SIEMENS 6SE6440-2AD31-1CA1 MICROMASTER 440 AC Frequency Inverter

Overview

The SIEMENS 6SE6440-2AD31-1CA1 is a MICROMASTER 440 series AC frequency inverter from Siemens, fitted with built-in Class A EMC filter. The SIEMENS 6SE6440-2AD31-1CA1 delivers 11 kW constant torque rating and 15 kW square-law torque rating for three-phase AC motor speed regulation. It supports V/F control and vector control for stable drive performance on diverse industrial loads. The SIEMENS 6SE6440-2AD31-1CA1 is widely used for legacy automation equipment and is commonly stocked as spare part for maintenance and retrofit.

Features

The SIEMENS 6SE6440-2AD31-1CA1 integrates built-in Class A EMC filter to reduce electromagnetic interference. It provides strong overload capacity: 150% overload for 60 seconds and 200% overload for 3 seconds. The SIEMENS 6SE6440-2AD31-1CA1 offers rich protection functions including overcurrent, overvoltage, undervoltage and overtemperature protection. It supports configurable analog and digital I/O plus standard serial communication for PLC connection. The SIEMENS 6SE6440-2AD31-1CA1 adopts IP20 enclosure and fan cooling for cabinet installation.

Specs

Device Type: MICROMASTER 440 AC frequency inverter Model: SIEMENS 6SE6440-2AD31-1CA1Input: 3AC 380–480 V, 47–63 Hz Power Rating: 11 kW (constant torque), 15 kW (variable torque) EMC Filter: Built-in Class A filter Control Mode: V/F control, vector control Protection Class: IP20 Cooling: Fan cooling Ambient Temperature: -10 ℃ ~ +50 ℃ Dimension: 245 × 185 × 195 mm

Principle

The SIEMENS 6SE6440-2AD31-1CA1 converts three-phase AC input into DC power through internal rectifier. The IGBT inverter module converts DC power into adjustable frequency and adjustable voltage AC power to drive the motor. The control core samples voltage and current signals continuously and adjusts output waveform according to speed command. When abnormal operating conditions are detected, the SIEMENS 6SE6440-2AD31-1CA1 triggers protection and records fault codes.

Applications

The SIEMENS 6SE6440-2AD31-1CA1 is used for speed regulation of fans, pumps and conveyor systems. It serves motor drive control for packaging machinery, textile machines and material handling equipment. The SIEMENS 6SE6440-2AD31-1CA1 applies to spare replacement and renovation of existing MICROMASTER 440 drive systems. It also supports energy-saving transformation for HVAC and water treatment facilities.