Product Overview

The EVF9326-EVV004 (EVF9326-EVV004) is a high-performance vector-controlled frequency inverter from the Lenze 9300-Series, designed to provide superior motor regulation and dynamic response for 3-phase asynchronous motors. Delivering a rated power of 11.0 kW, this drive is a workhorse for medium-to-heavy industrial applications such as high-torque mixers, industrial pump arrays, and synchronized conveyor systems. This "EVV" variant is specifically configured without integrated interference suppression measures, making it the ideal choice for installation in control cabinets that utilize a centralized, system-wide EMC filtration strategy. By removing individual internal suppression, the EVF9326-EVV004 offers a streamlined internal architecture that excels in thermal efficiency and reliability. Despite its phase-out status, this German-engineered inverter remains a critical component for businesses maintaining high-availability legacy systems that demand precise frequency control and robust power delivery.

Technical Configuration

The EVF9326-EVV004 architecture is designed for a 3-phase mains connection of 400 to 480 V, providing versatility for global industrial power standards. It utilizes advanced sensorless vector control to maintain exceptional torque linearity across a wide speed range, even under fluctuating load conditions. The hardware is housed in a robust, compact chassis (13.50 cm wide), optimized for high-density vertical mounting in industrial control cabinets. It supports various modular expansion options for fieldbus communication—including PROFIBUS, INTERBUS, and CANopen—allowing it to function as a highly communicative node within a larger PLC or DCS environment. The power stage is engineered for a high overload capacity, ensuring stable operation during the aggressive acceleration phases required by modern automated production lines.

Technical Specifications

Technical FAQs

What are the specific advantages of the 11.0 kW "Without Interference Suppression" model?

This model is designed for systems where an external central filter handles EMC for multiple drives. It reduces the drive’s internal heat signature and simplifies the internal electrical path, which can lead to increased component longevity in high-duty cycle applications.

Can the EVF9326-EVV004 handle variable torque and constant torque loads?

Yes. Through its programmable V/f characteristics and vector control modes, the drive can be optimized for constant torque applications (like conveyors and extruders) or quadratic variable torque loads (like centrifugal fans and pumps), ensuring maximum energy efficiency.

How do I manage parameters during a field replacement of this unit?

The 9300-Series supports parameter transfer via the EMZ9371BC keypad module or through a PC link using Lenze Global Drive Control (GDC) software. It is highly recommended to save the parameter set of the existing drive before replacement to ensure the new 11.0 kW unit matches the specific load profile of your machine.

Engineering & Installation Guide

For the EVF9326-EVV004, a vertical mounting orientation is mandatory to ensure the internal cooling fan can effectively move air through the 11.0 kW power stage. Maintain a minimum clearance of 100 mm above and below the unit for unobstructed airflow. Because this specific model does not have internal suppression, you must use shielded motor cables and ensure the shield is grounded with a 360-degree clamp at the drive's EMC plate. To protect the inverter's power semiconductors from mains transients, the use of a line reactor is highly recommended. During commissioning, ensure that the motor’s nameplate data is accurately entered into the drive's memory; this allows the vector control algorithm to establish a precise mathematical model of the motor, which is essential for achieving the rated 11.0 kW performance without nuisance tripping.