Emerson SKC3400220 Commander SK AC Inverter Drive – Product Description

Overview

The Emerson SKC3400220 Commander SK drive provides dependable and flexible motor control for a wide range of industrial applications. It is part of the proven Commander SK series, which focuses on simplifying installation while maintaining strong performance and long-term reliability. Moreover, its compact structure supports quick panel integration, helping engineers reduce commissioning time on both new and retrofit systems.

This model delivers stable speed regulation for three-phase induction motors and offers multiple control strategies to suit different mechanical loads. In addition, its conformal-coated electronics withstand dust, vibration, and humidity, making it ideal for demanding plant environments. Many users appreciate its predictable behavior, straightforward interface, and built-in protection functions that enhance equipment uptime.

Technical Specifications

General

• Model: SKC3400220

• Series: Commander SK Series

• Type: General-purpose AC inverter drive

Electrical Performance

• Rated Power: 2.2 kW (3 HP)

• Input Voltage: 400 V AC, 3-phase

• Input Frequency: 45–65 Hz

• Output Voltage: 400 V AC, 3-phase (variable frequency)

• Output Current: 5.1 A

Control & Features

• Control Modes: V/f, Sensorless Vector Control

• Braking: Integrated braking transistor

• EMC Filtering: C3 industrial EMC filter

Environmental

• Operating Temperature: –10 °C to +40 °C

• Storage Temperature: –25 °C to +55 °C

• Protection Features: Overvoltage, undervoltage, overcurrent, short-circuit, thermal protection

Mechanical

• Mounting: Panel or DIN-rail

• Weight: 1361 g

• Certifications: CE, UL, RoHS

Applications

• Pumps and blowers

• Fan control systems

• Conveyors and packaging lines

• Compressors and general machinery

• Energy-efficient motor control in manufacturing plants

FAQ

Q1: Does the SKC3400220 support sensorless vector control?
Yes. It includes both V/f and sensorless vector modes for improved torque and speed stability.

Q2: Can this drive be mounted on a DIN-rail?
It supports both DIN-rail and panel mounting, offering flexible installation options.

Q3: Is a braking resistor required for dynamic braking?
The module includes a braking transistor, and an external resistor can be added for heavy braking demands.

Q4: Where is the Commander SK series commonly used?
It is used across pumps, fans, conveyors, HVAC systems, and general industrial automation.

Q5: Does it include EMC filtering?
Yes. It features a C3 EMC filter for operation in industrial environments with electrical noise.