Siemens S120 Overview of the motor construction, Motor components, Motors with a cooling jacket

Motor components of the built-in motor and options 3

3.1Overview of the motor construction

Motor components

The built-in torque motor contains the following components:

●Stator:

this comprises an iron core and a 3-phase winding.

The winding is encapsulated to ensure that the heat loss can be dissipated more effectively. The motor is designed for water cooling (main cooler). The cooler has a different design for each of the different sizes (external diameter).

●Rotor:

this is the reaction part of the motor. It comprises a cylindrical hollow steel shaft with permanent magnets around its circumference.

●Cooling connection adapter (optional):

this can be ordered for motors with integrated cooling whereby the main and precision cooler are operated in parallel on one heat-exchanger unit.

Motors with a cooling jacket

The cooling jacket surface of the motor contains circular grooves which, in conjunction with a surrounding construction provided by the machine manufacturer, create a closed liquid cooling circuit.

The coolant inlet/return flow circuit must be provided by the machine manufacturer in the surrounding construction.

1FW6 Built-in torque motors	41
Configuration Manual, 05/2009, 6SN1197-0AE00-0BP3