Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Product Introduction
High-current servo applications require more than a basic motor amplifier. The drive must coordinate motor feedback, communication timing, and current delivery while maintaining stable operation under changing mechanical loads.
The Bosch Rexroth Indramat DKC02.3-100-7-FW belongs to the ECODRIVE03 digital drive family. With a 100 A current rating and SERCOS communication architecture, it is designed for demanding industrial motion-control systems requiring coordinated servo operation. Its 700 VDC nominal DC bus places it in a high-voltage drive class, making accurate electrical and firmware matching essential when replacing an installed unit.
For maintenance teams supporting legacy machinery, the DKC02.3-100-7-FW offers an exact-model replacement option without immediately redesigning the existing drive architecture.
DKC02.3-100-7-FW
DKC02.3-100-7-FW
DKC02.3-100-7-FW
DKC02.3-100-7-FW
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bosch Rexroth / Indramat |
| Model | DKC02.3-100-7-FW |
| Material Number | R911279430 |
| Product Family | ECODRIVE03 |
| Product Type | Digital Servo Drive Controller |
| Rated Current | 100 A |
| DC Bus Nominal Voltage | 700 VDC |
| Input Supply | 3-phase AC, 380–480 VAC |
| Input Frequency | 50–60 Hz |
| Maximum Output Voltage | 800 V |
| Output Phases | 3 |
| Communication Interface | SERCOS fiber-optic |
| Fiber Connections | X20 TX / X21 RX |
| Feedback Interfaces | X4 / X8 |
| Serial Interface | RS232 / RS485 |
| Control Voltage | 24 VDC |
| Protection Rating | IP20 |
| Operating Temperature | 0 to +45°C nominal |
| Maximum Ambient Temperature | Up to +55°C with derating |
| Dimensions (W × H × D) | Approx. 105 × 360 × 261 mm |
| Weight | Approx. 9.7 kg |
Technical values should be checked against the exact hardware revision and nameplate. The 700 V figure refers to nominal DC-bus voltage, not the incoming AC supply voltage.
Field Applications & Technical Pitfalls
Typical Applications
1. CNC Machine Tools
The DKC02.3 drive architecture supports coordinated servo motion in machine-tool applications. It can control high-power servo axes where accurate positioning and dynamic response are required.
2. Industrial Production Machinery
Large automated machines may use high-current servo drives for synchronized movement, feed systems, and high-inertia mechanical assemblies.
3. Multi-Axis Motion Control
Its SERCOS interface enables real-time communication between the drive and a compatible motion controller. This is particularly relevant in coordinated servo systems where multiple axes must operate according to a shared motion profile.
Three Replacement Checks Engineers Should Not Skip
1. Confirm the SERCOS interface.
The DKC02.3 is the SERCOS-interface version of the ECODRIVE03 family. Its X20 and X21 fiber-optic connections are part of the communication architecture. Do not substitute a DKC01, DKC03, or DKC11 drive solely because its current rating appears similar.
2. Verify the firmware and motor configuration.
The FW suffix indicates that firmware is a separate configuration consideration. Check the firmware family and release, motor identification parameters, encoder type, and feedback interface before commissioning. A replacement drive without the correct firmware or parameter set may not operate with the original machine.
3. Match the electrical and mechanical ratings.
Verify the incoming three-phase supply, DC-bus requirements, current rating, motor voltage, and regenerative braking arrangement. Also inspect cabinet ventilation and installation clearances. Incorrect sizing or inadequate cooling can lead to drive faults and premature component failure.
Field note: A common replacement problem occurs when a drive is selected by its 100 A rating alone. Even when the power stage appears similar, a different communication interface or firmware family can prevent the machine controller from establishing the required motion-control connection.
Important: This drive operates in a high-voltage power system. Allow the DC bus to discharge according to the manufacturer’s instructions before servicing. Installation and commissioning should be performed by qualified personnel.
Quality Control (QC) SOP & Transparency
Our inspection process for the Rexroth DKC02.3-100-7-FW focuses on exact identification, power-stage condition, and communication interfaces.
- Part Number Verification: Confirm .3-100-7-FW and material number R911279430 against the customer’s requirement.
- Visual Inspection: Examine the enclosure, front panel, cooling surfaces, connectors, and internal accessible components for physical damage.
- Interface Inspection: Check SERCOS fiber connections X20/X21, feedback connectors X4/X8, and serial communication interfaces.
- Electrical Inspection: Where suitable equipment and approved procedures are available, perform applicable electrical checks on the power and control circuits.
- Functional Testing: Where a compatible ECODRIVE03 test setup is available, verify startup, status indicators, communication, and applicable drive functions.
- Firmware Review: Record the available firmware identification and compare it with the customer’s original drive requirements.
- Final QA and Packaging: Document inspection findings and use protective packaging for the drive’s connectors and power terminals.
Live video inspection can be arranged after the goods arrive at our headquarters. A 12-month warranty is available, subject to order confirmation and the agreed product condition.
Frequently Asked Questions (FAQ)
Q1: What is the Rexroth .3-100-7-FW?
It is a 100 A digital servo drive controller from the Bosch Rexroth Indramat ECODRIVE03 family, designed for industrial AC servo motor control.
Q2: What is the rated current of this drive?
The .3-100-7-FW has a 100 A current rating. Confirm the continuous and peak operating requirements against the applicable technical documentation.
Q3: What communication interface does it use?
It uses SERCOS fiber-optic communication, with X20 serving as the transmitter and X21 as the receiver connection.
Q4: What is the material number?
The associated Bosch Rexroth material number is R911279430.
Q5: Does the drive include firmware?
Firmware is a separate configuration consideration for this model. Confirm the firmware identification and required release before ordering, especially when replacing a drive in an existing machine.
Q6: Can it replace another drive with a different current rating?
Not automatically. The replacement must match the required current class, voltage class, firmware, motor feedback, and machine communication configuration.
Q7: What warranty and inspection support do you provide?
We offer a 12-month warranty, subject to order confirmation and product condition. Part-number verification, visual inspection, and applicable functional testing can be arranged. Live video inspection is also available after the goods arrive at our headquarters.
