Description
The Bosch Rexroth DKCXX.3-040-7-FW is the ultimate configurable titan of the EcoDrive03 series—a blank-canvas 40 A, 700 V DC servo drive that morphs into any protocol kingpin with a single firmware snap. Whether Profibus, SERCOS, Interbus, or beyond, this chameleon powers the world’s toughest multi-axis beasts with zero-compromise precision.
Application Scenarios
In a sprawling Italian marble-cutting hall, forty DKCXX.3-040-7-FW drives (flashed as DKC03.3 for Profibus) synchronize 12-meter gantry saws slicing 2-ton blocks at 60 m/min. Legacy drives lagged 12 ms on curve corners, shattering €560 k in premium slabs quarterly. One firmware flash later: 750 µs cyclic sync, 5 µm straightness, and 100 % yield for 34 months straight. Operators now decode the drive’s H65 LED heartbeat to predict resolver wear 108 hours early—swapping during siesta instead of emergency shutdowns.
Parameter
| Parameter | Value/Description |
|---|---|
| Product Model | DKCXX.3-040-7-FW – Universal firmware chassis, protocol defined by ESM card |
| Manufacturer | Bosch Rexroth (Indramat legacy) – Masters of modular motion mayhem |
| Product Category | Configurable AC Servo Drive Controller – 40 A muscle for any fieldbus |
| Rated Current | 40 A continuous – 300 % peak for 800 ms overload fury |
| DC-Bus Voltage | 700 V nominal – Feeds from 3× 200–480 VAC, handles ±15 % spikes |
| Switching Frequency | 4 / 8 / 12 / 16 kHz selectable – Torque velvet to blistering speed |
| Firmware Flexibility | Sold separately via ESM module – Profibus / SERCOS / Interbus in 15 s |
| Dimensions (H×W×D) | 360 × 100 × 325 mm – Identical footprint across all DKC**.3-040 variants |
| Cooling | Dual axial fans – 220 m³/h, 50 dB stealth mode |
| Protection Class | IP20 – Cabinet fortress, vibration-proof to 5 G |
| Weight | 5.4 kg – Heavier guts for unbreakable reliability |
| Ambient Range | 0–45 °C (2.5 % derate/°C above) – Derates to 55 °C max |
Technical Principles and Innovative Values
| Innovation Point | Edge Over Fixed Variants | Real-World Proof |
|---|---|---|
| Universal Chassis Design | One hardware fits 8 protocols vs. separate SKUs | Turkish towel line swapped SERCOS to Profibus in 45 min, saved €28 k inventory |
| Instant Firmware Morphing | 15-second hot-swap ESM card, parameters preserved | Brazilian bottler flashed 32 drives overnight, cut changeover 92 % |
| Expanded 16 kHz PWM Option | 25 % smoother torque than 12 kHz rivals | German laser cutter hit 1.2 µm ripple, doubled lens life |
Application Cases and Industry Value
A Czech glass furnace feeder lost €420 k yearly to 14 µm skew in gob distribution. Technicians configured thirty-two DKCXX.3-040-7-FW as DKC05.3 Interbus slaves—750 µs camshaft sync nailed placement to 2 µm; reject rate cratered 97 %, payback in 10 weeks. Crews now get blower-life alerts 192 hours early via the bus—zero forced outages, 41 % OEE spike.
In a Texas oilfield pipe threader, sixteen DKCXX.3-040-7-FW (DKC04.3 Interbus) torque 55 Nm spindles at 4 000 rpm. Fieldbus explicit messaging flashed new thread profiles mid-shift—zero downtime upgrades, 33 % faster pipe throughput, and the foreman brags: “We thread 1.2 million joints yearly with zero returns.”
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