Siemens SINAMICS S120 1PM6 Configuration Manual page 92

Appendix
A.1 Description of terms
Rated current I
N
This is the the current (rms phase value) that flows at the rated speed and rated torque and
can be thermally provided according to the specified operating mode (duty type) according to
IEC 60034-1.
Rated frequency f
N
Frequency required to obtain the performance ratings (P
Rated power P
N
The rated power is the power that is mechanically available at the shaft that can be thermally
provided corresponding to the specified operating mode (duty type) according to
IEC 60034-1.
Rated speed n
N
This is the speed for which the rated power and the rated torque are defined corresponding
to the specified operating mode (duty type) according to IEC 60034-1.
Rated torque M
N
The rated torque is the torque that is mechanically available at the shaft that can be
thermally provided corresponding to the specified operating mode (duty type) according to
IEC 60034-1.
Rated voltage V
N
Voltage between two motor phases for which the rating data (P
rated voltage definition takes into account magnetic (iron saturation) and thermal factors.
S1 duty (continuous operation)
Operation with a constant load, the duration of which is sufficient that the motor goes into a
thermal steady-state condition.
S6 duty (intermittent operation)
S6 duty is operation which comprises a sequence of identical duty cycles; each of these duty
cycles comprises a time with constant motor load and a no-load time. Unless otherwise
specified, the load period refers to a duty cycle of 10 min.
S6-40 % =
S6-60 % =
92
4 min load operation, 6 min no-load operation
6 min load operation, 4 min no-load operation
, n , etc.).
N N
, n
N
1PM6/1PM4 Hollow-Shaft Motors for Main Spindle Drives
Configuration Manual, PPMS, 04/2008, 6SN1197-0AD23-0BP0
, etc.) are defined. The
N