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11 Drive Dimensioning
11.2 Motor selection
316
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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11.2.5 M-n characteristic
The M-n characteristic indicates the torque to be reached with the selected inverter an the thermal
state of the motor.
[11-2] M-n characteristic of the motor
Description
Limit characteristic
• For most motor-inverter combinations characteristic curves are stored in the DSD.
• If no limit characteristic curve is saved, an equivalent characteristic is shown. It is represented as a red
dotted line ( ).
Maximum operating point
Continuous rated curve
• Limit characteristic curve for the torque which the motor can provide continuously (S1 operation) with-
out overheating.
Rated point of the motor
Torque-speed characteristic of the application requirement
For checking the motor-inverter combination the characteristic always has to be below the characteristic
curve.
Rated motor speed
Performance features
• The performance features can also be found in the selection table. Selection table
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