Lenze VSD Inverter Motor Speed Control E82EV371K2C

Lenze E82EV371K2C | 8200 Vector Frequency Inverter — 0.37 kW / 230V / 1-Phase In / 3-Phase Out / Vector Control / IP20

0.37 kW Vector Drive — Single-Phase In, Three-Phase Out

The E82EV371K2C is Lenze's 0.37 kW member of the 8200 Vector frequency inverter range — a compact drive that accepts single-phase 230V AC from the mains supply and produces a regulated three-phase output to run a standard three-phase induction motor. This single-to-three-phase conversion is the defining practical advantage for small machine applications where only a single-phase supply is available at the installation point.

Vector control enables speed and torque regulation more accurate than simple V/Hz control. The 8200 Vector implements the motor's flux vector model in real time — it computes the required stator current direction to maximise torque production for the commanded speed. Under variable loads, vector-controlled drives maintain speed closer to the setpoint than V/Hz drives, which is relevant for machine axes, conveyor tension regulation, and processes where load torque varies during the cycle.

The modular architecture of the 8200 Vector is a key design feature. Pluggable function modules — for fieldbus communication (PROFIBUS, DeviceNet, CANopen), encoder feedback, brake chopper, and I/O expansion — install into the front of the drive without wiring changes to the main power or motor circuits. The same E82EV371K2C base unit accommodates different function modules to match different machine automation architectures.

Key Specifications

Parameterisation — Keypad XT and GDC Easy

The drive is preset for standard operation at factory — preset ramp times, preset I/O assignments, and preset protection functions allow many applications to run without software adjustment. For applications requiring custom speed ranges, acceleration profiles, or analogue input configuration, parameters are changed through the plug-in Keypad XT or the free

GDC easy PC software connected via the front serial interface. The Keypad XT also serves as a parameter memory — it stores the complete parameter set and can transfer it to another E82EV371K2C unit in seconds.

FAQ

Q1: Can the E82EV371K2C run a three-phase motor from a single-phase supply?

Yes. The input is single-phase 230V AC; the output is three-phase 0–230V AC. This is one of the most practical applications of this specific inverter — it enables standard three-phase induction motors to run from a single-phase domestic or industrial 230V AC supply where three-phase power is unavailable. The motor's rated current must not exceed the 2.4A output rating.

Q2: What is the difference between V/Hz and Vector control modes?

V/Hz mode maintains a fixed voltage-to-frequency ratio across the output frequency range — straightforward and stable, but the motor speed varies under load. Vector control computes the motor's flux state in real time and adjusts current direction to maximise torque at the commanded speed. Under variable load, vector control maintains speed closer to setpoint and provides better low-speed torque. Select vector mode for conveyor, positioning, and process applications where speed precision matters; V/Hz for simple pump and fan speed regulation where slip at load is acceptable.

Q3: What function modules are compatible with the E82EV371K2C?

The 8200 Vector accepts Lenze's E82Z function module range — covering PROFIBUS DP, CANopen, DeviceNet, and other fieldbus protocols; encoder feedback modules; brake chopper modules; and analogue/digital I/O expansion. Confirm function module compatibility from Lenze's 8200 Vector hardware documentation, as power class and connection type determine which modules fit the E82EV371K2C base unit.

Q4: How is the E82EV371K2C commissioned without the optional Keypad XT?

The drive operates from factory presets without any keypad. For custom parameter adjustment without the keypad, connect a PC via the front serial interface and use the free GDC easy (Global Drive Control easy) software available from Lenze's website. GDC easy provides a graphical interface for all parameters, diagnostics, and fault history — more convenient than keypad navigation for first-time commissioning.

Q5: What does the "K" in E82EV371K2C mean and what suffix variants exist?

The "K" identifies the base module version of the E82EV371 at 230V (voltage class 2). Adjacent suffix variants include "S" (E82EV371S2C) with specific insert options installed. The base E82EV371K2C is the standard module without inserted options; variant suffixes identify specific function module or insert configurations. Confirm the exact suffix from the installed unit's label when ordering a replacement or specifying a spare.