Motor Control Solution – Schneider Electric ATV320U55N4B | Altivar 320 Series
Where This Product Is Used
The Schneider Electric ATV320U55N4B is a 5.5 kW (7.5 HP) variable speed drive engineered for demanding industrial motor control applications. Engineers and system integrators specify this drive across a wide range of sectors:
- Water & Wastewater Treatment – Pump speed regulation for pressure control and energy savings in municipal water systems and sewage lift stations.
- HVAC & Building Automation – Fan and air handling unit (AHU) speed control in commercial buildings, data centers, and cleanrooms.
- Food & Beverage Processing – Conveyor belt and mixer drive control in hygienic production environments.
- Packaging Machinery – Precise speed and torque control for filling, labeling, and wrapping lines.
- Material Handling – Hoist, elevator, and conveyor applications requiring smooth acceleration and deceleration profiles.
- OEM Machine Building – Embedded into compact machine panels where DIN-rail mounting and small footprint are critical.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | ATV320U55N4B |
| Series | Altivar 320 (ATV320) |
| Brand | Schneider Electric |
| Motor Power (Normal Duty) | 5.5 kW / 7.5 HP |
| Supply Voltage | 380–500 V AC, 3-Phase |
| Output Current (Normal Duty) | 13.7 A |
| Output Frequency Range | 0.5–500 Hz |
| Control Type | Sensorless Flux Vector (SVC) / V/f |
| Mounting Style | Book / Panel Mount (IP20) |
| Communication | Modbus RTU (built-in); optional CANopen, EtherNet/IP, PROFIBUS DP |
| Display | Integrated 7-segment LED display |
| Braking | Built-in braking transistor |
| Protection Class | IP20 (panel mount) |
| Ambient Temperature | -10°C to +50°C (operating) |
| Weight | 4.06 kg |
| Certifications | CE, UL, cUL, RoHS |
Why Engineers Specify This Model
- Compact Book-Mount Form Factor – The ATV320U55N4B’s slim profile allows side-by-side installation without derating, maximizing panel space efficiency.
- Built-in EMC Filter – Reduces conducted emissions, simplifying compliance with EN 61800-3 Category C2 without external components.
- Integrated Braking Transistor – Enables direct connection of an external braking resistor for applications with high-inertia loads or frequent stop cycles.
- Flexible Communication – Native Modbus RTU with optional fieldbus modules (CANopen, PROFIBUS, EtherNet/IP) supports integration into any plant network architecture.
- SoMove Software Compatible – Free PC configuration and commissioning tool accelerates setup and parameter backup.
- Energy Savings – Variable torque mode delivers up to 30% energy reduction on pump and fan loads versus fixed-speed operation.
Complete System Bill of Materials
For a fully functional ATV320U55N4B installation, engineers typically specify the following accessories:
- Input line reactor (recommended for weak grid or long cable runs)
- External braking resistor (for high-inertia or frequent-cycle applications)
- VW3A3616 – EtherNet/IP / Modbus TCP communication card (optional)
- VW3A3608 – CANopen communication card (optional)
- VW3A3601 – Remote graphic keypad with cable
- Shielded motor cable (max. 50 m without output filter)
- Output dV/dt filter (for cable runs >50 m or sensitive motor insulation)
Compliance & Industry Standards
- CE Marking – Compliant with EU Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU).
- UL / cUL Listed – Recognized for North American market installations.
- RoHS Compliant – Free of restricted hazardous substances per EU Directive 2011/65/EU.
- IEC 61800-5-1 – Safety requirements for adjustable speed electrical power drive systems.
- EN 61800-3 – EMC requirements, Category C2 with integrated filter.
Quality Assurance & Sourcing
Konmask.com sources the ATV320U55N4B exclusively from verified supply channels. Every unit undergoes incoming inspection including:
- Visual inspection for label authenticity and packaging integrity
- Serial number verification against manufacturer records where applicable
- Functional power-on test prior to dispatch
- Anti-static packaging and climate-controlled storage
We maintain traceability documentation for all shipments and can provide certificates of conformity upon request.
How to Source This Part
Ready to order or need a formal quotation? Contact our industrial automation team:
- Online: Add to cart and check out directly, or request a bulk quote via our contact form.
- Email: support@konmask.com
- Phone / WhatsApp: +0086 19859288691
- Lead Time: In-stock units ship within 1–3 business days; ex-stock orders confirmed at time of inquiry.
- Shipping: DHL Express, FedEx, UPS, and sea freight options available worldwide.
Application-Specific FAQ
Q: Can the ATV320U55N4B control a pump in a closed-loop PID configuration?
A: Yes. The drive has a built-in PID controller that accepts a 4–20 mA or 0–10 V feedback signal, enabling direct closed-loop pressure or flow control without an external PLC.
Q: Is the ATV320U55N4B suitable for use with IE3 / PM motors?
A: Yes. The drive supports permanent magnet (PMSM) and synchronous reluctance motors in addition to standard induction motors, using its sensorless flux vector control algorithm.
Q: What is the difference between ATV320U55N4B and ATV320U55N4C?
A: The suffix “B” denotes book (panel-mount) format; “C” denotes compact (standalone) format. Both share identical electrical ratings — the difference is mechanical form factor and mounting method.
Q: Does this drive require an external EMC filter?
A: No. The ATV320U55N4B includes an integrated EMC filter meeting Category C2 requirements, suitable for most industrial environments without additional external filtering.
Q: Can I use this drive in a STO (Safe Torque Off) safety circuit?
A: Yes. The ATV320 series includes a built-in STO function (SIL 2 / PLd) accessible via dedicated terminals, compatible with safety relay modules.
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