three-phase AC induction motors. This model represents a specific factory configuration of the HCS02.1E platform, as defined by its detailed suffix code. It is designed to provide efficient, reliable, and dynamic control for pumps, fans, conveyors, and general machinery. The drive converts fixed-frequency AC mains power into a variable voltage and frequency output, enabling smooth motor operation, energy savings, and enhanced process control. Its robust design incorporates sensorless vector control, comprehensive protection features, and flexible I/O, making it a versatile solution for industrial automation. The suffix -W0070-A-03-NNNN specifies its exact power rating, input voltage, and standard configuration (with “NNNN” typically indicating no special options selected for those positions). This drive exemplifies Bosch Rexroth’s commitment to providing intelligent, high-quality motor control solutions.

Technical Specifications (Decoded from Model Suffix)

Parameter Name	Specification / Inference
Product Model	HCS02.1E-W0070-A-03-NNNN
Manufacturer	Bosch Rexroth
Product Type	Digital Frequency Converter / AC Drive
Rated Power	W0070: Likely indicates a 0.75 kW (1 HP) or 7.5 kW (10 HP) motor rating. The “70” often corresponds to 0.75kW in some series and 7.5kW in others. The correct rating must be verified with the data plate or catalog.
Input Voltage	A-03: Specifies 3-phase, 400V AC (380-480V), 50/60 Hz input.
Output Current	Specific to the power rating (e.g., ~2.1 A for 0.75kW, ~18 A 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	Digital and analog inputs/outputs (standard set).
Communication Interface	Integrated serial interface (RS-485, Modbus RTU). Support for optional fieldbus cards (PROFIBUS DP, PROFINET, EtherNet/IP).
Programming	Via integrated keypad or Rexroth IndraWorks software.
Protections	Overcurrent, overvoltage, undervoltage, overload, short circuit, ground fault, motor overtemperature, drive overtemperature.
Enclosure Rating	IP20 (chassis type).
Operating Temperature	0 to 50 °C (derating above 40°C).
Certifications	CE, cULus, RoHS.
Suffix “NNNN”	Standard configuration with no special factory options selected for those option positions.

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 good speed regulation without an encoder, suitable for variable torque (pumps, fans) and constant torque applications. The drive features programmable acceleration/deceleration ramps, multiple preset speeds, and a built-in PID controller for closed-loop process control. It is designed for ease of use with a removable control panel for parameterization and diagnostics. The integrated serial interface supports connectivity for network integration. Advanced energy-saving functions optimize motor magnetization under partial load. The robust design ensures reliable performance in industrial environments.

Application Fields

The drive is deployed in various industries for variable speed applications:

HVAC: Control of fans, pumps, and compressors.
Water & Wastewater: Pump and aerator control.
Material Handling: Conveyors, mixers, hoists.
General Industry: Packaging, food & beverage, textiles, and machine tools.