Bosch Rexroth DKC11.3-100-7-FW Servo Drive Controller | DKCXX.3-100-7 Series
Engineering Background
The DKC11.3-100-7-FW is part of Bosch Rexroth’s DKCXX.3 family — a generation of compact, high-performance servo drive controllers engineered for precision motion control in demanding industrial automation environments. Built on Rexroth’s proven IndraDrive architecture, this unit delivers deterministic torque, velocity, and position control across a wide range of servo motor configurations.
Product Positioning
Designed for OEM machine builders and system integrators who require a reliable, field-proven drive solution with SERCOS and analog interface flexibility. The DKC11.3-100-7-FW is a direct-fit replacement for aging DKCXX.3-series installations and a primary specification choice for new IndraDrive-compatible motion axes.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Bosch Rexroth |
| Part Number | DKC11.3-100-7-FW |
| Series | DKCXX.3 (IndraDrive C) |
| Continuous Output Current | 100 A |
| Supply Voltage | 3 × AC 200–480 V, 50/60 Hz |
| DC Bus Voltage | 270–750 V DC |
| Interface | SERCOS I/II + Analog |
| Firmware Designation | FW (standard firmware) |
| Control Modes | Position, Velocity, Torque |
| Feedback Support | Resolver, EnDat, Hiperface, SSI |
| Communication | SERCOS fiber optic ring |
| Protection Class | IP20 |
| Cooling | Forced air (internal fan) |
| Operating Temperature | 0 °C to +45 °C |
| Storage Temperature | −25 °C to +70 °C |
| Humidity | 5–95 % RH, non-condensing |
| Mounting | DIN rail / panel mount |
| Certifications | CE, UL |
| Weight | Approx. 4.5 kg |
Proven Application Environments
- CNC Machining Centers — High-dynamic axis control for milling, turning, and grinding spindles requiring sub-micron positioning accuracy.
- Injection Molding Machines — Precise clamp force and injection velocity control with fast torque response.
- Printing & Packaging Lines — Synchronized multi-axis register control via SERCOS ring topology.
- Robotics & Handling Systems — Coordinated motion for SCARA, gantry, and articulated arm configurations.
- Semiconductor & Electronics Assembly — Ultra-smooth velocity profiles for pick-and-place and wafer handling.
- Textile Machinery — Tension control and winding applications with real-time torque regulation.
Engineering Advantages
- SERCOS Determinism — Fiber-optic SERCOS I/II ring provides jitter-free, synchronized communication across all axes at cycle times down to 250 µs.
- Universal Feedback Compatibility — Supports resolver, EnDat 2.1/2.2, Hiperface, and SSI encoders without additional interface modules.
- Integrated Safety — Safe Torque Off (STO) function meets SIL 2 / PLd requirements for machine safety compliance.
- Compact Power Density — 100 A continuous rating in a space-optimized housing reduces cabinet footprint versus legacy drive generations.
- Rexroth IndraWorks Compatibility — Full parameter management, diagnostics, and commissioning via IndraWorks DS engineering software.
- Hot-Plug Firmware — FW designation enables field firmware updates without full system shutdown.
System Architecture & Signal Flow
The DKC11.3-100-7-FW operates within a Rexroth IndraDrive C architecture:
- Power Section: Mains supply → HMV/HCS supply unit → DC bus → DKC drive module
- Control Section: CNC/PLC → SERCOS fiber ring → DKC11.3 control board → PWM inverter stage → motor
- Feedback Loop: Motor encoder → DKC feedback interface → position/velocity/torque controller → closed-loop correction
- Safety Channel: Safety PLC → STO input → drive enable circuit (hardware-level, independent of firmware)
The drive supports both single-axis standalone operation and multi-axis synchronized configurations via SERCOS master (e.g., Rexroth IndraMotion MTX, Siemens SINUMERIK, or third-party SERCOS masters).
Sourcing & Quality Verification
- Source Traceability: All units sourced from authorized distributors, OEM decommissions, or certified refurbishers with documented chain of custody.
- Incoming Inspection: Visual inspection, firmware version verification, and functional power-on test performed before dispatch.
- Warranty: 12-month warranty against manufacturing defects and functional failure under normal operating conditions.
- Counterfeit Prevention: Serial number and date code verified against Rexroth production records where applicable.
- Packaging: Anti-static ESD packaging with shock-absorbing foam insert for safe international transit.
Procurement Process
- Inquiry — Submit your part number, required quantity, and delivery timeline via the contact form or email below.
- Quotation — Receive a detailed quote including unit price, lead time, and shipping options within 24 business hours.
- Order Confirmation — Confirm purchase order; payment via T/T, PayPal, or trade terms for qualified accounts.
- Quality Check & Dispatch — Unit undergoes final inspection, is packed to IEC 60068 transit standards, and shipped with full documentation.
- After-Sales Support — Technical support available for commissioning, parameter backup, and fault diagnosis post-delivery.
Technical FAQ
Q: Is the DKC11.3-100-7-FW compatible with Rexroth MKD and MHD servo motors?
A: Yes. The DKCXX.3 series is designed to operate with Rexroth MKD, MHD, and MSK motor families. Verify motor feedback type (resolver vs. EnDat) matches the drive’s configured feedback channel.
Q: Can this drive replace a DKC21.3-100-7-FW or DKC01.3-100-7-FW?
A: The DKC11.3, DKC21.3, and DKC01.3 share the same DKCXX.3 power hardware platform. Interface and firmware differences apply — consult the Rexroth DOK-INDRV*-FU*3-ANW**-EN-P application manual before substitution.
Q: What SERCOS cycle time does this drive support?
A: The DKC11.3-100-7-FW supports SERCOS cycle times of 250 µs, 500 µs, 1 ms, 2 ms, and 4 ms depending on master controller configuration.
Q: How do I back up drive parameters before replacement?
A: Use Rexroth IndraWorks DS software to export the parameter set (.par file) via the SERCOS or RS232 service interface. This file can be loaded directly into the replacement unit.
Q: Is a new firmware version available for this hardware?
A: Firmware updates for DKCXX.3 hardware are available from Bosch Rexroth’s service portal. Konmask can supply units pre-loaded with a specified firmware version upon request.
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