The Schneider Electric ATV310HD18N4E is an 18.5 kW (25 hp) Variable Speed Drive from the Easy Altivar 310 series. It shares the same physical frame size as the 15 kW model but offers higher current capacity for heavier industrial loads.
Technical Specifications
Power Output (Dual Rated):
Heavy Duty (HD): 18.5 kW (25 hp) for constant torque applications.
Normal Duty (ND): 22 kW (30 hp) for variable torque (fans/pumps).
Input Voltage: 380...460 V AC, 3-phase.
Output Current:39 A (HD) / 43 A (ND).
Frequency Range: 0.5 to 400 Hz.
Communication: Integrated Modbus RTU (RJ45).
Key Features
Ruggedized: Boards are coated (Class 3C3) for protection against chemical and salt corrosion.
Thermal Management: Operates reliably up to 55C ambient temperature.
High Torque: Delivers up to 170%200% overtorque for 60 seconds, essential for starting heavy machinery like conveyors or mixers.
1. Advanced Thermal & Environmental Protection
High Temperature Limit: Unlike many drives that struggle in heat, this model works up to 55C (131F) without needing to reduce its power output (de-rating).
Corrosion Resistance: The internal circuit boards are 3C3 coated, meaning they are protected against chemical gases and high humidityideal for textile or chemical plants.
Sealed Airflow: The cooling fan pushes air through a dedicated channel that is separated from the electronics, preventing dust and lint from settling on the circuit boards.
2. High Starting Performance
Torque Boost: It can provide 170% to 200% over-torque for 60 seconds. This is critical for starting heavy machines like large conveyors, mixers, or crushers that are difficult to get moving from a standstill.
Sensorless Vector Control (SVC): This gives you very precise control over motor speed and torque without needing an expensive encoder on the motor.
3. Integrated Functions
Modbus Communication: Built-in Modbus RTU port (RJ45) allows you to connect it to a PLC or SCADA system for remote control and monitoring.
Dual Rating: You can program it for Heavy Duty (18.5 kW) or Normal Duty (22 kW) depending on whether you are running a constant torque machine or a simple fan/pump.
Energy Saving Mode: It has a built-in algorithm that reduces energy consumption by up to 30% when the motor is running at less than full load.
4. Maintenance & Safety
Motor Protection: Monitors for motor phase loss, short circuits, and thermal overload.
Drive Protection: Protects against line supply overvoltage/undervoltage and internal overheating.
Simple Setup: Most parameters can be set using the bright 4-digit LED display on the front, or you can copy settings from another drive in seconds using a "Simple Loader" tool.
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