Product Overview

The EVS9326-EIV904 (EVS9326EIV904) is a high-performance 11.0 kW Servo PLC designed to provide decentralized intelligence within the Lenze 9300-Series ecosystem. Combining the precision of a high-end servo inverter with the logical processing power of an integrated PLC, this unit is capable of executing complex motion control sequences—such as synchronized multi-axis positioning and electronic gearing—independent of a master controller. In sectors like high-speed automated assembly, CNC machining, and advanced packaging, the EVS9326-EIV904 serves as the primary driver for responsiveness and deterministic timing. Though it belongs to a field-proven phase-out series, its German-engineered reliability and IP20 protection rating make it a vital asset for maintaining mission-critical legacy systems while ensuring optimal operational efficiency.

Suffix Breakdown

The model designation EVS9326-EIV904 conveys specific hardware and functional parameters:

• EVS9326: Represents the 9300-series power stage with an 11.0 kW rating.

• EI: Identifies the "Servo PLC" functional variant, supporting IEC 61131-3 programming logic.

• V904: Indicates a specific internal hardware or firmware revision, often including specialized coatings for enhanced environmental durability or optimized communication protocols for the V9xx sub-series.

Technical Specifications

Technical FAQs

How does the "EI" variant differ from the "EK" cam profiler?

The "EI" (Servo PLC) provides a freely programmable logic environment based on IEC 61131-3, allowing for custom machine logic. The "EK" variant is specifically optimized for electronic cam functions. The Servo PLC offers greater versatility for unique machine sequences that go beyond standard cam profiles.

Is it possible to use this drive with different fieldbus systems?

Yes. The 9300-Series features a modular interface slot. By swapping the AIF (Application Interface) module, the EVS9326-EIV904 can communicate via PROFIBUS, INTERBUS, DeviceNet, or CANopen, making it highly adaptable to various network architectures.

What are the cooling requirements for the 11.0 kW power stage?

This unit utilizes forced-air cooling via internal fans. It must be mounted vertically with sufficient clearance to allow air to circulate through the heatsink fins. If mounted in a sealed cabinet, active heat extraction is required to keep the ambient temperature below 45 Celsius.

Engineering & Installation Guide

• Integrated PLC Logic Grounding: Because this unit functions as a PLC, sensitive I/O signals are present. To prevent "ghost" triggers or logic errors caused by high-frequency noise from the inverter's power stage, use twisted-pair shielded cables for all control wiring. The shield should be grounded as close to the drive as possible using an EMC shield clip.

• DC Bus Safety Protocols: The EVS9326-EIV904 contains high-capacity capacitors. After disconnecting the power supply, wait at least 5 minutes before touching terminals. Always verify the voltage across the +UG and -UG (DC bus) terminals with a meter to ensure it has dropped below 50 VDC before performing any maintenance.

• Heat Dissipation Management: Ensure a minimum vertical clearance of 100 mm above and below the unit. In multi-axis configurations, avoid "thermal stacking" where the hot exhaust of one drive is pulled into the intake of another; use a staggered layout or high-volume cabinet fans if necessary.