Are you looking for a motor with the highest level of energy efficiency and a compact design? In that case, the Sew Eurodrive synchronous motors of the DR…J series with LSPM technology might be of interest to you: one motor which covers three efficiency classes. IE2, IE3 and IE4.
The energy-efficient motor concept
The Line Start Permanent Magnet (LSPM) motor is an AC asynchronous motor which contains additional permanent magnets in the rotor with a squirrel cage. After an asynchronous start, the motor synchronizes with the operating frequency and runs in synchronous mode. A motor technology which opens up new, flexible possible applications for you in drive technology.
The synchronous motors do not show any rotor losses in operation.They have an impressive degree of efficiency while maintaining a very compact design. In the same efficiency class, a DR..J motor with LSPM technology is two frame sizes smaller than a standard motor of the same power rating.
Comparison example:
A standard DRE.. motor with 1.1 kW power rating of size 90 M meets the requirements of energy efficiency class IE2. By contrast, thanks to LSMP technology, you now use “only” one DRE..J of the smaller size 80S for IE2. Efficient and profitable!
With Sew Eurodrive synchronous motors of the DR…J series (LSPM technology), we, as a motor manufacturer, have succeeded in combining the advantages of the durable and robust asynchronous motor with those of the low-loss, compact synchronous motor. For greater efficiency in your applications.
DR…J variant Sew Eurodrive synchronous motors (LSPM technology)
DR…J motors meet the requirements for efficiency classes IE2 to IE4
Line start permanent magnet motor
Designed for operation on simple inverters with V/f control
No rotor losses occur in operation
Nine sizes in total (71S to 100L)
Compact and robust design, low-maintenance
Synchronous running of the motors with operating frequency
Slip-free speed control without encoder feedback
Group drive of several motors with synchronous speed on a frequency inverter
Proven combination with MOVIMOT, the gearmotor with integrated frequency inverter
High speed setting range with constant torque without forced cooling fan
