Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | DKC01.3-040-7-FW |
| Material Number | R911279426 |
| Manufacturer | Bosch Rexroth Indramat |
| Product Type | Digital AC servo drive controller |
| Product Family | EcoDrive 03 |
| Series / Version | 01 / Version 3 |
| Rated-Current Designation | 40 A |
| DC Bus Voltage Class | 700 V nominal |
| Main Power Input | AC, 200–480 V class; verify supply limits against the drive documentation |
| Control Voltage | 24 VDC |
| Control Voltage Range | 19.2–28.8 VDC |
| Command Interface | Analog / parallel |
| Feedback | Motor encoder or resolver, depending on motor configuration |
| Firmware | Required; application-specific release |
| Protection Rating | IP20 reported |
| Dimensions | Verify from hardware revision drawing |
| Installation | Industrial control cabinet |
The 40 A designation is the drive’s type-current class, not a guarantee of 40 A continuous motor current under every operating condition. Available continuous and peak current depend on switching frequency, thermal conditions, and the configured motor.
Product Introduction
The Bosch Rexroth Indramat DKC01.3-040-7-FW is an EcoDrive 03 digital servo drive controller designed for closed-loop motion control. It regulates motor current and coordinates position, speed, and torque functions in machinery using compatible Rexroth servo motors. Its analog/parallel interface makes it relevant to established machine architectures where motion commands and status signals are exchanged through hardwired control connections.
DKC01.3-040-7-FW
The DKC01.3 hardware version is important when sourcing a replacement. A similar DKC controller may share the same current class while having a different interface, firmware configuration, or power-stage arrangement. The FW designation also requires attention: the firmware release and parameter set must be identified separately. The manufacturer’s firmware documentation specifically lists DKC01.3-040-7-FW as a supported controller and describes firmware replacement procedures.
Major Features and Advantages
Closed-loop servo regulation
The controller supports coordinated motor control using feedback from the motor’s measuring system. Depending on the installed firmware and configuration, operating modes include velocity control, torque control, position control, internal interpolation, jogging, and positioning block operation.
Analog and parallel command interface
The interface supports integration with compatible machine controllers using hardwired command and status signals. Confirm the terminal assignment and machine-side wiring before replacing an existing drive.
Configurable motor feedback
The EcoDrive 03 platform supports different measuring systems, including digital servo feedback, resolver feedback, and specified incremental or absolute encoder arrangements. The actual supported combination depends on the motor and firmware configuration.
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Firmware-dependent functionality
The firmware determines available operating modes, parameter behavior, motor configuration, and diagnostic functions. A replacement drive with the wrong firmware release may power up but fail to operate the machine correctly.
Drive diagnostics
The controller provides diagnostic messages and operating-state information through its display and parameter interface. These functions assist troubleshooting of drive, motor, and communication faults.
Application Scenarios and Field Pitfalls
Typical applications include:
- Packaging and material-handling machinery.
- Machine tools and automated production equipment.
- Printing and converting machinery.
- Multi-axis servo positioning systems.
- Industrial machinery using Rexroth MKD or other supported motor families.
Critical replacement checks:
- Match the complete
DKC01.3-040-7-FWdesignation, not just the 040 current class. - Confirm the motor model, encoder type, and feedback wiring.
- Identify the firmware release and programming-module configuration.
- Back up the original drive parameters before removing the existing controller.
- Verify the DC bus, supply arrangement, braking circuit, and grounding.
- Check the parallel-interface wiring and machine-controller signals.
- Confirm the motor brake configuration and control sequence.
Do not assume a DKC02.3 or DKC11.3 model is a direct replacement. Similar hardware ratings do not establish interface or firmware compatibility.
Related Products and Variants
| Model | Difference |
|---|---|
| DKC01.3-100-7-FW | Same basic series and interface family, different current class |
| .3-016-7-FW | Lower current-class configuration |
| DKC02.3-040-7-FW | Different controller series designation |
| DKC11.3-040-7-FW | Different controller series designation |
| .3-040-7 | Related designation; complete firmware configuration must be checked |
These are related EcoDrive 03 models, not confirmed drop-in replacements.
Procurement and Quality Control
Before ordering a .3-040-7-FW, request:
- Complete type-plate and material-number photographs.
- Firmware or programming-module identification.
- Drive diagnostic history and fault codes.
- Power-stage and control-voltage test results.
- Analog/parallel interface inspection.
- Cooling fan and internal contamination inspection.
- Parameter backup or confirmation that the original machine parameters are available.
- Clear declaration of whether the unit is new, used, repaired, or refurbished.
Engineering recommendation: Treat firmware and parameter compatibility as part of the replacement specification. For this legacy EcoDrive 03 controller, matching the hardware number alone is not enough to ensure a successful restart.
