Glossary - Siemens SIMOTICS S-1FK2 Configuration Manual

Glossary

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 defined in the speed-torque diagram by the rated
speed.
Rated current I
N
RMS motor phase current for generating the particular rated torque. Specification of the RMS
value of a sinusoidal current.
Rated converter current I
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
Braking torque M
br eff
M
br eff
achieved through the upstream braking resistor R
Braking resistance R
R corresponds to the optimum resistance value per phase that is switched in series external to
opt
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
Configuration Manual, 02/2022, A5E46927724B AD
N conv
.
0 (100K)
corresponds to the average braking torque for armature short-circuit braking that is
opt
.
opt
10
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