Siemens SINAMICS S 1PH7, Configuration Manual

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Appendix
A.1 Description of terms
1PH7 induction motors (Machine tools)
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Configuration Manual, (APH7W), 04/2009, 6SN1197-0AD72-0BP0
Modes
The operating modes (duty types) are defined in IEC 60034, Part 1. The maximum duty
cycle duration for duty types S1 and S6 is 10 minutes unless otherwise specified.
NDE
Non-drive end
No-load current I
μ
This is the current (rms phase current) that is required in order to operate the motor under
no-load conditions at rated speed without load torque. The no-load current defines the motor
magnetization in the base speed range (low speed at the start of field weakening).
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
N
, n
N
, etc.).
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
N
, n
N
, etc.) are defined.
The rated voltage definition takes into account magnetic (iron saturation) and thermal factors.