Rexroth DKC01.3-040-7-FW Compact Servo Drive

The Rexroth DKC01.3-040-7-FW is a high-performance servo drive designed to control brushless servo motors in medium-power industrial applications. As part of Rexroth’s DKC series, it serves as the critical link between motion controllers (like the CSH01.3C-ET-ENS-NNN-CCD-NN-S-NN-FW) and servo motors, converting digital command signals into precise mechanical motion. Unlike larger servo drives that require significant cabinet space, this model combines robust power output with a compact footprint, making it ideal for machines where real estate is at a premium.

Model DKC01.3-040-7-FW
Brand Rexroth
Type Compact Servo Drive
Power Supply 3-phase AC 230V ±10%
Continuous Output Current 12A
Peak Output Current 40A (10ms duration)
Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -25°C to 70°C (-13°F to 158°F)
Mounting DIN rail (35mm)
Dimensions 120mm x 180mm x 140mm (W x H x D)
Weight 1.8kg
Interfaces 1 x Serial (RS-485), 2 x analog inputs, 4 x digital inputs, 2 x digital outputs
Motor Compatibility Brushless servo motors (up to 2.5kW)
Certifications CE, UL, cUL, RoHS
Cooling Passive (heat sink)
Control Modes Position, velocity, torque

 

Description

The Rexroth DKC01.3-040-7-FW is a high-performance servo drive designed to control brushless servo motors in medium-power industrial applications. As part of Rexroth’s DKC series, it serves as the critical link between motion controllers (like the CSH01.3C-ET-ENS-NNN-CCD-NN-S-NN-FW) and servo motors, converting digital command signals into precise mechanical motion. Unlike larger servo drives that require significant cabinet space, this model combines robust power output with a compact footprint, making it ideal for machines where real estate is at a premium.

DKC01.3-040-7-FW

DKC01.3-040-7-FW

 

The Rexroth DKC01.3-040-7-FW integrates seamlessly into both standalone systems and networked automation architectures, supporting a range of communication protocols to fit diverse industrial environments. Its value lies in its ability to deliver high dynamic performance—including rapid acceleration and deceleration—while maintaining the stability required for precision tasks.

DKC01.3-040-7-FW

DKC01.3-040-7-FW

Main features and advantages:

The Rexroth DKC01.3-040-7-FW stands out for its impressive power-to-size ratio, delivering 40A peak current to drive servo motors with up to 2.5kW output power, all within a housing that measures just 120mm in width. This makes it particularly valuable in multi-axis systems like robotic arms, where multiple drives must be mounted in close proximity. Its advanced control algorithms, including field-oriented control (FOC) and feedforward compensation, minimize position error even during rapid speed changes—critical for applications like laser cutting, where path accuracy directly affects cut quality. Unlike basic servo drives, the Rexroth DKC01.3-040-7-FW offers flexible connectivity options, including analog inputs, digital I/O, and a high-speed serial interface for communication with motion controllers, enabling seamless integration into both legacy and modern automation systems.
Durability is engineered into every component, with a rugged metal housing that provides effective heat dissipation, allowing reliable operation in temperatures up to 55°C without forced cooling. The drive’s circuit design includes comprehensive protection features—overcurrent, overvoltage, and short-circuit protection—that prevent damage to both the drive and connected motor during fault conditions. Engineers appreciate its low electromagnetic emissions, which minimize interference with nearby sensitive electronics, a key advantage in semiconductor and medical device manufacturing environments where EMI can disrupt delicate measurements.
DKC01.3-040-7-FW

DKC01.3-040-7-FW

 

