SIEMOSYN Motors 1FU8 SINAMICS SIMOVERT MASTERDRIVES ...

Motor Description
1.1 Applications and features
Advantages
� The motors do not require a speed encoder. This means that a speed encoder
feedback is not required and therefore fewer components, installation, mounting
and cabling costs
� The speed accuracy of single-motor and group drives is directly proportional to
the frequency of the line supply or the drive converter
� In group drives, the motors run in synchronism without requiring any other electronic
equipment
� The motors have intrinsically low rotor and excitation losses. This means that
they have a higher efficiency than other motors thus reducing operating and
energy costs
� Constant torque over a defined frequency range
� The speed is independent of the load over the frequency range
� Electrical braking – a holding torque can be provided at standstill with DC
� The motor has been designed so that it cannot be de-magnetized
� High degree of protection
Applications
1FU8 motors provide a high speed stability and synchronous operation even if several
motors are used in a group (group drive).
1FU8/1-14
These 1FU8 motors are suitable for applications where speeds are required independent
of the load or synchronous operation. They are also admirably suited
where defined speed ratios have to be maintained over a wide frequency range –
both as single-motor and group drives. These include, for example:
� Man-made fiber industry (spinning pumps, godets, driving rolls)
� Texturing systems (stretching godets)
� Rolling mills (roller table motors)
� Transport systems (conveyor belts)
� Glass industry (conveyor belts)
09.03
© Siemens AG, 2003. All rights reserved
SIEMOSYN Motors, 1FU8 (PFU) – 09.03 Edition