Siemens Micromaster 440 or MM440 Drive – Find comprehensive resources for Siemens Micromaster 440 or MM440 Drive, including product catalogs, manuals, price list, programming guides, fault, alarm, warnings & software support. Get expert assistance for troubleshooting and optimization.

Siemens Micromaster 440 drive is a popular and versatile AC drive (frequency inverter) used in a wide range of industrial applications. It’s suitable for various applications, including pumps, fans, conveyors, and general machinery.
Power rating: 0.12 kW to 250 kW
Features
Siemens Micromaster 440 drive comes with advanced vector control (with and without encoder feedback) for versatile applications in sectors such as conveying systems, textiles, elevators, hoisting equipment and machine construction.
- Variable Speed Control: The Micromaster 440 allows for precise control of the speed of three-phase AC motors, improving process efficiency and energy savings.
- Wide Application Range: It’s suitable for various applications, including pumps, fans, conveyors, and general machinery.
- User-Friendly Operation: Designed with features like easy start-up procedures and a modular construction for flexibility.
- Robust Design: Employs IGBT (Insulated Gate Bipolar Transistor) technology for reliable performance.
- Integrated Functions: Includes features like a PID controller for process control, and motor and inverter protection functions.
Specifications
Power ranges | 0.12 kW to 250 kW |
Voltage ranges | 1 AC 200 V to 240 V 3 AC 200 V to 240 V 3 AC 380 V to 480 V 3 AC 500 V to 600 V |
Control methods | V/f characteristic Multipoint characteristic (programmable V/f characteristic) FCC (flux current control) Vector control |
Process control | Internal PID controller (autotuning) |
Inputs | 6 digital inputs 2 analog inputs 1 PTC/KTY input |
Outputs | 2 analog outputs 3 relay outputs |
Interfacing to automation system | The ideal partner for your automation tasks, whether with SIMATIC S7-200, SIMATIC S7-300/400 (TIA) or SIMOTION |
Additional features | 3 selectable drive data kits Integrated brake chopper (up to 75 kW) Torque control BICO technology |
Applications
Siemens Micromaster 440 drive, with its versatile variable speed control, found application in a broad spectrum of industrial settings. Here are some of the key areas where it was commonly used:
- Pumps and Fans: A very common application. The Micromaster 440 was used to control the speed of pumps and fans, allowing for energy savings by adjusting flow rates to match demand. This is very common in HVAC systems.
- Conveyor Systems: It was used to regulate the speed of conveyors in material handling applications, ensuring smooth and controlled movement of goods.
- Material Processing: Applications in industries like textiles, paper, and plastics, where precise speed control is essential for processing materials.
- Machine Tools: It could be found in some machine tool applications, providing variable speed control for spindles and other moving parts.
- General Machinery: The drive’s versatility made it suitable for a wide range of general-purpose machinery that required variable speed control.
- Mixers and Agitators: In chemical and food processing.