Schneider Altivar 21 ATV21WU30N4 Variable Frequency Drive

Description

The ATV21WU30N4 is a variable frequency drive from the Altivar 21 series, designed for industrial motor speed control. Rated for 3 kW (4 HP) and compatible with 480V power systems, this drive includes a built-in Class A EMC filter to assist in reducing electromagnetic interference. The unit is housed in an IP54-rated enclosure, providing a robust level of protection against dust and splashing water, making it suitable for environments where exposure to contaminants is a concern. The ATV21WU30N4 is engineered for reliable performance in applications such as HVAC systems and fluid management, ensuring energy efficiency and process control.

Features

• 3 kW (4 HP) power rating
• 480V supply voltage compatibility
• Integrated Class A EMC filter
• IP54 enclosure for protection against dust and water spray
• Designed for energy-efficient motor speed management

Applications

• Pump and fan control systems
• HVAC ventilation units
• Industrial process cooling
• Material processing machinery
• Fluid handling systems

Technical Specifications

Installation Guidelines

• Mounting: Mount the drive vertically on a flat, vibration-free surface. Ensure that the cooling air intake and exhaust are not obstructed.
• Environmental Considerations: The IP54 rating protects against splashing water and dust, but the unit must not be submerged or exposed to high-pressure cleaning.
• Grounding: Proper grounding of the drive chassis is essential to ensure the effectiveness of the internal EMC filter and to comply with electrical safety standards.
• Cable Selection: Use shielded power and control cables to maintain EMC performance. Keep motor cables as short as possible to minimize radiated interference.
• Ambient Temperature: Ensure the installation area temperature remains within the specified operating range to prevent thermal derating or failure.