Electric motor from Danfoss

Danfoss Power Solutions has launched its Editron EM-PMI540B electric motor. Based on synchronous reluctance assisted permanent magnet technology, the EM-PMI540B functions as a motor and a generator and was designed for electric or hybrid drivetrains in applications such as off-highway machinery and marine vessels.

The Editron EM-PMI540B electric motor builds on the efficiency of the EM-PMI540A, offering approximately 96% efficiency throughout its operating range, said the company. It is made with a compact and robust housing that has an ingress protection rating of IP67.

The Editron EM-PMI540B from Danfoss Power Solutions functions as both a motor and a generator. (Photo: Danfoss Power Solutions)

The company said the motor’s continuous power rating is not time bound, meaning it can operate at full power, non-stop, for as long as the duty cycle requires. Its constant availability reportedly increases machine productivity and simplifies usage by eliminating the need for complex drivetrain designs.

Compared to the previous model, the EM-PMI540B features a higher maximum operational altitude of 4,000 meters, which the company explained was made possible by “housing design optimization.”

Other improvements over the EM-PMI540A include more mounting and shaft options — such as a flange mount, various foot mountings, through-shaft, and spline — common housing and end shield designs across each size, and modest changes in motor diameter.

“Our new Editron EM-PMI540B electric motor builds on the popularity and market-leading performance of our PMI540A,” said Fredrik Wigh, senior product manager, electric machines, Danfoss Power Solutions. “To our high efficiency ratings and 24/7 continuous power, we’ve added universal mounting options and a higher altitude rating to meet market demands. These combined features are especially beneficial in mining, harbor material handling, and forestry machinery. But the motors’ high efficiency and smaller size makes them ideal for many other electric and hybrid machines, particularly those operating in demanding, rough environments.”

The EM-PMI540B electric motor is available in four sizes to suit a range of torque and power needs. The T1500, T2000, T3000 and T4000, corresponding to continuous torque ratings of 1,500 up to 4,000 Nm, are now available. The full line of motors has power ranges starting at 119 kW and topping out at 1,000 kW and speed ranges from 0 to 4,000 rpm. The motor is liquid cooled and features low coolant flow requirements with an allowed coolant temperature of up to 65°C.