Getting to Know Your Indramat Ecodrive

May 08, 2025

The Indramat Ecodrive series—most notably the DKC Drive Controller—is a foundational component in many industrial automation systems. Manufactured by Bosch Rexroth, the Ecodrive line offers a cost-effective, highly reliable servo drive platform for controlling motion in automated machinery. Its compact design and intelligent features make it suitable for a variety of applications in sectors such as:

Material handling
Packaging machinery
Printing and converting
Textile manufacturing
Machine tools
Robotics and assembly systems

The Ecodrive is not simply a motor controller—it’s an essential building block for delivering high-speed, high-precision motion control.

What Is the Ecodrive (DKC) System?

The DKC series Ecodrive is a digital servo drive designed to operate AC servo motors, particularly Rexroth’s own MKD, MHD, and MKE motor series. These drives form part of a closed-loop motion control system, constantly adjusting motor output based on encoder feedback to ensure exact positioning, speed, and torque.

Key features include:

Closed-loop control for dynamic and accurate motion
Integrated diagnostics and parameter monitoring
Flexible configuration for various load types
Position, velocity, and torque control modes
Communication compatibility (e.g., analog, SERCOS, CANopen, Profibus on select models)
Modular plug-in design for easy mounting and service

DKC Ecodrive Models

The Ecodrive system is available in a variety of models with different power ratings, communication interfaces, and control functionality. The model number format typically follows the pattern:

DKCXX.3-XXXX-XXXX-AXX

The "XX.3" indicates a third-generation digital drive
Variants include DKC01.3 (analog interface) and DKC02.3 (SERCOS interface)

Example models include:

Model	Description
DKC01.3-040-7-FW	Analog interface, 4 kW power rating
DKC02.3-100-7-FW	SERCOS digital interface, 10 kW rating
DKC03.3-040-7-FW	CANopen bus communication

These variations allow the Ecodrive to be tailored to both legacy and modern PLC environments.

Core Operating Modes

Ecodrive systems support several control modes to match different types of automation processes:

Torque Control Mode: Regulates motor torque output precisely, useful for tension applications or compliant motion.
Velocity Control Mode: Keeps constant motor speed, ideal for conveyors or rotary tools.
Position Control Mode: Accurate positioning based on encoder feedback—ideal for pick-and-place, CNC, or packaging.

Each mode is selectable via drive parameters and external signal inputs.

Typical System Setup

An Indramat Ecodrive-based motion control system includes the following components:

DKC Drive (Ecodrive) – Mounted in the control cabinet
MKD/MHD Servo Motor – Connected via shielded power and feedback cables
Encoder – Provides closed-loop feedback to the DKC for motion correction
PLC or Motion Controller – Sends setpoints and control signals to the drive
HMI (optional) – Interface for operators to view status or modify parameters

Programming and Configuration

DKC Ecodrive drives are typically configured using Drivetop software or via direct parameterization through SERCOS or analog inputs. The setup includes:

Defining motor type and encoder feedback
Selecting operating mode (torque/velocity/position)
Tuning PID control loops for optimal performance
Setting acceleration/deceleration ramps
Configuring safety limits (current, voltage, position)

Parameter files (firmware specific) must match the drive model, and a firmware card (AXX) is usually included with each unit.

Benefits of Using Indramat Ecodrive

. Proven Reliability – Field-tested across industries for decades
. Flexible Integration – Works with a variety of control systems and fieldbus protocols
. Space Efficient – Compact form factor, DIN rail mountable
. Expandable – Multiple DKC drives can be networked via SERCOS
. Upgradeable – Retrofit options exist to update systems to more modern Bosch Rexroth platforms

Maintenance and Troubleshooting Tips

While DKC Ecodrives are designed for longevity, common maintenance actions include:

Keep cabinet well-ventilated – Prevent overheating
Monitor encoder and cable wear – Avoid signal faults
Check for fault codes on the display – Use diagnostic table for reference
Verify grounding and shielding – Prevent EMI interference

Wake Industrial can assist with replacement, refurbishment, or sourcing discontinued DKC modules.

Planning for the Future: Retrofit Considerations

While the Ecodrive DKC series remains a solid performer, many models are now designated as Active Mature or discontinued by Bosch Rexroth. For long-term planning, consider: