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EM-A Motors Transform Industrial Efficiency

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The Power of 1%: How EM-A Motors Transform Industrial Efficiency

Energy efficiency isn't just an environmental consideration - it's a critical economic factor. With energy prices continuing to rise and sustainability regulations becoming increasingly stringent, manufacturers are seeking solutions that can deliver meaningful reductions in operational expenses and carbon emissions.

The Mitsubishi Electric EM-A motor series represents a significant advancement in motor technology, offering ultra-premium efficiency that exceeds IE5 standards - the highest officially classified efficiency level for electric motors. This innovative solution addresses the pressing challenges of rising energy costs, regulatory compliance, and the need for sustainable manufacturing practices.

Understanding the EM-A Motor

The EM-A is a synchronous permanent magnet (S-PM) motor with a salient pole design that enables high-performance sensorless control. Unlike conventional induction motors, the EM-A utilises a patented salient-pole core structure that allows for both precise speed and position control without requiring encoders or additional sensors.

This motor series is available in power ranges from 0.1kW to 7.5kW, with frame sizes that are typically one to two sizes smaller than comparable induction motors. The compact design, combined with exceptional efficiency, makes the EM-A an ideal solution for material handling systems, including conveyors, stacker cranes, and vertical transport applications.

Key Features That Drive Efficiency and Performance

Sensorless vector control: maintaining stability under any load

The EM-A's advanced sensorless vector control ensures consistent speed stability regardless of load changes. This means improved production quality through superior machine performance, lower production costs by reducing the risk of defective products, and reduced operational costs by avoiding unplanned downtime. Imagine a conveyor belt transporting bottles - when products enter the conveyor, conventional motors might momentarily reduce speed, causing bottles to topple. The EM-A maintains consistent speed, preventing product loss and eliminating the need to stop production lines for clean-up.

Superior power-to-size ratio: compact design with maximum output

The EM-A's synchronous design offers greater overload capacity than traditional asynchronous motors, allowing for precise sizing without overengineering. This means a 0.4kW EM-A motor can often replace a 0.75kW induction motor, providing lower initial investment costs with right-sized motors, space and weight savings in your machinery and production floor, and enhanced energy efficiency by operating closer to optimal conditions.

Servo Lock Function: Precision Positioning Without Mechanical Brakes

The EM-A's servo lock capability maintains position without requiring mechanical brakes, delivering lower investment costs by reducing or eliminating mechanical brake requirements, improved production efficiency through shortened cycle times, reduced maintenance costs by avoiding wear on mechanical components, and enhanced reliability by eliminating wear-prone parts.

Point-to-Point Positioning: Simplified Motion Control

When paired with the FR-E800 drive, the EM-A offers built-in positioning capabilities without requiring a separate PLC, resulting in lower initial investment costs with standalone position control, simplified hardware architecture leading to shorter engineering time, reduced startup costs through easier position programming, and streamlined system design with fewer components.

Compact Design: Maximum Performance in Minimal Space

The EM-A's compact footprint delivers the same power in a significantly smaller package, enabling space optimisation in machinery and on the production floor, reduced machine weight for easier installation and transportation, greater design flexibility for machine builders, and lower material costs in machine construction.

The 1% Principle: Small Differences, Massive Impact

When it comes to motor efficiency, even a single percentage point can make a remarkable difference. Consider this: a standard 2.2kW IE3 motor (the minimum efficiency class currently allowed by the EcoDesign directive) operates at approximately 86% efficiency. By contrast, the EM-A motor achieves over 91% efficiency at the same power rating.

Wanna know the details?

Watch three short videos where Wojciech Bracha - Strategic Product Manager for AC Drives will explain what are the possible savings after EM-A motor implementation and how much money can be saved as a result.

Discover your savings potential

Complete the form below, and we'll help you calculate how much energy and cost you could save by implementing EM-A motors in your facility. Our experts will provide a detailed analysis based on your specific operational parameters and requirements.

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