Lenze ESV373N04TXBXX1A42 SMVector SMV Frequency Inverter Unit

Module Feature

ESV373N04TXBXX1A42 is a compact general-purpose variable frequency drive from Lenze SMVector SMV series.

It supports V/F and sensorless vector control modes for asynchronous induction motors. It comes with integrated EMC RFI filter and brake chopper as standard. It features skip frequency, PID process regulator, multi-speed preset and fault memory function. Modbus RTU communication is available for connection to PLC and HMI. It is widely stocked as spare for conveyors, fans, pumps and simple machine automation cabinets.

Working principle

Three-phase AC input is rectified to DC bus voltage, then IGBT inverter outputs adjustable frequency and voltage to drive the motor.

The control board samples output current and bus voltage continuously, adjusts the IGBT firing sequence according to speed setpoint. During rapid deceleration, the built-in brake chopper dissipates regenerative energy into external braking resistor. It provides overcurrent, overvoltage, overload, overheat and motor phase loss protection.

Onboard components

Input rectifier stack, IGBT power module, main control PCB, voltage/current sensing circuit, built-in EMC filter, brake chopper circuit, cooling fan, local keypad and metal housing.

LED indicators

Front LEDs indicate power, run, fault and communication status.

Hardware self‑diagnosis

Drive monitors heat sink temperature, output current, DC bus voltage and IGBT status. All parameters can be viewed and modified via local keypad.

Programming software

Lenze EZKeypad / SMVector PC software, used for parameter setup, fault log review and configuration backup.

Electrical & Process Parameters

Model: ESV373N04TXBXX1A42 Brand: Lenze Device type: SMVector SMV variable frequency drive Function: Motor speed regulation, torque control and process PID regulation for industrial rotating loads

Mechanical & Structure

Mounting: Panel mounting inside control cabinet Protection class: IP20 Housing: Metal chassis with cooling fan

Environmental

Operating temperature: 0℃ ~ +45℃ Storage temperature: -40℃ ~ +85℃ Ambient humidity: 5~95% non‑condensing

Certification: CE Status: Original Lenze automation spare

Installation

Cut off three-phase main power before replacement.

Secure drive to cabinet backplate, connect main power cable, motor cable and brake resistor wiring, wire analog/digital control signals, set motor nameplate parameters, test speed regulation and alarm function after commissioning.

Interface

3-phase power input terminals, motor output terminals, brake resistor terminals, analog/digital I/O terminals, Modbus RTU communication port, keypad connector.

Diagnostic

Overcurrent fault: Motor short circuit, cable insulation damage or acceleration time too short. Overheat alarm: Fan blocked, dust accumulation or insufficient cabinet ventilation. PID unstable: Noisy feedback signal or improper PID gain setting.

Product Brief

ESV373N04TXBXX1A42 inverter, Lenze SMVector SMV 37.5kW 480V variable frequency drive spare for fan, pump and general machinery speed control replacement.