REXROTH DKC11.1-040-7-FW Digital AC Servo Drive for Synchronous Motors

  • Model:​ DKC11.1-040-7-FW
  • Rated Output Current:​ Approx. 40 A RMS (continuous), with higher peak current capability.
  • Supply Voltage:​ 3-phase, 400 – 480 V AC, 50/60 Hz.
  • Control Modes:​ Torque, speed, and positioning (depending on firmware and master controller).
  • Fieldbus Interface:​ Determined by the “F” option (e.g., PROFINET, EtherCAT).
  • Feedback Interfaces:​ EnDat, HIPERFACE, Resolver, SinCos (supports Rexroth and third-party motors).
  • Safety Function:​ Safe Torque Off (STO) according to SIL 2 / PL d.
  • Protection Class:​ IP20 for cabinet installation.
  • Cooling:​ Forced air cooling (built-in fan).
  • Programming/Configuration:​ Configured via Rexroth IndraWorks​ software suite.
Add to quote
Categories: ,

Description

Product Name:​ REXROTH DKC11.1-040-7-FW
Product Series:​ IndraDrive Cs / C Series (Servo Drive)
Product Type:​ Digital AC Servo Drive for Synchronous Motors
Manufacturer:​ Bosch Rexroth, Electric Drives and Controls

Overview

The REXROTH DKC11.1-040-7-FW is a compact, high-performance, single-axis digital servo drive​ designed as part of the IndraDrive C​ or IndraDrive Cs​ family. It is engineered to control permanent magnet synchronous servo motors (typically Rexroth MKD, MSK, or MCS series) with high dynamic response and precision. This model is commonly integrated into modular automation systems using various fieldbus interfaces, making it a core component for applications requiring precise motion control in packaging, printing, robotics, and machine tool axes.

Key Features & Capabilities

  1. Advanced Servo Performance:​
    • High dynamic response with high switching frequency for precise current/torque control.
    • Supports advanced control modes:
      • Torque Control​
      • Velocity Control​
      • Position Control​ (when used with an external motion controller or via internal setpoint generation)
    • Features automatic servo tuning and adaptive load inertia compensation for optimal performance.
  2. Safety Integrated (STO):​
    • Includes integrated Safe Torque Off (STO)​ functionality as per IEC 61800-5-2, allowing safe disconnection of motor torque without additional external safety relays for certain safety categories.
  3. Digital I/O & Feedback Interfaces:​
    • Equipped with digital inputs/outputs for control commands (enable, reset, acknowledge) and status signals (ready, warning, fault).
    • Supports high-resolution feedback systems:
      • EnDat 2.1/2.2​ (Heidenhain)
      • HIPERFACE®​ (Stegmann)
      • Resolver​ and SinCos 1 Vpp​
    • Can operate with single or multi-turn absolute encoders.

      DKC11.1-040-7-FW

Technical Specifications (Typical for DKC11.1-040-7-FW)

  • Model:​ DKC11.1-040-7-FW
  • Rated Output Current:​ Approx. 40 A RMS (continuous), with higher peak current capability.
  • Supply Voltage:​ 3-phase, 400 – 480 V AC, 50/60 Hz.
  • Control Modes:​ Torque, speed, and positioning (depending on firmware and master controller).
  • Fieldbus Interface:​ Determined by the “F” option (e.g., PROFINET, EtherCAT).
  • Feedback Interfaces:​ EnDat, HIPERFACE, Resolver, SinCos (supports Rexroth and third-party motors).
  • Safety Function:​ Safe Torque Off (STO) according to SIL 2 / PL d.
  • Protection Class:​ IP20 for cabinet installation.
  • Cooling:​ Forced air cooling (built-in fan).
  • Programming/Configuration:​ Configured via Rexroth IndraWorks​ software suite.

System Integration & Communication

  1. Fieldbus Communication:​
    • Connects via the integrated fieldbus (e.g., PROFINET) to a central controller (PLC/CNC). The controller sends setpoints (torque, speed, position) and receives actual values and status.
  2. Motor & Feedback Connection:​
    • Connects to a compatible Rexroth synchronous servo motor via motor power and feedback cables.
  3. Power Connection:​
    • Connected to a 3-phase AC line supply via a line filter and main contactor. Often used with a shared DC bus in multi-axis systems.
  4. Control Integration:​
    • The drive can be fully parametrized and commissioned using Rexroth IndraWorks. Motion programs can be executed either from the central controller (centralized motion control) or, in some architectures, from the drive itself using internal sequences (distributed motion control).

Typical Applications

  • Packaging Machinery:​ High-speed pick-and-place, filling, and sealing operations.
  • Printing & Paper Converting:​ Accurate web tension control and registration.
  • Machine Tools:​ Feed axes, spindles, and auxiliary axes requiring high precision.
  • Robotics:​ Joint drives for articulated robots.
  • Material Handling:​ Conveyors, sorting systems, and automated storage/retrieval systems.

Configuration & Commissioning

  • Software:​ Rexroth IndraWorks​ is used to configure all drive parameters, set up the fieldbus communication, commission the motor (automatic motor identification), tune the control loops, and diagnose faults.
  • Motor Compatibility:​ Must be paired with a compatible servo motor; the drive automatically identifies motor parameters if using a Rexroth motor with a digital feedback system.
  • Safety Configuration:​ STO function must be properly configured and validated according to machine safety standards.

Related products