Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | DKCXX.3-040-7 |
| Manufacturer | Bosch Rexroth / Indramat |
| Product Family | ECODRIVE 03 |
| Product Type | Digital AC servo drive controller |
| Hardware Version | 3 |
| Current Class | 40 A |
| Voltage Category | 7 |
| DC Bus Nominal Voltage | 700 VDC |
| Mains Supply | Three-phase AC; exact permitted range must be checked against the complete unit rating plate |
| Communication Interface | Depends on the actual DKC interface variant |
| Motor Feedback | Compatible encoder and resolver systems, depending on configuration |
| Cooling | Internal blower on documented configurations |
| Firmware | Separate firmware module required |
| Control Functions | Servo speed, torque, and position control, depending on installed firmware |
| Protection Rating | IP20 reported for documented configurations; verify exact variant |
| Dimensions | Variant-dependent; approximately 360 × 65 × 261 mm reported for a 40 A configuration |
| Operating Temperature | Verify against the exact unit and installation conditions |
The 040 code indicates the 40 A current class, while 7 identifies the voltage category. The manufacturer’s type-code documentation also makes clear that the firmware defining drive functions is ordered separately.
Important distinction: The XX portion does not identify a specific communication interface. A complete model such as DKC03.3-040-7-FW contains more information than the generalized DKCXX.3-040-7 designation.
Product Introduction
The Bosch Rexroth Indramat DKCXX.3-040-7 belongs to the ECODRIVE 03 digital servo drive family. It is designed for single- and multi-axis motion-control applications, including machine tools, packaging equipment, material handling, and automated assembly systems. The controller regulates the connected AC motor using feedback from supported measuring systems and the control functions provided by its installed firmware.
The DKC interface designation determines how the drive exchanges commands and status information with the machine controller. Available ECODRIVE 03 interface families include SERCOS, PROFIBUS-DP, CANopen, analog, parallel, and other configurations. The exact interface cannot be established from DKCXX alone.
DKCXX.3-040-7
Application Scenarios & Field Pitfalls
Typical applications
- CNC machine tools: Servo control for feed axes and other precision motion functions.
- Packaging machinery: Coordinated motor control for feeding, indexing, and positioning.
- Automated assembly equipment: Closed-loop motion control for synchronized machine axes.
- Material handling systems: Servo positioning in transfer, handling, and automated production equipment.
- Printing and converting machinery: Motion coordination across multiple servo axes.
Field checks before replacement
- Identify the complete interface variant. Confirm whether the original unit is DKC01.3, DKC03.3, DKC11.3, or another version. The
XXdesignation is insufficient for an exact replacement. - Verify the firmware module. The firmware determines the drive’s functional capabilities. Confirm its type and version, along with the original parameter set.
- Check motor compatibility. Match motor rated current, voltage, feedback device, encoder connection, and holding-brake requirements.
- Verify the mains and DC bus arrangement. Confirm the supply configuration, grounding, protective devices, and shared DC bus wiring.
- Inspect the cooling system. Check the internal blower, air passages, cabinet ventilation, and temperature conditions.
- Preserve machine parameters. Back up motor data, control-loop settings, encoder configuration, communication parameters, and axis references before replacement.
- Test motion under controlled conditions. Verify feedback direction, motor rotation, drive enable, limit inputs, and emergency-stop behavior before restoring automatic operation.
Safety warning: The DC bus can retain hazardous voltage after the mains supply is disconnected. Follow the manufacturer’s discharge procedure and verify the DC bus voltage before touching power connections.
Related Products
- DKC03.3-040-7-FW – Specific ECODRIVE 03 interface configuration; confirm the PROFIBUS-DP interface and firmware requirements before considering it.
- DKC01.3-040-7-FW – Another 40 A ECODRIVE 03 configuration with a different interface designation.
- DKC02.3-040-7-FW – Related 40 A drive-controller variant; verify interface and firmware compatibility.
- DKC11.3-040-7-FW – ECODRIVE 03 family variant with a different interface configuration.
- DKCXX.3-100-7-FW – 100 A current-class family configuration; not a direct 40 A replacement.
- DKCXX.3-200-7-FW – 200 A current-class family configuration.
- BZM01.3-01-07 – Auxiliary braking resistor module for compatible ECODRIVE 03 systems.
- CZM01.3-02-07 – Auxiliary capacitance module for compatible DC bus configurations.
These products belong to the broader ECODRIVE 03 system family. Their shared platform does not establish electrical or functional interchangeability.
Procurement and Replacement Notes
For procurement, do not specify only DKCXX.3-040-7 if the original drive is available for inspection. Obtain the complete type designation and photographs of:
- The drive nameplate and material number.
- The interface and firmware modules.
- Power and motor terminals.
- Encoder and feedback connectors.
- Hardware revision and serial number.
The most important replacement criteria are the 40 A current class, voltage category, communication interface, firmware version, motor feedback configuration, and DC bus architecture. A replacement with the correct current rating can still be unsuitable if its interface or firmware differs.
