Omron 3G3IV-B4220-EV2 AC Drive (22kW, 400V)

The Omron 3G3IV-B4220-EV2 is a high-performance AC drive designed for variable speed control of three-phase induction motors. Rated at 22 kW (30 HP) with an input voltage of 400 V AC (3-phase), this drive offers sensorless vector control for high torque at low speeds. It is part of the 3G3IV series, which is known for robust construction and advanced motor control features. The drive includes a built-in EMC filter, RS-422/485 communication, and a user-friendly keypad. It is suitable for demanding applications such as pumps, fans, conveyors, extruders, and compressors in industrial environments. The 3G3IV series is manufactured by Yaskawa for Omron, ensuring high reliability and performance.

Technical Specifications

Input voltage: 3-phase 380-480 V AC ±10%, 50/60 Hz. Motor power: 22 kW (30 HP). Output current: 45 A (normal duty). Overload: 150% for 60 seconds. Control method: sensorless vector control, V/f control. Output frequency: 0.1-400 Hz. Communication: RS-422/485 (Modbus RTU). Digital inputs: 8 (programmable). Analog inputs: 2 (0-10 V, 4-20 mA). Digital outputs: 3 (relay). Analog output: 1 (0-10 V). Built-in EMC filter: yes (C3 class). Protection: overcurrent, overvoltage, undervoltage, overload, short-circuit. Dimensions: 350 mm (H) × 220 mm (W) × 200 mm (D). Weight: 12 kg. Operating temperature: -10°C to 40°C. Storage: -20°C to 60°C. Protection: IP20. Certifications: CE, UL, cUL.

Key Features

• 22 kW power rating for medium-to-large motors

• Sensorless vector control for high torque at low speeds

• Built-in EMC filter for CE compliance

• RS-422/485 communication (Modbus RTU)

• Multi-function digital and analog I/O

• PID control, energy saving, and torque limiting

• User-friendly digital keypad with display

• Heavy-duty design for industrial applications

Control and Performance

The 3G3IV-B4220-EV2 offers sensorless vector control, providing high torque even at low speeds (150% at 0.5 Hz). The drive also supports V/f control for simple applications. Advanced features include slip compensation, torque boost, and energy-saving optimization. The built-in PID controller allows closed-loop control of pressure, flow, or temperature without external controllers. The drive can be controlled via the keypad, analog inputs, or serial communication (Modbus RTU).

Communication and Integration

The RS-422/485 port supports Modbus RTU protocol, allowing integration with PLCs and SCADA systems. The drive can be configured and monitored via Omron's CX-Drive software or through a PLC using Modbus commands. The built-in EMC filter ensures compliance with European EMC standards, reducing the need for external filtering. The drive also supports fieldbus options via optional communication cards (PROFIBUS, DeviceNet, EtherNet/IP).

Applications

The 3G3IV-B4220-EV2 is used in industrial applications such as pumps and fans (variable speed control for energy savings), conveyors (speed regulation), extruders and mixers (torque control), compressors (load matching), and machine tools (spindle drives). Its heavy-duty design makes it suitable for continuous operation in demanding environments.

Installation and Wiring

Mount the drive vertically on a panel, ensuring adequate clearance for cooling. Connect the input power (380-480 V AC) to the R, S, T terminals. Connect the motor to U, V, W terminals. Use shielded cables for the motor and control wiring. Connect the control signals (start/stop, speed reference) to the I/O terminals. The drive includes an internal DC bus; wait for the charge LED to turn off before servicing. Set parameters using the keypad: motor nameplate data, acceleration/deceleration times, and control mode.

Maintenance and Diagnostics

LED indicators: POWER, RUN, FAULT. The digital display shows output frequency, current, or fault codes. Common faults: overcurrent, overload, overvoltage, undervoltage. The drive stores fault history for troubleshooting. Periodically check the cooling fan (replace after 3-5 years). Keep the heat sink clean from dust.

Conclusion

The Omron 3G3IV-B4220-EV2 AC drive delivers reliable, high-performance motor control for heavy-duty industrial applications. Its sensorless vector control, built-in EMC filter, and communication capabilities make it a versatile choice for system integrators.