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Product Overview
The REXROTH DKC02.3-100-7-FW is a Bosch Rexroth Indramat ECODRIVE03 DKC drive controller designed for high-performance servo and motion-control systems. It accepts single-phase or three-phase AC input within the 200–480 V range and uses a nominal 700 V DC bus. The controller is rated for up to 100 A peak current and provides three-phase motor output, making it suitable for demanding machine-tool, transfer-system, robotics, and multi-axis automation applications. The unit is part of the DKC02.3 series and is intended for SERCOS-based motion-control architectures.
Technical Specifications — DKC02.3-100-7-FW
| Parameter | Value |
|---|---|
| Product Model | DKC02.3-100-7-FW |
| Manufacturer | Bosch Rexroth Indramat |
| Product Type | Servo Drive Controller |
| Product Family | ECODRIVE03 / DKC02.3 |
| Input Voltage | 1/3 × AC 200–480 V ±10% |
| Rated / Peak Current | 100 A |
| DC-Bus Voltage | 700 V nominal |
| Maximum Output Voltage | 800 V |
| Output Phases | 3-phase |
| Mains Frequency | 50–60 Hz ±2 Hz |
| Control Voltage | 24 V |
| Communication / Protocol | SERCOS |
| Maximum Output Frequency | Up to 1000 Hz |
| Ambient Temperature | 0 to +45 °C nominal; reduced rating up to +55 °C |
| Mounting | Industrial control cabinet |
| Dimensions (H×W×D) | Approx. 360 × 105 × 261 mm |
| Weight | Approx. 9.7 kg |
| Typical Interfaces | AC input, DC bus, 3-phase motor output, control and SERCOS interfaces |
| Protection | IP20 |
The input, current, DC-bus, environmental, and mechanical specifications are supported by Rexroth documentation and established drive references.
REXROTH DKC02.3-100-7-FW
Key Features and Benefits — DKC02.3-100-7-FW
- 100 A peak-current capability for demanding servo applications.
- 700 V DC-bus architecture supports high dynamic motor operation.
- Three-phase motor output for industrial servo systems.
- SERCOS compatibility for coordinated multi-axis motion control.
- Integrated braking functions and substantial DC-bus energy handling capability.
- Designed for compact cabinet installation despite its high-current rating.
Personally, I would verify the complete drive configuration before replacement. The 100 A rating alone is not enough; motor compatibility, SERCOS configuration, firmware, braking arrangement, and the connected control architecture all need to match.
Related Models
DKC02.3-040-7-FW — A lower-current ECODRIVE03 DKC controller from the same product family, intended for applications with lower servo current demand.
DKC03.1 Series — A related ECODRIVE DKC controller generation used in earlier and later Rexroth motion-control installations.
FWA-ECODR3-SMT-01VRS-MS — Rexroth ECODRIVE03 firmware reference associated with DKC controller systems.
R911279430 — Bosch Rexroth order number associated with the DKC02.3-100-7-FW configuration.
Installation and Maintenance — DKC02.3-100-7-FW
Before installation, verify incoming voltage, motor rating, SERCOS configuration, braking circuit, control voltage, firmware, and cabinet clearance. The controller is a high-energy device; DC-bus discharge and electrical isolation procedures must be completed before service work.
Maintain the specified ventilation clearance, particularly the documented top and bottom spacing requirements. Inspect power terminals, motor connections, DC-bus components, cooling paths, and communication interfaces for heat damage or contamination. After replacement, restore the verified parameter set and perform axis enable, feedback, homing, and motion tests under the approved commissioning procedure.
Product Warranty — DKC02.3-100-7-FW
Warranty coverage depends on supplier condition and sales terms. Confirm whether the unit is new, refurbished, repaired, or surplus, and request serial-number traceability, functional-test documentation, firmware information, and the applicable warranty period.
The REXROTH DKC02.3-100-7-FW is a high-current legacy ECODRIVE03 controller, so exact hardware and application compatibility should be verified before procurement rather than relying only on the nominal 100 A specification.
