Description
Product Introduction & Engineering Value
The Rexroth DKC01 belongs to the ECODRIVE DKC family of integrated servo drive controllers. The DKC01.1 can provide integrated position control, analog speed control with position feedback, stepper-interface operation, and electronic gearing, depending on the configured interface and firmware.
For maintenance teams, the critical point is the suffix. A DKC01.1-030-3-FW and a DKC01.1-040-7-FW are not electrically equivalent. The former uses a 230 V-class supply, while the latter is a 380–480 V-class drive with a nominal 700 V DC bus.
Technical Specifications
| Parameter | DKC01 Family / Verified Information |
|---|---|
| Manufacturer | Bosch Rexroth / Indramat |
| Product Family | ECODRIVE DKC |
| Series | DKC01 |
| Product Type | AC servo drive controller |
| Motor Compatibility | MKD AC servo motors |
| Position Control | Integrated on DKC01.1 |
| Serial Interfaces | RS-232 / RS-485 |
| Positioning Records | Up to 32 selectable via parallel inputs; up to 64 via serial interface |
| Switching Frequency | Selectable 4 or 8 kHz on documented DKC01.1 variants |
| DC24V Control Supply | 19.2–28.8 VDC |
| Protection | IP20 |
| Installation | Control cabinet |
| Cooling | Variant-dependent; natural-air or blower cooling |
| Operating Temperature | Typically 0 to +45°C for documented DKC01.1 variants, with derating to +55°C |
| Firmware | Ordered/configured separately according to drive function |
The DKC01.1 documentation identifies several operating modes, including integrated positioning, analog speed control, stepper-interface operation, and electronic gearing. Up to 32 positioning blocks can be selected through parallel inputs, while serial selection can provide up to 64 blocks.
Representative DKC01.1 Variants
| Variant | Supply Class | Rated Current | DC-Bus Class |
|---|---|---|---|
| DKC01.1-030-3-FW | 1 × 230 VAC or 3 × 230 VAC | 30 A class | 300 V class |
| DKC01.1-040-7-FW | 3 × 380–480 VAC | 40 A | 700 V class |
The published technical manual gives 30 A for the DKC01.1-030-3-FW and 40 A for the DKC01.1-040-7-FW. It also specifies a DC bus of approximately 500–800 VDC for the 700 V-class version, depending on supply conditions.
DKC01
DKC01
Field Application & the “Trench” Experience
A machine has one axis that suddenly refuses to reach its commanded position. The maintenance team finds a DKC01 controller with a fault condition and pulls the spare from inventory.
The spare is marked DKC01.1-040-7-FW. The failed unit, however, is DKC01.1-030-3-FW.
Both belong to the DKC01 family. Neither is an automatic substitute.
The engineer checks the cabinet’s incoming voltage, motor rating, DC-bus architecture, feedback cable, firmware, and parameter backup before approving the replacement. That prevents a very expensive mistake: treating the DKC family name as the complete part number.
Typical applications include:
- Machine-tool servo axes
- Packaging-machine positioning systems
- Material-handling servo axes
- Electronic gearing applications
- Multi-axis machinery using MKD servo motors
- Legacy CNC and production machinery
Transparency SOP: QA & Testing
For New Surplus or Refurbished DKC01 inventory, the test should follow the exact type code.
1. Identification
Record the complete DKC designation, firmware designation, serial number, and rating-plate information.
2. Physical inspection
Check power terminals, motor connectors, feedback connections, ventilation paths, mounting points, and DC-bus terminals.
3. Controlled power test
Apply the correct input voltage for the specific DKC variant. Never use a generic DKC01 test voltage.
4. Diagnostic verification
Check display/diagnostic behavior and controller initialization.
5. Motor test
Connect a compatible MKD motor and appropriate feedback hardware.
6. Functional test
Verify enable, velocity control, positioning, feedback, and fault handling according to the configured operating mode.
7. Parameter verification
Confirm that motor parameters and application-specific drive parameters can be loaded and retained.
8. Thermal/load test
Run the drive under a controlled representative load and monitor current, temperature, and fault behavior.
A supplier should distinguish between power-on tested, motor tested, and full-load functional tested. Those descriptions should never be treated as interchangeable.
The Veteran’s Tech Trap Guide
⚠️ Never order simply “DKC01.”
The complete type code is critical. The documented DKC01.1 family contains both 230 V-class and 380–480 V-class variants.
PRO TIP: Photograph the entire rating plate. The type code, serial number, firmware information, and change index can all matter when matching a legacy drive.
⚠️ Check the motor and feedback system.
The DKC is part of a servo system, not an isolated controller. Motor type, feedback, cables, and drive parameters must correspond to the application.
⚠️ Don’t ignore the DC bus.
The 700 V-class DKC variants can have a DC bus in the 500–800 V range. Treat the drive as high-voltage equipment and follow the applicable discharge and lockout procedures before service.
⚠️ Firmware is part of the application.
The technical documentation notes that firmware specifying the drive’s functions is ordered separately. A mechanically identical controller with different firmware may not provide the same operating mode.
Dynamic FAQ
Q1. What is the Rexroth DKC01?
The DKC01 is part of the Indramat/Bosch Rexroth ECODRIVE DKC servo-drive family. DKC01.1 controllers provide servo control functions for compatible AC motors, including MKD motors.
Q2. Is DKC01 a servo drive or PLC?
It is primarily a servo drive controller/amplifier, not a conventional PLC. Depending on the DKC01.1 configuration, it can perform integrated positioning and other motion-control functions.
Q3. What motors are compatible with DKC01?
The ECODRIVE documentation identifies MKD AC servo motors as a compatible motor family. The exact motor-drive combination must be selected according to rated current, feedback, voltage, and application data.
Q4. What does DKC01.1-040-7-FW mean?
This is a specific DKC01.1 configuration: 40 A class, 700 V DC-bus class, with FW indicating the firmware/configuration designation. A documented example operates from a 380–480 VAC three-phase supply.
Q5. Is DKC01 obsolete?
is a legacy Indramat/Bosch Rexroth ECODRIVE platform. Legacy DKC units remain available through industrial spare-parts and repair channels.
Q6. How should New Surplus DKC01 inventory be authenticated?
Request photographs of the actual drive’s rating plate, including the complete DKC type code, serial number, firmware designation, and change index. Confirm that the unit is unused original inventory rather than repaired or previously installed equipment.
Q7. What warranty should I request?
For refurbished DKC01 inventory, request a written warranty covering power-up, diagnostics, motor operation, feedback, and the functions actually tested. A power-on-only warranty is insufficient for a production-critical servo drive.
Q8. What information should I provide when requesting a replacement?
Provide the complete DKC01 type code, motor model, incoming supply voltage, feedback type, firmware designation, and a photograph of the existing drive’s rating plate. This is substantially safer than ordering by “DKC01” alone.
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