Servo Motion Control Solution — REXROTH DKC03.3-040-7-FW | ECODRIVE Series
The Rexroth DKC03.3-040-7-FW is a high-performance ECODRIVE servo drive controller engineered for precision motion control in demanding industrial environments. Rated at 40 A continuous output current and operating on a 3-phase 200–480 VAC supply, this unit delivers the dynamic response and positioning accuracy required by modern automated production systems. Whether you are maintaining an existing Rexroth ECODRIVE installation or sourcing a verified replacement, Konmask.com provides factory-equivalent units with full traceability.
Where This Product Is Used
The DKC03.3-040-7-FW is specified across a broad range of motion-intensive industrial applications:
- CNC Machining Centers — Axis feed drives for milling, turning, and grinding machines requiring sub-micron positioning repeatability.
- Injection Molding Machines — Clamp, injection, and ejector axis control where precise force and velocity profiles are critical.
- Packaging & Form-Fill-Seal Lines — High-cycle servo indexing, film feed, and sealing jaw positioning.
- Printing & Converting Machinery — Register control and web tension management on offset, flexo, and gravure presses.
- Robotic Welding & Assembly Cells — Multi-axis coordinated motion in Cartesian and articulated robot configurations.
- Semiconductor & Electronics Manufacturing — Pick-and-place, wafer handling, and precision dispensing stages.
- Textile & Winding Machines — Tension-controlled winding with torque-mode operation.
- Material Handling & Conveyor Systems — Synchronised multi-drive transport and sortation lines.
Technical Specifications
| Part Number | DKC03.3-040-7-FW |
| Brand / Series | Bosch Rexroth / ECODRIVE 03 |
| Drive Type | AC Servo Drive Controller |
| Continuous Output Current | 40 A |
| Supply Voltage | 3-phase 200–480 VAC, 50/60 Hz |
| DC Bus Voltage | 270–680 VDC |
| Firmware Variant | FW (standard firmware) |
| Communication Interface | SERCOS I/II, Analog ±10 V, Step/Direction |
| Feedback Support | Resolver, Incremental Encoder, Hiperface, EnDat |
| Operating Temperature | 0 °C to +45 °C (derating above 40 °C) |
| Protection Class | IP20 |
| Cooling | Forced air (internal fan) |
| Weight | 5.1 kg |
| Certifications | CE, UL, cUL |
Why Engineers Specify This Model
- Proven ECODRIVE 03 Platform — Decades of field deployment across global OEM machine builders; extensive spare-parts ecosystem.
- Flexible Firmware Architecture — FW variant supports multiple operating modes (velocity, torque, position) configurable via DriveTop / IndraWorks software without hardware changes.
- Wide Voltage Range — 200–480 VAC input accommodates both 200 V and 400 V plant supplies, simplifying global machine variants.
- SERCOS Fieldbus Integration — Deterministic real-time communication with Rexroth IndraMotion, Siemens SINUMERIK, and other SERCOS-capable CNCs.
- Regenerative Capability — Supports shared DC bus configurations with power regeneration modules, reducing energy consumption in multi-axis systems.
- Compact Panel Footprint — Slim bookshelf form factor enables high-density multi-axis cabinet layouts.
Complete System Bill of Materials
A fully functional ECODRIVE 03 servo axis typically comprises the following components. Konmask.com can source all items:
- Servo Drive Controller — DKC03.3-040-7-FW (this unit)
- Power Supply / Mains Filter — HNF01.1-M900-R0065-A-480-NNNN or equivalent HNF/HNS series
- Rexroth MHD / MKD / MKE Servo Motor — matched to torque and speed requirements
- Motor Power Cable — IKS series (shielded, motor-specific connector)
- Feedback Cable — IKS encoder/resolver cable (motor-specific)
- Control Cable — IKS SERCOS fiber-optic or analog signal cable
- Braking Resistor — HLR01.1 series (if not using shared DC bus regeneration)
- Control Panel / HMI — Rexroth VCP or third-party SERCOS master
Compliance & Industry Standards
- CE Marking — Compliant with EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU
- UL / cUL Listed — Recognized for use in North American industrial control panels
- EMC — EN 61800-3 Category C2 (with external mains filter)
- Safety — Supports Safe Torque Off (STO) via external safety relay when configured with appropriate firmware
- RoHS — Compliant with EU Directive 2011/65/EU
Quality Assurance & Sourcing
- Verified Inventory — Every unit is inspected for physical integrity, firmware version, and label authenticity before listing.
- Functional Test Available — Units can be bench-tested on request prior to shipment; test reports provided on request.
- Traceability — Serial number and production date recorded; documentation available for MRO and audit purposes.
- Packaging — Anti-static foam-lined export carton; shock indicators included for international freight.
- Warranty — 12-month warranty against manufacturing defects; DOA replacement within 7 business days.
- Global Shipping — DHL / FedEx Express worldwide; export documentation (commercial invoice, packing list, COO) included.
How to Source This Part
- Confirm your part number — Check the drive nameplate for the full model string (DKC03.3-040-7-FW) and firmware sticker.
- Request a quote — Email [email protected] or call +0086 19859288691 with your quantity and required delivery date.
- Receive proforma invoice — We confirm stock availability, unit condition, and lead time within 24 hours.
- Payment & dispatch — T/T, PayPal, or trade-term (EXW/FOB Xiamen) accepted; same-day dispatch for in-stock orders placed before 14:00 CST.
- Track & receive — AWB provided immediately after dispatch; typical transit 3–7 business days worldwide.
Application-Specific FAQ
Q: Can the DKC03.3-040-7-FW replace a DKC03.3-040-7-AP or -ET variant?
A: The hardware is identical; the suffix denotes the pre-loaded firmware application. The FW variant can be re-flashed to AP (positioning) or ET (electronic gearing) using Rexroth IndraWorks or DriveTop software, provided you have the appropriate license file.
Q: Is this drive compatible with third-party servo motors?
A: Yes, with limitations. The drive supports standard resolver and incremental encoder feedback. Third-party motors require manual motor data entry in the drive parameters. Rexroth MHD/MKD motors are plug-and-play via the motor database.
Q: What CNC controllers support SERCOS communication with this drive?
A: Siemens SINUMERIK 840D/840Di, Rexroth IndraMotion MTX, Bosch CC220/CC300, NUM Axium, and any SERCOS I/II master. Analog ±10 V mode is compatible with virtually all CNC and PLC motion controllers.
Q: Our machine uses a shared DC bus. Is this drive compatible?
A: Yes. The DKC03.3 series supports shared DC bus operation with Rexroth HNF/HNS power supply modules and HMV regenerative supply units. Ensure the total drive current does not exceed the supply module rating.
Q: What is the lead time for this part?
A: In-stock units ship same day (orders before 14:00 CST). If not in stock, typical sourcing lead time is 5–15 business days. Contact us for current availability.
Q: Do you provide a test report?
A: Yes. Functional test reports are available on request at no additional charge for orders of 2+ units. Single-unit test reports are available for a nominal fee.
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