Glossary
10
Rated torque M
N
Thermally permissible continuous torque in S1 duty at the rated motor speed.
Rated speed n
N
The characteristic speed range for the motor is dened in the speed-torque diagram by the rated
speed.
Rated current I
N
RMS motor phase current for generating the particular rated torque. Specication of the RMS
value of a sinusoidal current.
Rated converter current I
N conv
RMS converter output current (per phase) that can be supplied on a continuing basis by the
recommended Motor Module The recommended Motor Module is determined with the stall
current I
0 (100K)
.
Braking torque M
br e
M
br e
corresponds to the average braking torque for armature short-circuit braking that is
achieved through the upstream braking resistor R
opt
.
Braking resistance R
opt
R
opt
corresponds to the optimum resistance value per phase that is switched in series external to
the motor winding for the armature short-circuit braking function.
DE
Drive end = Drive end of the motor
Cyclic inductance L
D
The cyclic inductance is the sum of the air gap inductance and leakage inductance relative to the
single-strand equivalent circuit diagram. It consists of the self-inductance of a phase and the
coupled inductance to other phases.
1FK2 Synchronous Motors for SINAMICS S120
Conguration Manual, 02/2022, A5E46927724B AD 157
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