Motor Description
Cooling
1FT6 Synchronous Motors
1-24 Configuration Manual, (PFT6), 10.2005 Edition, 6SN1197-0AD02-0BP1
1.6.3 Water cooling
The power loss generated by the motor is dissipated using a water cooling system. The
machinery construction company must connect up a cooling system (e.g. heat exchanger).
The rated motor torques, specified in the motor data sheets, apply for water-cooled operation
and a water intake temperature of < 30 °C.
The cooling medium must be pre-cleaned and filtered in order to prevent the cooling circuit
from becoming blocked. The maximum permissible particle size after filtering is 100 µm.
Cooling circuit
Pressure drop, intake/return: < 0.1 bar
Notice
If the motor is operated without water cooling, then the rated motor torque is reduced as a
function of the heat losses which can be dissipated by convection and radiation. In this case,
the data for naturally cooled operation apply.
Note
It is not possible to retrofit a motor for water cooling.
Notice
If current is flowing through the motor, then the cooling circuit must be activated.
Table 1-8 Technical data for the cooling circuit
Motor type
Water flow rate
[l]
Max. permissible
pressure
[bar]
Flow rate
[l/min]
1FT6062 0.2 2.5 5
1FT6064 0.26 2.5 5
1FT6084 0.5 2.5 5
1FT6086 0.6 2.5 5
1FT6105 1.1 2.5 5
1FT6108 1.5 2.5 5
1FT6132 2.1 6.0 8
1FT6134 2.4 6.0 8
1FT6136 2.7 6.0 8
1FT6138 3.1 6.0 8
1FT6163 4.7 6.0 10
1FT6168 5.7 6.0 10
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