Rexroth S31043-K1166-X Servo Drive

Product Details

S31043-K1166-X Product Description

The Rexroth DKC02.3-040-7-FW is a high-performance digital AC servo drive engineered for seamless integration within Bosch Rexroth IndraDrive control architectures. Rated at 40 A continuous output current and designed for 7th-generation firmware compatibility, this drive delivers deterministic motion control across multi-axis machine platforms. Its system-matched design ensures direct compatibility with Rexroth IndraDrive C and IndraDrive M series infrastructure, enabling engineers to deploy coordinated motion sequences without additional interface hardware or signal conditioning layers. The DKC02.3-040-7-FW supports SERCOS II and PROFIBUS-DP fieldbus protocols, providing real-time cyclic communication with the control layer and enabling tight synchronization across distributed drive nodes. This makes it a foundational component in applications where axis coordination, velocity profiling, and torque regulation must be maintained under dynamic load conditions.

From a system architecture perspective, the DKC02.3-040-7-FW occupies the drive layer between the motion controller and the servo motor, translating high-level motion commands into precise current and voltage outputs. Its integrated diagnostic interface supports parameter readback, fault logging, and drive state monitoring via the IndraDrive engineering tool IndraWorks, reducing commissioning time and enabling predictive maintenance workflows. The drive's modular firmware structure allows function packages to be loaded selectively, supporting applications ranging from single-axis positioning to multi-axis electronic gearing and cam profiling.

The DKC02.3-040-7-FW achieves its full performance potential when deployed as part of a coordinated IndraDrive automation platform. At the control layer, a Rexroth IndraMotion MLC or IndraMotion MTX motion logic controller issues real-time motion commands over the SERCOS II fiber-optic ring, with cycle times as low as 250 µs ensuring deterministic axis synchronization. The drive communicates upstream with the controller and downstream with Rexroth IndraDyn S (MSK series) or IndraDyn T (MKD series) servo motors, forming a closed-loop motion chain with full encoder feedback.

Power supply integrity is maintained by the Rexroth HMV01 or HMV02 supply unit, which provides regulated DC bus voltage to the DKC02.3-040-7-FW and adjacent drive nodes within the same cabinet section. For multi-axis installations, the HMV supply unit feeds a shared DC bus rail, allowing regenerative energy from decelerating axes to be redistributed to accelerating axes, improving overall energy efficiency. The Rexroth HLC01 line filter and Rexroth HNF01 mains filter are typically installed upstream to suppress conducted EMI and protect the drive from line transients.

At the I/O layer, Rexroth Inline I/O modules or third-party PROFIBUS-DP I/O stations interface with the drive's fieldbus segment, enabling digital and analog signal exchange with sensors, limit switches, and safety relays. For safety-critical applications, the DKC02.3-040-7-FW can be paired with a Rexroth SafeMotion module or an external safety relay such as the Pilz PNOZ series, implementing STO (Safe Torque Off) and SS1 (Safe Stop 1) functions in compliance with IEC 62061 and ISO 13849.

HMI integration is achieved through Rexroth IndraControl VCP or VEP operator panels connected via Ethernet or PROFIBUS, providing operators with real-time drive status, axis position feedback, and alarm visualization. For distributed architectures, a Rexroth communication gateway such as the CML65 or a third-party PROFIBUS-to-EtherNet/IP gateway bridges the drive segment to plant-level SCADA or MES systems, enabling production data collection and remote diagnostics. Terminal modules and shield connection clamps from the Rexroth IndraDrive accessory range complete the cabinet wiring, ensuring signal integrity and EMC compliance across the full installation.

The DKC02.3-040-7-FW is deployed across a broad range of industrial sectors where precision motion control and system reliability are non-negotiable. In manufacturing and machine tool environments, the drive controls feed axes and spindle drives on CNC machining centers, coordinating with the IndraMotion MTX CNC kernel to execute complex contouring paths with sub-micron repeatability. In packaging and converting lines, the drive manages registration control, web tension, and cut-to-length sequences, synchronizing multiple axes via electronic gearing over the SERCOS II ring.

In power generation and energy facilities, the DKC02.3-040-7-FW drives valve actuators and positioning systems in turbine control panels, where deterministic response and fault-safe behavior are critical. In petrochemical and process industries, the drive operates pump and compressor positioning systems within hazardous-area control cabinets, with the IP20 enclosure rating suited for installation in purged and pressurized enclosures. Water treatment plants utilize the drive for dosing pump control and filter press positioning, leveraging PROFIBUS-DP integration with existing plant DCS infrastructure.

In mining and metallurgy, the drive's robust DC bus design and wide supply voltage tolerance (200–480 V AC) accommodate the variable power quality conditions common in heavy industrial environments. Shipbuilding and marine applications deploy the DKC02.3-040-7-FW in deck machinery and hatch cover positioning systems, where the drive's diagnostic capability supports planned maintenance intervals aligned with vessel dry-dock schedules. Across all sectors, the drive's modular firmware and standardized IndraDrive platform reduce spare parts inventory complexity and support long-term availability planning.

Q1: Is the DKC02.3-040-7-FW compatible with both SERCOS II and PROFIBUS-DP in the same installation? Yes. The DKC02.3-040-7-FW supports SERCOS II as the primary real-time motion bus and PROFIBUS-DP as a secondary fieldbus interface. In a typical architecture, SERCOS II handles cyclic motion commands from the IndraMotion controller, while PROFIBUS-DP connects the drive to plant-level I/O or SCADA systems. Both interfaces can be active simultaneously, provided the PROFIBUS-DP address and baud rate are configured correctly in IndraWorks. This dual-bus capability simplifies integration into existing PROFIBUS plant networks without requiring a separate gateway device.

Q2: What commissioning tools and firmware versions are required for the DKC02.3-040-7-FW? Commissioning is performed using Bosch Rexroth IndraWorks DS or IndraWorks Engineering software, connected to the drive via the RS232 diagnostic interface or the SERCOS II ring. The drive ships with 7th-generation firmware (FW suffix), which is compatible with IndraWorks versions 10.x and later. Before commissioning, engineers should verify that the motor data file (MDF) for the connected IndraDyn motor is loaded into the drive, and that the SERCOS II ring topology is correctly configured in the controller project. NANKMOS provides pre-shipment functional testing and parameter backup files upon request, reducing on-site commissioning time.

Q3: What does the 12-Month Warranty cover, and how does NANKMOS support long-term inventory availability? All DKC02.3-040-7-FW units supplied by NANKMOS are covered by a 12-Month Warranty against manufacturing defects and functional failures under normal operating conditions. The warranty covers drive electronics, firmware integrity, and connector interfaces. NANKMOS maintains dedicated stock of IndraDrive DKC series drives to support both immediate replacement needs and planned maintenance programs. For customers managing multi-year maintenance contracts, NANKMOS offers reserved inventory arrangements and advance exchange programs to minimize production downtime. Contact [email protected] or +86 18359268345 for warranty claims, spare parts planning, and technical support.