Lenze EVF9330-EV Vector Drive Unit

Module Feature

EVF9330-EV belongs to Lenze classic 9300 Vector high-performance vector inverter series.

Rated power 45kW at 400V three-phase power supply, continuous output current 89A, 60s overload current 134A. It supports V/F control and encoder feedback closed-loop flux vector control, built-in PID process regulator and freely configurable digital/analog I/O. It has expansion slot for PROFIBUS, CANopen and other fieldbus modules, compatible with Lenze EPM memory module for parameter backup and copy. This model has been discontinued, widely used for old printing equipment, textile machinery, packaging lines, lifting and conveying equipment drive spare replacement.

Working principle

Three-phase AC power is rectified into DC voltage, then IGBT power unit converts DC into adjustable frequency and voltage PWM AC.

The main control board receives speed setpoint and encoder feedback signal, completes high-precision torque and speed closed-loop calculation. It integrates overload, overcurrent, earth fault, overvoltage, undervoltage and stall protection. When the protection threshold is triggered, the drive blocks output and stores fault code.

Onboard components

Rectifier assembly, IGBT inverter module, DC bus capacitor bank, current sampling circuit, main control board, operation keypad, cooling fan, power and control terminal block, option expansion slot.

LED indicators

Front panel LEDs indicate power, running status, fault alarm and communication status.

Hardware self‑diagnosis

Power-on self-test and real-time monitoring detect phase loss, ground fault, over-temperature, bus voltage abnormality, encoder signal loss and internal hardware failure, fault codes can be read on keypad.

Programming software

Lenze EASY Starter, DriveManager, used for parameter setting, motor auto-tune, fault log reading and parameter backup.

Electrical & Process Parameters

Model:EVF9330-EV Brand:Lenze Device type:Vector AC frequency inverter Input voltage:320~528V 3-phase AC Rated power:45kW Continuous output current:89A Overload current:134A (60s) Control mode:V/F / Closed-loop flux vector Function:Induction motor high precision speed and torque control

Mechanical & Structure

Mounting:Cabinet wall mount Protection class:IP20 Housing:Metal enclosed drive chassis

Environmental

Operating temperature:0℃ ~ +40℃ (derating above 40℃) Storage temperature:-25℃ ~ +70℃ Ambient humidity:5~95% non‑condensing Certification:CE, UL optional Status:Lenze original drive, discontinued

Installation

Install in well ventilated control cabinet, separate power cable and control cable wiring.

Input motor nameplate parameters and complete motor auto-tune after wiring. Install external brake resistor for frequent deceleration load. Regularly clean fan and radiator dust.

Interface

Three-phase power input terminals, motor output terminals, analog/digital I/O terminals, encoder feedback port, fieldbus expansion slot, keypad connector.

Diagnostic

Overcurrent fault: Motor cable short circuit, acceleration ramp too short, motor insulation damage.

DC bus overvoltage: Regenerative load without brake resistor.

Speed fluctuation: Encoder wiring interference, auto-tune not completed.

Keypad no display: Internal auxiliary power supply failure.

Product BriefLenze EVF9330-EV 9300 Vector 45kW closed-loop vector inverter, obsolete drive for packaging, printing and conveying equipment maintenance replacement.