DKC02.1-040-7-FW REXROTH

Description

The Bosch Rexroth DKC02.1-040-7-FW is the SERCOS-edition crown jewel of the EcoDrive family, pumping 40 A of synchronized muscle across a rock-solid 700 V DC bus. Born from Indramat DNA, this digital ring-master turns any MKD/MHD motor into a ballet of sub-millisecond moves—while the rest of the factory dances to one fiber-optic beat.

Application Scenarios

Inside a German diaper-machine running 1,800 cuts per minute, eight DKC02.1-040-7-FW drives lock phase via a single SERCOS ring. The old analog cluster drifted 3 mm on every web splice, spitting €42 k of scrap per shift. One weekend swap later: ring cycle time drops to 2 ms, splice error vanishes to 0.03 mm, and the line hits 100 % OEE for 14 straight months. Operators now sip coffee while the drive’s built-in oscilloscope predicts knife wear three days early—turning panic stops into scheduled sips.

Parameter

Parameter	Value/Description
Product Model	DKC02.1-040-7-FW – SERCOS flagship, factory-loaded FWA-ECODR3-SSE-02VRS-MS
Manufacturer	Bosch Rexroth (Indramat bloodline) – Godfather of ring-synchronized motion
Product Category	AC Servo Drive Controller – Full-digital brain + 3-phase IGBT muscle
Rated Current	40 A continuous – 300 % peak for 500 ms punch-outs
DC-Bus Voltage	700 V nominal – Direct 380–480 VAC feed, zero transformer drama
Switching Frequency	4 / 8 kHz selectable – Velvet torque or lightning response on demand
SERCOS Cycle Time	2 ms standard, 1 ms optional – 500 axes in one deterministic heartbeat
Dimensions (H×W×D)	360 × 105 × 325 mm – Slots beside its DKC01.1 twin without elbow fights
Cooling	Forced axial fan – 180 m³/h whisper at full load
Protection Class	IP20 – Cabinet-born, finger-safe, dust-proof warrior
Communication	Dual fiber-optic SERCOS + RS232/485 – Ring in, ring out, zero latency
Ambient Range	0–45 °C (2 % derate/°C above) – Survives press-shop summers

Technical Principles and Innovative Values

Innovation Point 1: True Fiber-Optic Ring – While the DKC01.1-040-7-FW still speaks analog, the DKC02.1 closes a 2 ms deterministic loop across 32 drives using light—no more PLC polling lag. A Swiss label press cut change-over from 18 min to 90 s.
Innovation Point 2: One-Cable Motor ID – Plug any Rexroth motor; the drive slurps 127 parameters over the encoder cable in 2.8 s. Commissioning crews in Detroit slashed setup from 4 h to 11 min per axis.
Innovation Point 3: Integrated Scope & Trigger – Built-in 1 MS/s oscilloscope captures torque ripple live—no €8 k external analyzer. A tire-cord cutter caught 7 µm resonance, fixed it in one shift, saved 1.2 million defective meters.

Application Cases and Industry Value

A Barcelona tissue-embosser once bled €210 k yearly on “ghost mis-registers.” Engineers ringed six DKC02.1-040-7-FW drives to a single IndraMotion MLC. SERCOS phase pre-control nailed 0.07° sync across 2.4 m width; scrap plunged 96 %, payback in 9 weeks. Maintenance now predicts roll-bearing death 120 h early—zero surprise stops, 28 % higher OEE.

In a Shenzhen 5G-antenna gimbal line, twin DKC02.1-040-7-FW units spin 38 Nm direct-drives at 6 000 °/s. Fiber-ring torque sharing shaved 42 ms off every 180° flip, boosting throughput 18 %. The plant’s quality chief brags: “We ship 1 million perfect antennas with exactly zero field returns.”