Mitsubishi Electric is a global leader in the development and production of inverter drives. The new A800 Series inverter drive launched in 2104 offers real sensorless vector control and vector control for a wide range of high performance machinery types.  It uses a new state-of-the-art high-speed processor developed by Mitsubishi for accurate and reliable control, response, and safe operation.

The production of high quality products and machines requires high levels of accuracy delivered by the A800.  A800 is designed for a wide range of applications from materials handling to semi-conductor fabrication, and including:

– In line control such as the processing of paper, yarn, wire and sheet materials rapid changes in line speed and response are required to ensure even cutting and winding to produce high quality products and finish

– High-speed machine tool control and the ultra-fine processing needed for cutting, grinding and polishing hard new materials to finer tolerances and producing mirror-like finishes.

– Material handling requires cranes to smoothly and swiftly move heavy weights, and work at low speed and high torque for the slow and stable movements required for heavy objects.

– Positioning control to transport and deliver precision work-pieces such as a fragile glass substrate, to a precise position.

Energy saving with PM motors

The FR-A800 series enables factory energy savings, which can be achieved by replacing current induction motors with permanent magnet motors (PM motors). A PM motor is very efficient because the current does not flow to the rotor, so there is no secondary copper loss. There is also magnetic flux generated by permanent magnets, so less current is required to drive a motor.

What is a permanent magnet (PM) motor?

A PM motor is a synchronous motor with strong permanent magnets embedded in its rotor. The two major PM motor types are: the interior permanent magnet (IPM) motor with its magnets embedded inside the rotor, and the surface permanent magnet (SPM) motor with its permanent magnets attached on the rotor surface.

What is PM sensorless vector control?

The speed and magnetic pole positions, the two essential bits of information to control a PM motor, are detected without a sensor (encoder). The speed detection internally-performed in an inverter enables highly accurate control of a PM motor, almost as accurate as an AC servo system, without the need of a sensor (encoder).

A full range of Mitsubishi inverters at discounted prices here