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Siemens SINAMICS S120 Configuration Manual Page 46

Synchronous motors.
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Electrical data
4.3 Field weakening mode
When a smaller converter is used, the characteristics specified for field weakening operation
cannot be achieved.
Speed limit n
max Inv
Caution
When the machine is running (with shaft operated by motor or separately driven) at speeds
higher than n
be induced in the winding. This can cause irreparable damage to the converter.
Caution
The motor must not be operated at speeds higher than
measures are implemented. Siemens AG will not accept liability for any type of damage
resulting from this particular cause.
46
, a voltage in excess of the maximum permissible converter voltage might
max Inv
Configuration Manual, (PFK7S), Edition 12.2006, 6SN1197-0AD16-0BP1
unless additional protective
max Inv
Synchronous Motors 1FK7

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