Schneider ATV320U75N4C – Variable Speed Drive | Altivar 320 Series
Engineering Background
The Altivar 320 (ATV320) is Schneider Electric’s compact, application-optimized variable speed drive platform designed for OEM machine builders and system integrators. It succeeds the ATV312 series and delivers enhanced motor control performance, integrated safety functions, and flexible fieldbus connectivity in a DIN-rail or panel-mount form factor.
Product Positioning
The ATV320U75N4C is the 7.5 kW (10 HP) variant for 3-phase 380–500 V networks, with an integrated EMC filter (Class C2) and CANopen communication port. It is purpose-built for conveyor systems, packaging machinery, pumps, fans, and compressors where precise speed regulation and compact installation are critical. Konmask.com supplies this model as a verified OEM unit with full traceability documentation.
Complete Technical Specifications
| Part Number | ATV320U75N4C |
| Brand / Series | Schneider Electric / Altivar 320 |
| Motor Power (kW) | 7.5 kW (10 HP) |
| Supply Voltage | 3-Phase 380–500 V AC ±10% |
| Supply Frequency | 50/60 Hz |
| Output Current (Nom.) | 17 A |
| Output Frequency Range | 0.1–500 Hz |
| Control Method | V/f, Sensorless Flux Vector (SVC), Closed-Loop Flux Vector (FVC) |
| EMC Filter | Integrated, Class C2 (EN 61800-3) |
| Communication | CANopen (integrated), Modbus RTU (RJ45) |
| Protection Degree | IP20 (panel mount) |
| Braking | Dynamic braking transistor integrated |
| Safety Function | STO (Safe Torque Off) – SIL 2 / PLd |
| Ambient Temperature | -10°C to +50°C (derating above 40°C) |
| Altitude | Up to 1000 m (derating above) |
| Humidity | 5–95% RH, non-condensing |
| Dimensions (H×W×D) | Approx. 270 × 105 × 170 mm |
| Weight | Approx. 3.5 kg |
| Certifications | CE, UL, cUL, RoHS |
| Successor / Predecessor | Succeeds ATV312HU75N4; compatible with ATV320 accessories |
Proven Application Environments
- Conveyor & Material Handling: Precise belt speed control with smooth acceleration/deceleration profiles to protect product integrity.
- Packaging Machinery: High dynamic response for indexing, filling, and sealing stations requiring tight speed synchronization.
- Pump & Fan Systems: Energy-saving PID control with sleep/wake function reduces power consumption by up to 50% vs. DOL starting.
- Compressors: Soft-start capability eliminates mechanical stress and reduces peak inrush current.
- Textile & Printing Machines: Closed-loop flux vector control ensures constant tension and register accuracy.
- HVAC Systems: Integrated EMC filter and CANopen bus simplify integration into building automation networks.
Engineering Advantages
- Integrated EMC Filter (C2): Eliminates the need for an external filter, reducing panel footprint and BOM cost.
- STO Safety Function: Meets Machinery Directive 2006/42/EC SIL 2 / PLd without additional safety relay in most architectures.
- Dual Communication: CANopen + Modbus RTU on the same unit enables flexible integration into both machine-level and plant-level networks.
- Compact DIN-Rail / Panel Mount: Optimized for space-constrained OEM enclosures; side-by-side mounting supported with derating.
- Embedded PLC Logic: Simple application functions (PID, ramp, preset speeds) programmable without external PLC for cost reduction.
- Wide Voltage Tolerance (±10%): Robust operation in industrial environments with unstable grid supply.
System Architecture & Signal Flow
The ATV320U75N4C operates within a typical drive system as follows:
- Power Input: 3-phase 380–500 V AC → Integrated EMC filter → Rectifier bridge → DC bus (approx. 540–700 V DC).
- DC Bus: Shared bus topology supported; dynamic braking transistor connects external braking resistor for regenerative energy dissipation.
- Inverter Stage: IGBT-based PWM inverter → 3-phase variable voltage/frequency output to motor.
- Control Layer: Analog inputs (AI1/AI2: 0–10 V / 0–20 mA), digital inputs (DI1–DI6, 24 V DC), relay outputs (R1/R2), and CANopen/Modbus for setpoint and status exchange with PLC/SCADA.
- Safety Channel: STO input (STO1/STO2) hardwired to safety PLC or safety relay; disables gate drive without removing main power.
Sourcing & Quality Verification
- OEM Origin: All ATV320U75N4C units sourced through authorized Schneider Electric distribution channels or verified surplus with full chain-of-custody documentation.
- Incoming Inspection: Visual inspection, label verification (date code, country of origin), and functional power-on test performed before shipment.
- Packaging: Original Schneider Electric anti-static packaging retained where possible; re-packaged units use ESD-safe materials with desiccant.
- Warranty: 12-month Konmask warranty covering manufacturing defects; DOA replacement within 7 business days.
- Documentation: CE Declaration of Conformity, test report, and packing list provided with every shipment.
Procurement Process
- Confirm Part Number: Verify ATV320U75N4C matches your motor nameplate (7.5 kW, 3-phase 380–500 V) and required communication protocol (CANopen).
- Request Quote: Contact support@konmask.com with quantity, required delivery date, and destination port.
- Review Proforma Invoice: Includes unit price, freight, insurance, and HS code (8504.40) for customs clearance.
- Payment & Lead Time: T/T or L/C accepted. In-stock units ship within 3–5 business days; lead time for bulk orders quoted separately.
- Shipping & Tracking: DHL / FedEx / sea freight options available; tracking number provided within 24 hours of dispatch.
- After-Sales Support: Technical commissioning support available via email or video call; Schneider SoMove software configuration assistance included.
Technical FAQ
Q: Can ATV320U75N4C replace ATV312HU75N4 directly?
A: Yes, the ATV320 is the direct successor to the ATV312. Terminal layout and parameter structure differ; refer to the ATV320 migration guide (Schneider document NVE41295) for mapping tables.
Q: Is an external EMC filter required?
A: No. The “C” suffix in ATV320U75N4C denotes an integrated Class C2 EMC filter, compliant with EN 61800-3 for industrial environments.
Q: What braking resistor is compatible?
A: Schneider recommends the VW3A7706 or VW3A7707 braking resistor for 7.5 kW applications. Minimum resistance: 27 Ω; peak power rating: ≥ 3× motor rated power.
Q: Does STO function require a safety PLC?
A: STO can be activated by a safety relay (e.g., Schneider XPSAF) or a safety PLC output. It does not require removal of main power and achieves SIL 2 / PLd when wired per the ATV320 safety manual.
Q: What software is used for parameter configuration?
A: Schneider SoMove (free download) via USB/RJ45 adapter, or the integrated HMI keypad (optional VW3A1111). EcoStruxure Machine Expert – Basic is supported for embedded logic programming.
Q: Can multiple ATV320 drives share a DC bus?
A: Yes, shared DC bus topology is supported with the ATV320 DC bus connection kit. Consult Schneider application note AN-ATV320-DCBUS for sizing and protection requirements.
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