Technical specifications:
Model DKC01.3-040-7-FW
Brand Rexroth
Type Compact Servo Drive
Power Supply 3-phase AC 230V ±10%
Continuous Output Current 12A
Peak Output Current 40A (10ms duration)
Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -25°C to 70°C (-13°F to 158°F)
Mounting DIN rail (35mm)
Dimensions 120mm x 180mm x 140mm (W x H x D)
Weight 1.8kg
Interfaces 1 x Serial (RS-485), 2 x analog inputs, 4 x digital inputs, 2 x digital outputs
Motor Compatibility Brushless servo motors (up to 2.5kW)
Certifications CE, UL, cUL, RoHS
Cooling Passive (heat sink)
Control Modes Position, velocity, torque

 

 

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DKC01.3-040-7-FW

DKC01.3-040-7-FW

Application areas:

In the precision-driven world of semiconductor wafer handling, where even a micron of misalignment can render a batch worthless, and in automated assembly lines for consumer electronics, where robotic arms must place components with absolute repeatability, the performance of motion control systems directly impacts production yields. This is where the Rexroth DKC01.3-040-7-FW proves essential. Used in industrial automation environments that demand high torque density in a compact form, this servo drive excels in scenarios where space is limited but performance cannot be compromised. Packaging machinery relies on it to synchronize conveyor belts and sealing mechanisms, ensuring consistent package quality at speeds exceeding 200 units per minute. In laboratory automation, the RexrothDKC01.3-040-7-FW powers precision positioning stages, enabling the delicate manipulation of samples in diagnostic equipment. Its ability to deliver smooth, precise motor control while operating in tight enclosures makes it a cornerstone of modern, space-efficient automation systems.

DKC01.3-040-7-FW

DKC01.3-040-7-FW

 

Related products:

Rexroth DKC01.3-020-7-FW – Lower current variant of the Rexroth DKC01.3-040-7-FW, ideal for 1.5kW and smaller motors.
Rexroth DKC02.3-040-7-FW – Higher-power model with extended thermal capacity, compatible with larger motors up to 4kW.
Rexroth MHD112B-061-PG0-AN – Servo motor perfectly matched to the Rexroth DKC01.3-040-7-FW for optimal dynamic performance.
Rexroth CSH01.3C-ET-ENS-NNN-CCD-NN-S-NN-FW – Motion controller that synchronizes multiple Rexroth DKC01.3-040-7-FW drives in multi-axis systems.
Rexroth R911306056 – Feedback cable set designed for secure signal transmission between encoders and the Rexroth DKC01.3-040-7-FW.
Rexroth DKC01.3-040-7-FW/BL – Variant of the Rexroth DKC01.3-040-7-FW with enhanced braking capabilities for high-inertia loads.
Rexroth PSB3AC/400-24 – Power supply unit optimized to deliver stable voltage to the Rexroth DKC01.3-040-7-FW in three-phase systems.
Installation and maintenance:
Before installing the Rexroth DKC01.3-040-7-FW, ensure the mounting surface (preferably a metal panel) provides adequate heat dissipation—avoid mounting near other high-heat components like power resistors. Verify that the DIN rail is rated to support the drive’s weight, using end stops to prevent shifting during transportation or vibration. For electrical installation, use shielded power cables with a minimum cross-section of 1.5mm² to handle peak current without voltage drop, and ensure proper grounding of both the drive and motor to minimize EMI. When configuring multiple Rexroth DKC01.3-040-7-FW units, maintain at least 30mm of clearance between drives to facilitate airflow and prevent heat buildup.
Maintenance for the Rexroth DKC01.3-040-7-FW focuses on preserving electrical connections and thermal performance. Every three months, inspect power terminals for signs of overheating (discoloration) which may indicate loose connections—retighten to the specified torque (2.5Nm) if necessary. The drive’s status LEDs provide real-time feedback on operation; familiarize operators with normal patterns to quickly identify faults like overcurrent or encoder errors. Firmware updates are released twice yearly and can be applied via Rexroth’s IndraWorks software using a dedicated programming cable—always back up current parameters before updating. Unlike mechanical components, the Rexroth DKC01.3-040-7-FW has no moving parts, but annual checks of cooling surfaces for dust accumulation are recommended to maintain thermal efficiency.

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