1FT2 synchronous motors for SINAMICS S120
Configuration Manual, 03/2021, A5E50645584B AA
135
Rated torque MN
Thermally permissible continuous torque in S1 duty at the rated motor speed.
Rated speed nN
The characteristic speed range for the motor is defined in the speed-torque diagram by the
rated speed.
Rated current IN
RMS motor phase current for generating the particular rated torque. Specification of the RMS
value of a sinusoidal current.
DE
Drive end = Drive end of the motor
Maximum torque Mmax
Torque that is generated at the maximum permissible current. The maximum torque is briefly
available for high-speed operations (dynamic response to quickly changing loads).
The maximum torque is limited by the closed-loop control parameters.
Maximum current Imax
This current limit is only determined by the magnetic circuit. Even if this is briefly exceeded, it
can result in an irreversible de-magnetization of the magnetic material. Specification of the
RMS value of a sinusoidal current.
Maximum speed nmax
The maximum mechanically permissible operating speed nmax is the lesser of the maximum
mechanically permissible speed and the maximum permissible speed at the converter.
Maximum permissible speed (at converter) nmax Inv
The maximum permissible operating speed for operation at a converter is nmax Inv (e.g. limited
by withstand voltage, maximum frequency).
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