Schneider Electric ATV212WU22N4C Altivar 212 Variable Frequency Drive

Product Overview

The ATV212WU22N4C (ATV212WU22N4C) is a dedicated HVAC variable frequency drive (VFD) optimized for pumping, ventilation, and air conditioning applications. Engineered for high-reliability performance in building management systems (BMS), this 2.2 kW controller operates at 480 V (3-phase) and features an integrated EMC Class C1 filter to minimize electromagnetic interference. With its robust IP55 protection rating, the unit is designed for decentralized installation outside of electrical cabinets, providing superior resistance against dust and water jets. This drive is a critical component for facility managers looking to reduce energy consumption by up to 70% while maintaining precise control over flow and pressure in commercial environments.

Technical Configuration

The Altivar 212 architecture is focused on "Eco-Design" and seamless integration into building automation networks. It eliminates the need for additional harmonic filters in most applications due to its reduced capacitance technology, which limits current distortion to less than 35% THD(i). The drive supports multi-protocol communication, including Modbus, METASYS N2, APOGEE FLN, and BACnet as standard. Its IP55 enclosure is specifically thermal-mapped to ensure high-efficiency cooling without the need for external ventilation, making it ideal for rooftop or mechanical room deployments where space and protection are paramount.

Technical Specifications

Technical FAQs

Does the ATV212WU22N4C require an external enclosure for outdoor use?

No, the IP55 rating indicates the drive is protected against dust ingress and low-pressure water jets from any direction. It can be mounted directly on the wall or machine frame, provided it is shielded from direct sunlight and extreme precipitation.

What is the primary difference between the Altivar 212 and the Altivar 320 or 630?

The Altivar 212 is specifically "HVAC-optimized." It lacks the high-torque features required for heavy industrial machinery (like conveyors) but includes specialized software functions for fans and pumps, such as "Fire Mode," "Sleep/Wake," and "Damper Control."

Can this drive be used with single-phase input?

No, the ATV212WU22N4C is strictly designed for 3-phase input. Attempting to run the drive on single-phase power will result in an input phase loss fault (PHF) and may damage the DC bus capacitors.

Engineering & Installation Guide

• Harmonic Mitigation: Unlike standard industrial drives, the ATV212 utilizes a specialized DC bus design that inherently reduces harmonics. You generally do not need to install line reactors to meet IEEE 519 standards in building applications, which saves significant installation space and cost.

• Cable Selection and Grounding: To maintain the EMC Class C1 rating, use shielded motor cables. Ensure the shield is bonded 360 degrees to the drive's grounding plate. For IP55 units, use appropriate liquid-tight cable glands to maintain the enclosure's integrity at the entry points.

• Mounting Clearance: Even with an IP55 rating, thermal management is vital. Maintain at least 10 cm of vertical clearance above and below the unit. If mounting multiple drives side-by-side, ensure a minimum horizontal gap of 5 cm to allow for natural convection cooling across the heat sink fins.