EM-A Series Sensorless Servo PM Motor

A solution for challenges of modern motion applications

• Need to improve energy savings, but want to avoid workload of design changes

  

  Meets IE5 standards with proprietary technology reduces size with the same power

• Don’t need the multifunction of a servo motor, but want higher precision than an inverter

  

  Positioning and speed control comparable to that of servo motors without a sensor

• Complying with different countries’ efficiency regulations is a hassle

  

  Magnetic motors do not require high-efficiency certification in most markets^*1
  and complies with international safety standards

• *1：China: GB 30253-2024 is applicable, but EM-AM is compliant with certain specifications. (EM-AH is not subject as it has a gearbox.)

Mitsubishi Electric's exclusive salient-pole core helps save energy and improve efficiency

Energy-saving/compact
(efficiency class IE5)

High-performance
(speed control/positioning)

Global compatibility
(not subject to high efficiency regulations)

Stable supply
(rare-earth-free)

Sensorless Servo Global PM Motor
EM-A Series

Energy Saving / Compact

Through Mitsubishi Electric’s unique salient-pole core and optimized magnet design, motor volume has been reduced by up to 50% compared to conventional induction motors (IM), allowing significant downsizing of equipment. Additionally, the high-efficiency PM motor reduces power consumption, supporting energy savings and carbon neutrality at workplaces without the workload for design changes.

High Performance

Using Mitsubishi Electric’s unique salient-pole core and control technology, the motor performs high-precision speed control and positioning without an encoder. The sensorless design reduces wiring time and minimizes failure risk while allowing dual benefits of improved conveyor line cycle times and enhanced equipment value at low cost. It can also be driven by a general-purpose VFD from Mitsubishi Electric.

• Speed variation:

  ±0.05%

  (When using digital input)

• Maximum torque:

  200%

• Positioning accuracy:

  200p/rev

• Can be driven with

  a general-purpose

  VFD from Mitsubishi Electric

  (FR-A800/E800/D800 series)

Global Compatibility

The EM-A Series features a magnetic motor that is not subject to international high efficiency regulations. This significantly reduces the time and effort required for compliance checks and certification in each export market. Overseas safety standard certifications (UL/cUL/CE) have also been acquired, providing strong support for smooth global deployment through standardized specifications and value-added manufacturing for the world.

• High-efficiency certification

  not required^*1

  in other countries

• Overseas safety standards

  acquired^*2

  (UL/cUL, CE)

• *1：China: GB 30253-2024 is applicable, but EM-AM is compliant with certain specifications. (EM-AH is not subject as it has a gearbox.)
• *2：Certifications apply to specially modified models.

Helps improve operational efficiency in various applications

This series goes beyond conveyor lines to demonstrate true value across a wide range of industrial applications. In environments such as clean rooms, where dust and oil must be avoided, the design’s elimination of cooling fans and sensors prevents those common sources of failure, directly improving reliability. For pumps and blowers, it provides energy savings while delivering the stable, high-torque performance at low speeds demanded by polishing machines, all with a single general-purpose VFD for a smart configuration.

• Clean rooms

  Fanless design reduces dust generation

  

• Pumps

  Provides torque at low speeds and high-precision speed control

  

• Polishers

  Max. rotation 4,000r/min Stable operation that is unaffected by load fluctuations

  

See here for details about the EM-A Series motor
that enables energy saving and greater precision for conveyor lines