E82EV251_2C Lenze 8200 Vector 0.25 kW Variable Frequency Drive

Product Overview

The E82EV251_2C (E82EV251K2C) is a high-precision vector frequency inverter from the established Lenze 8200-series, engineered for the efficient control of small-scale asynchronous motors. Delivering a rated power of 0.25 kW (0.34 HP), this drive is optimized for single-phase 230/240 V mains connections, making it an essential component for decentralized automation tasks such as small conveyor belts, dosing pumps, and laboratory equipment. The E82EV251_2C excels in maintaining high torque at low speeds through its advanced vector control characteristics, ensuring smooth operation across a broad frequency range of 0 to 650 Hz. Despite its current "Phase-Out" status, this German-manufactured inverter remains a critical replacement part for maintaining legacy production lines where space-saving dimensions (7.60 x 15.20 x 15.20 cm) and long-term reliability are non-negotiable requirements.

Technical Configuration

The hardware architecture of the E82EV251_2C is built for maximum power density and thermal efficiency. It accepts a 1-phase AC input (1/N/PE) and converts it to a 3-phase AC output (3/PE), allowing for the use of standard three-phase motors in environments where only single-phase power is available. The module is housed in a robust, compact enclosure weighing just 0.70 kg, designed specifically for high-density cabinet mounting. It features integrated protection against short circuits, earth faults, and motor overloading. The unit's modular interface allows for the addition of various communication or I/O function modules, providing the flexibility to integrate into basic manual control setups or more complex, bus-controlled automation networks.

Technical Specifications

Technical FAQs

Can the E82EV251_2C be operated with a 50 Hz or 60 Hz input?

Yes, the inverter is designed to handle both 50 Hz and 60 Hz mains frequencies automatically, making it suitable for global industrial applications without the need for hardware modification.

What is the maximum output frequency, and is it suitable for high-speed spindles?

The unit supports an output frequency of up to 650 Hz. While this is high enough for many standard applications, ensure that your motor's bearings and balance are rated for the corresponding RPM before configuring the drive for high-frequency operation.

How do I handle a replacement if the original unit is obsolete?

As this is a "Phase-Out" model, we maintain "Brand New" and "Refurbished" original stock. Since it is a legacy 8200-series component, it is a 1:1 match for existing E82EV251K2C units, requiring only a parameter transfer to restore full machine functionality.

Engineering & Installation Guide

Mounting and Heat Management:

For optimal performance, the E82EV251_2C must be mounted vertically. Although the unit is compact, it still requires adequate airflow. Maintain a minimum vertical clearance of 100 mm above and below the inverter. If the drive is installed in a small, non-ventilated enclosure, monitor the ambient temperature to ensure it does not exceed 45 deg C, as this could trigger an internal thermal fault.

Correct Wiring for Single-Phase Input:

Ensure that the mains input is connected strictly to the 1/N/PE terminals. Never apply three-phase 400 V power to this unit, as it is rated for 230/240 V only. To reduce electromagnetic interference, use shielded motor cables and ensure the shield is bonded to the common ground rail of the cabinet using a metal EMC clamp.

Parameter Backup and Transfer:

Before decommissioning a failing unit, use a Lenze keypad module (such as the E82ZAF) to copy the parameter set. This "Standard PT" configuration can then be uploaded to the replacement E82EV251_2C in seconds, ensuring that ramp times, V/f curves, and current limits are identical to the original setup.