EVF9330-EV Lenze 9300-Series 45.0 kW Vector Frequency Inverter

Product Overview

The EVF9330-EV (EVF9330-EV) is a high-capacity vector-controlled frequency inverter from the Lenze 9300-Series, engineered to provide superior dynamic response and precise speed regulation for high-power industrial motors. Delivering a substantial 45.0 kW of rated power, this drive is a cornerstone for heavy-duty applications such as large-scale extrusion lines, industrial centrifugal fans, and high-torque pumping stations. As a specialized "EV" variant designed without integrated interference suppression measures, it is optimized for installation in systems that utilize centralized cabinet-level EMC filtering, allowing for a streamlined internal architecture and high reliability. Despite reaching its official phase-out in 2017, the EVF9330-EV remains an essential solution for maintenance and expansion of existing 9300-Series networks in demanding sectors like mining, chemical processing, and metal manufacturing, where robust power delivery and German-engineered durability are paramount.

Technical Configuration

The EVF9330-EV architecture is designed for a 3-phase mains connection of 400 to 480 V, making it versatile for global industrial power standards. The hardware is housed in a ruggedized chassis with dimensions of 59.10 x 34.00 x 28.50 cm and a weight of 36.50 kg, reflecting its heavy-duty power electronics and thermal management system. It supports advanced sensorless vector control, providing exceptional torque linearity even at very low speeds. The unit is equipped with a modular interface slot for fieldbus expansion (supporting PROFIBUS, CANopen, or DeviceNet) and integrated system bus (CAN) for multi-drive synchronization. Its power stage is built to withstand rigorous load profiles, featuring high overload capacity and comprehensive internal monitoring for phase loss, short circuits, and thermal overload to ensure continuous operation in harsh industrial environments.

Technical Specifications

Technical FAQs

Why is this 45 kW model designed "Without Interference Suppression"?

This configuration is intended for larger systems where an external central mains filter is used for the entire control cabinet. By removing individual internal suppression, the drive reduces heat generation within its own chassis and allows for a more flexible, customized EMC strategy at the system-integration level.

What are the cooling requirements for a drive of this power rating?

The EVF9330-EV generates significant heat during 45.0 kW operation. It requires a vertical mounting position with at least 150 mm of vertical clearance and a high-volume airflow through the cabinet. Ensure the cabinet's heat exchangers or ventilation fans are rated to handle the total dissipation of the drive.

Can I replace this phased-out unit with a newer Lenze series?

While the 9300-Series is phased out, it can often be migrated to the Lenze 9400 HighLine or i550/i950 series. However, due to the 45.0 kW power rating and the specific vector control parameters, a direct mechanical and software compatibility check is required to ensure the motor model and fieldbus communication remain consistent.

Engineering & Installation Guide

For the EVF9330-EV, proper mechanical installation is critical due to its 36.50 kg weight; ensure the mounting backplane is a grounded metal plate capable of supporting this load. Because this model lacks internal EMC filtering, you must use a dedicated external mains filter and shielded motor cables to prevent high-frequency noise from impacting nearby DCS or PLC signals. The motor cable shield should be grounded with 360-degree contact at both the drive's entry point and the motor terminal box. To protect the high-power semiconductors, the use of semi-conductor fuses and a line reactor is highly recommended to mitigate line-side harmonics and transients. During commissioning, ensure the motor's "auto-tuning" procedure is performed under cold conditions to establish an accurate motor model for the vector control algorithm, ensuring maximum torque efficiency and preventing nuisance overcurrent trips.