Lenze ESMD551X2SFA AC Drive

Product Overview

The Lenze ESMD551X2SFA is a Lenze SMD Series AC Drive (Frequency Inverter / Variable Frequency Drive) designed for controlling the speed and torque of three-phase AC motors. It is widely used in general-purpose industrial motor applications such as conveyors, pumps, fans, and automation equipment.

This model is rated at 0.55 kW (0.75 HP) and uses a single-phase 230/240 VAC input with three-phase variable-frequency output for motor speed control.

Main Specifications

• Manufacturer: Lenze / AC Tech
• Model: ESMD551X2SFA
• Series: SMD
• Product Type:
  • AC Drive
  • Variable Frequency Drive (VFD)
  • Frequency Inverter
• Rated Power: 0.55 kW
• Motor Power: 0.75 HP approx.
• Input Voltage: 230/240 VAC
• Input Phase: Single Phase
• Output Voltage: 3-phase 0–230 VAC
• Output Current: Approx. 3 A
• Frequency Range: 0–240 Hz / up to 500 Hz depending on configuration
• Protection Rating: IP20

Technical Functions

The ESMD551X2SFA provides:

• Variable speed control for AC motors
• Adjustable acceleration and deceleration
• Motor overload protection
• Frequency adjustment
• Torque control
• Analog and digital control inputs

Working principle:

AC Power Input → Inverter Conversion → Variable Frequency Output → AC Motor Speed Regulation

Control Features

• V/f (Voltage/Frequency) control
• Adjustable speed reference
• Digital start/stop control
• Analog speed command input
• Programmable control terminals
• Built-in parameter memory (EPM)

Features & Advantages

• Original Lenze SMD series inverter
• Compact and lightweight design
• Easy commissioning and parameter setup
• Suitable for general industrial motor applications
• Reliable motor protection functions
• Supports quick replacement and retrofit projects
• Efficient motor speed regulation

Applications

Used in:

• Factory automation equipment
• Conveyor systems
• Packaging machinery
• Fans and pumps
• Material handling equipment
• Small industrial machines

Typical applications:

• Motor speed adjustment
• Machine cycle control
• Energy-saving motor operation
• Automation system drive control