Sensorless EM-A Series Motors from Mitsubishi Electric

Mitsubishi Electric’s EM-A Series PM motors are designed for high performance and energy efficiency. The series includes nine models ranging from 0.1 kW to 7.5 kW, available in 200V and 400V classes.

How It Works

The rotor features a salient-pole core with surface-mounted permanent magnets, causing motor inductance to change with rotational position. The FR-E800 series inverters detect current changes and estimate magnetic pole positions using sensorless vector control.

Sensorless EM-A Series Motors Features:

1. Compact and Energy Efficient:
   • 50-60% smaller in volume and 30-50% lighter than traditional three-phase induction motors.
   • Achieves IE5 efficiency class, consuming less power and reducing CO2 emissions.
2. Global Standards Compliance:
   • Requires no specific regulations or certifications, making them ideal for international use without UL and CE marks compliance.
3. High Performance:
   • Speed fluctuation rate of ±0.05% and maximum torque of 200%.
   • Speed control range from 1 to 1000, with a servo lock function for holding torque.
   • Sensorless control technology provides positioning accuracy of 200p/rev without a pulse encoder

Sensorless EM-A Series Motors Benefits:

1. Cost-Effective Alternative to Servos:
   • Precise speed and positioning control without additional encoders or sensors.
2. Space and Efficiency:
   • Smaller than standard induction motors, increasing system efficiency and reducing footprint.
3. Simplified Integration:
   • FR-E800 series VFD with built-in PLC functions enables easy point-to-point positioning control, reducing wiring and improving reliability.

Sensorless EM-A Series Motors Applications:

Ideal for applications requiring precise speed and position control, the EM-A Series motors, paired with the FR-E800 series inverter, offer a competitive alternative to traditional servo systems with a lower total cost of ownership (TCO).

Conclusion:

Mitsubishi Electric’s EM-A Series PM motors are a significant advancement in motor technology, offering compact size, energy efficiency, and high performance. With global standards compliance and innovative sensorless control technology, these motors provide a versatile solution for various industrial applications.

Talk to one of our automation experts today at (855) 737-4716 or fill out our online form to learn more.