Description
Rexroth DKC01.3-040-7-FW
Technical Specifications
Brand: Bosch Rexroth (Indramat)
Product Series: ECODRIVE DKC
Product Model: DKC01.3-040-7-FW
Product Type: Compact Servo Drive Controller
Rated Current: 40 A class (specific current rating depends on exact variant)
Supply Voltage: 3-phase AC 200-480 V (typical for ECODRIVE DKC series)
Control Voltage: 24 V DC
Output Frequency: Variable frequency output for servo motor control
Protection Rating: IP20
Cooling Method: Natural air cooling (convection)
Operating Temperature: 0°C to 45°C (32°F to 113°F)
Storage Temperature: -20°C to 70°C (-4°F to 158°F)
Relative Humidity: 5% to 95% (non-condensing)
Communication Interface: Integrated fieldbus or analog interface depending on variant configuration
Certification Standards: CE, UL, CSA compliant
Functional Features
Integrated Drive Control: Combines power electronics and digital control in a single compact unit for space-efficient installation
Programmable Firmware: Firmware-based functionality allows configuration and updates via software tools
Multiple Control Modes: Supports position control, speed control, and torque control modes for flexible application adaptation
Analog and Digital I/O: Integrated analog and digital input/output terminals for direct connection to sensors and switches
Fieldbus Communication: Supports various fieldbus protocols depending on the specific interface variant (e.g., Profibus-DP, SERCOS, CANopen)
Auto-Tuning: Built-in auto-tuning functions for simplified commissioning and optimization of servo motor performance
Diagnostic Functions: Comprehensive self-diagnostics and fault logging for rapid troubleshooting
Safety Features: Over-current protection, over-voltage protection, short-circuit protection, and motor thermal protection
Compact Design: Space-saving form factor suitable for control cabinets with limited space
Application Scenarios
Machine Tools: CNC machining centers, lathes, milling machines, and grinding machines requiring precise axis control
Packaging Machinery: Form-fill-seal machines, labeling machines, and cartoners requiring synchronized motion control
Robotics: Industrial robot joint control and articulated arm motion systems
Textile Machinery: Winding, unwinding, and tension control applications
Material Handling: Conveyor systems, pick-and-place units, and automated storage and retrieval systems
Printing Machinery: Registration control and web handling in printing presses
Assembly Automation: Precision positioning in automated assembly and testing equipment
Performance Parameters
Control Loop Cycle Time: Sub-millisecond current loop and fast position/speed loop execution
Positioning Accuracy: High-resolution encoder feedback enables micron-level positioning precision
Speed Control Range: Wide speed control range with stable operation at low speeds
Torque Response: Fast torque response for dynamic load changes and rapid acceleration/deceleration
Communication Speed: High-speed fieldbus or digital interface for real-time data exchange
Reliability: Engineered for continuous industrial operation with high mean time between failures
Material Composition
Industrial-grade multi-layer printed circuit board with surface-mounted power electronics components, IGBT or MOSFET power modules for motor drive output, digital signal processor (DSP) for control algorithm execution, precision gate driver circuitry, current sensing resistors and Hall-effect sensors, electrolytic and film capacitors for DC bus filtering, aluminum heatsink for passive heat dissipation, reinforced polymer or metal housing, flame-retardant materials compliant with UL94 standards
Structural Features
Compact rectangular housing designed for DIN rail or panel mounting, integrated aluminum heatsink for passive cooling, front-panel LED indicators for power, ready, fault, and communication status, pluggable terminal blocks for motor power connections, control voltage terminals, and I/O signals, fieldbus or communication connector depending on variant, mounting holes or DIN rail clips for secure installation, ventilation slots for natural convection cooling, clearly labeled terminals and connectors for easy wiring
Working Principle
The DKC01.3-040-7-FW receives three-phase AC power and rectifies it to a DC bus voltage. The digital control processor executes motion control algorithms, receiving position, speed, or torque commands from the higher-level controller via fieldbus or analog inputs. Encoder feedback from the servo motor is processed to close the position and speed control loops. The controller generates PWM signals that drive the IGBT power module, converting the DC bus voltage into a variable-frequency, variable-amplitude three-phase output to precisely control the servo motor. The integrated I/O channels handle discrete and analog signals for limit switches, enable signals, and other auxiliary functions. The firmware-based architecture allows the drive’s behavior to be configured and optimized through Rexroth’s engineering software tools. Built-in protection circuits continuously monitor current, voltage, and temperature, shutting down the drive if abnormal conditions are detected to protect both the drive and the motor.
Installation Requirements
Verify the drive is undamaged and all accessories including terminal blocks and documentation are complete before installation
Mount the drive securely on a DIN rail or panel in a control cabinet with adequate ventilation for natural convection cooling
Maintain minimum clearance distances around the drive as specified in the Rexroth installation manual to ensure proper heat dissipation
Connect the three-phase AC power supply to the designated power input terminals using appropriately sized cables
Connect the servo motor power cables to the motor output terminals, ensuring correct phase sequence
Connect the motor encoder cable to the encoder feedback connector
Connect the 24 V DC control voltage to the designated control power terminals
Connect fieldbus or communication cables if using networked control
Connect any required analog and digital I/O signals to the terminal blocks
Ensure proper grounding of the drive, motor, and control cabinet in accordance with electrical safety standards
Configure drive parameters using Rexroth’s engineering software (e.g., IndraWorks) before commissioning
Perform motor identification and auto-tuning procedures as specified in the documentation
Usage Precautions
Do not apply power to the drive until all wiring connections are verified and secure
Ensure the motor and encoder cables are properly shielded and grounded to prevent electromagnetic interference
Do not exceed the rated current and voltage specifications of the drive
Allow adequate cooling time after power-off before handling the drive, as the heatsink and internal components may remain hot
Regularly check the LED indicators for fault conditions and address any alarms promptly
Back up drive parameter settings before making changes to the configuration
Keep the drive clean and free of dust accumulation that could impair heat dissipation
Handle the drive with care during installation to avoid electrostatic discharge damage to sensitive electronic components
Refer to the official Bosch Rexroth ECODRIVE documentation for detailed parameter settings, fault codes, and troubleshooting procedures
Contact Rexroth technical support for application-specific configuration guidance
