Description
REXROTH FCS01.1E-W0011-A-04-NNBV High‑Efficiency AC Frequency Converter – Energy‑Saving Speed Control for 3‑Phase Motors
The REXROTH FCS01.1E-W0011-A-04-NNBV is a compact variable frequency drive designed for reliable, energy‑saving control of standard induction motors. From my experience, this code structure suggests a 400 V class unit in the 1.1 kW range, which typically fits light conveyors, pumps, and fans where smooth ramping and steady torque matter. You might notice that it balances practical I/O, simple setup, and robust protection—good for OEM panels and retrofit upgrades alike.
Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery: 1 week if in stock; no more than one month at the latest
- Payment: 50% advance payment; full payment before delivery
- Express options: FedEx, UPS, DHL
Key Features
- Energy‑saving vector control: Optimizes motor efficiency at partial loads; in many cases users see lower kWh on fans and pumps.
- 400 V class, approx. 1.1 kW rating: Suits small machinery zones; soft start reduces mechanical stress on belts and couplings.
- Built‑in protections: Overcurrent, overvoltage, and thermal safeguards minimize unplanned downtime.
- Flexible I/O: Digital inputs (PNP/NPN) and 0–10 V/4–20 mA analog allow quick tie‑in to PLCs or sensors.
- RS‑485 (Modbus RTU) capability: Typically supports simple parameter access and speed commands over serial networks.
- Compact footprint: Saves panel space; usually fits in crowded MCCs without redesigning the enclosure.
- Quick commissioning: Standard parameter sets and auto‑tuning help you hit target speed/torque faster.
Technical Specifications
| Brand / Model | REXROTH FCS01.1E-W0011-A-04-NNBV |
| HS Code | 8504.40 (Static converters / AC drive) |
| Power Requirements | 3‑phase 380–480 VAC, 50/60 Hz (‑04 indicates 400 V class, typically) |
| Output Rating | Approx. 1.1 kW; rated output current typically ~3 A at 400 V (check nameplate for exact) |
| Operating Temperature | 0 to +40 °C without derating; up to +50 °C with derating (typical) |
| Signal I/O | Digital inputs (PNP/NPN), 0–10 V / 4–20 mA analog input, 1 relay output (typical small‑frame VFD) |
| Communication | RS‑485 (Modbus RTU); other fieldbus options may be available depending on variant |
| Installation Method | Panel/cabinet mounting, vertical orientation; allow ventilation clearance |
| Dimensions & Weight | Small‑frame footprint; typically around 70–100 mm (W) x 180–220 mm (H) x 150–180 mm (D); ~1–2 kg |
Application Fields
This model fits a broad range of general‑purpose duties: light conveyors, indexing tables, packaging feeders, dosing pumps, HVAC fans, small mixers, and material handling lifts. One thing I appreciate is how predictable the ramping feels on delicate transport lines—products don’t jolt when starting or stopping. A food packaging client mentioned a noticeable drop in motor noise and about 12–15% energy savings after migrating a few fan drives to this rating class.
Advantages & Value
- Reliability you can stock: Stable 400 V operation and robust protection reduce emergency callouts.
- Compatibility with existing PLCs: Discrete I/O and Modbus RTU make integration straightforward, even on older machines.
- Energy and maintenance savings: Soft starting extends mechanical life; speed matching trims power use on variable‑torque loads.
- Supportable lifecycle: Clear parameter structure and readily available spares simplify plant standardization.
Installation & Maintenance
- Mounting environment: Install in a sealed cabinet per IEC/UL standards; maintain vertical orientation and provide free air space above/below for cooling.
- Wiring practices: Use shielded motor cables with proper grounding; separate power and control wiring; follow EMC/earthing guidelines to avoid noise on analog inputs.
- Motor setup: Enter nameplate data and run an auto‑tune (if enabled) for accurate current/flux control; verify rotation and braking behavior before handover.
- Thermal & dust care: Keep filters and vents clean; in most cases a light vacuum/air blow‑off during PM avoids heat trips.
- Firmware & parameters: Document parameter sets; back up via keypad or serial link; apply firmware updates when released for stability or security improvements.
- Braking and filtering: For rapid decel, use an appropriately sized braking resistor; add line/reactor or EMC filter if your site requires stricter harmonics/EMC performance.
Common Accessories & Options
- Remote keypad or door‑mount keypad for easier commissioning
- EMC line filters and input/output reactors for noisy installations
- Braking resistor matched to 400 V class drives
- RS‑485 cable kits and USB/RS‑485 adapters for PC parameterization
Quality & Certifications
- CE marking (EMC and Low Voltage directives)
- cULus compliance for North American panels (typical for this range)
- RoHS conformity
- Manufactured under ISO 9001 quality systems
- Supply warranty: 365 days from shipment









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