Schneider Altivar 21 ATV21WU75N4C Variable Frequency Drive

Description

The ATV21WU75N4C is a Variable Frequency Drive (VFD) from the Altivar 21 series, engineered for the efficient speed control of three-phase asynchronous motors. Designed for a power rating of 7.5 kW (10 HP) and an operating voltage of 480V, this drive provides precise motor torque and speed management in demanding industrial environments. The ATV21WU75N4C features an integrated EMC filter (Class B) to minimize electrical interference and is enclosed in an IP54-rated housing, providing protection against dust and water splashes. This combination of rugged protection and high-performance control makes it a suitable solution for HVAC and pumping applications.

Features

• Dedicated control for three-phase asynchronous motors
• Integrated EMC filter (Class B) for electromagnetic compatibility
• IP54-rated enclosure for enhanced environmental protection
• Compact and robust design for reliable industrial operation
• Precise control of motor speed and torque

Applications

• HVAC systems (fans and air handling units)
• Industrial pumping systems
• Building automation and environmental control
• Centrifugal machinery
• Flow and pressure control applications

Technical Specifications

Installation Guidelines

• Mounting: Install in a vertical position on a flat, non-flammable surface. Ensure adequate spacing above and below the unit for proper heat dissipation.
• Environmental: Ensure the installation environment adheres to the IP54 protection requirements. Avoid direct exposure to corrosive gases, high humidity, or extreme heat.
• Wiring: Connect the motor and power supply according to the provided terminal designations. Use shielded cables for motor connections to maintain EMC compliance.
• Grounding: Proper grounding of the drive chassis is mandatory to ensure safety and reliable electromagnetic compatibility.
• Ventilation: Do not block cooling vents; ensure ambient temperature remains within specified operating limits to prevent thermal shutdown.