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AC Motor DR...J (LSPM Technology)

  • Features of line start permanent magnet motors
    • The synchronous motor type DR…J (LSPM technology) is integrated in the modular DR.. motor system and is available in sizes 71S to 100L. The technology is based on permanent magnets under the short-circuit cage of the asynchronous AC motor.
    • One motor – three variants – three energy efficiency classes: DR…J motors are available in the energy-efficient variants DRE..J (IE2), DRP..J (IE3), and in DRU..J (IE4) with LSPM technology.
    • Identification by a "J" following the length designation.
    • Compared to servomotors with the same power rating, the same energy efficiency class is achieved with smaller DR…J (LSPM technology) motors.
    • Compact and robust design.
    • Synchronous operation of the motors with supply frequency.
    • Slip-free speed control without encoder feedback.
    • No rotor losses occur during operation:
      • High degree of efficiency from IE2 up to IE4
      • Compact design compared to standard asynchronous motors
    • DR…J LSPM motors can be operated on the power grid or on the frequency inverters MOVITRAC® LTP-B, MOVITRAC® B, MOVIFIT® FC, and MOVIMOT.® .
    • Can be used as individual drive or as group drive with a frequency inverter.
    • Many additional features of the modular DR.. motor system are available.
    • Can be combined with the modular system of 7-series gear units from SEW‑EURODRIVE.
    • Constant torque in the speed setting range (CT) without forced cooling fan.

Technical data

Line operation / 50 Hz
Nominal speed: 1500 rpm
Series Energy efficiency class Size Power PN [kW]
DRU..J IE4 71S ... 100L 0.18 ... 3.0
DRP..J IE3 71S ... 100L 0.37 ... 4.0
DRE..J IE2 71S ... 100M 0.37 ... 4.0
FI operation / 50 Hz
Constant torque from 300 to 1500 rpm [CT 1:5]
Series Energy efficiency class Size Power PN [kW]
DRU..J IE4 71S ... 100L 0.18 ... 3.0
DRP..J IE3 71S ... 100L 0.37 ... 4.0
DRE..J IE2 71S ... 100M 0.37 ... 4.0
FI operation / 87 Hz
Constant torque from 300 to 2610 rpm. [CT 1:8.7]
Series Energy efficiency class Size Power PN [kW]
DRU..J IE4 71S ... 100L 0.25 ... 4.0
DRP..J 1 71S ... 100L 0.55 ... 5.5
DRE..J 1 71S ... 100M 0.55 ... 5.5