OMRON 3G3MX2-A4075-E

Overview

OMRON 3G3MX2-A4075-E is a compact multi-function variable frequency drive from the OMRON MX2 series, 400V three-phase class, rated 7.5kW heavy duty / 11kW normal duty. It supports open-loop V/f and sensorless vector control for both induction motors and permanent magnet motors, widely supplied as exchange spare for packaging machines, conveyors, pumps, fans and general machine tool control cabinet overhaul and drive replacement.

Features

OMRON 3G3MX2-A4075-E delivers high starting torque up to 200% at low speed, supporting open-loop torque control and built-in simple positioning logic. It carries dual overload rating: 150% for 1 minute for heavy-duty constant torque loads and 120% for 1 minute for variable torque fan and pump loads. The integrated safe torque off function meets PL d according to EN ISO 13849-1 for machine safety requirements.

OMRON 3G3MX2-A4075-E comes with standard RS-485 Modbus slave communication, and optional communication modules can be fitted for EtherCAT, EtherNet/IP, PROFIBUS DP, DeviceNet and MECHATROLINK II connection. The front panel keypad and display support local parameter setup, real-time monitoring and fault history review. Built-in protection functions include overcurrent, overvoltage, undervoltage, overload, phase loss, heatsink overtemperature and motor stall protection. Configuration and diagnostic tools are available via OMRON software. It complies with CE and UL standards for indoor cabinet mounting with IP20 rating.

Specs

OMRON 3G3MX2-A4075-EPlatform: OMRON MX2 series inverter Catalog number: 3G3MX2-A4075-E Input: 3-phase 380–480 VAC, 50/60Hz Motor rating: 7.5 kW (HD), 11 kW (ND) Output current: 18 A (HD), 23 A (ND) Control modes: V/f control, sensorless vector control Max output frequency: up to 590 Hz Communication: standard Modbus RTU, optional fieldbus cards Safety: Safe Torque Off, PL d Mounting: cabinet installation Protection rating: IP20 This is a complete variable frequency drive unit, not a soft starter or motor protection relay. OMRON 3G3MX2-A4075-E is widely supplied as service replacement spare for machine motion control and speed regulation loop failure.

Principle

OMRON 3G3MX2-A4075-E converts three-phase AC supply into DC via rectifier, then generates adjustable-frequency three-phase PWM output through IGBT inverter bridge to regulate motor speed and torque. The internal sampling circuit continuously monitors output current, DC bus voltage and heatsink temperature. When operating conditions exceed preset thresholds, the drive blocks PWM output, triggers trip and stores fault codes, and sends alarm signals to the upper PLC or control system via communication bus.

Applications

OMRON 3G3MX2-A4075-E is deployed for material handling conveyors, packaging lines, water pumps, blowers and general automation machinery. It is selected for spare inventory and machine control cabinet retrofit projects for existing OMRON MX2 variable frequency drive systems.