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Motor Description
1.7 Cooling
1.7.2
Water-cooling
The power loss generated by the motor is dissipated using the water cooling. The
machinery construction company must connect-up a cooling system (e.g. heat
exchanger).
The motor rated torques, specified in the data sheets apply for water-cooled
operational and a water intake temperature of < 30 °C
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 non-ventilated operations apply.
Note
It is not possible to retrofit water cooling.
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 100 µm.
Cooling circuit
Notice
If current is flowing through the motor, then the cooling circuit must be activated.
Table 1-14
Motor type
1FT6138
1FT6163
1FT6168
Pressure drop, intake/return:
1FT6/1-34
Technical data for the cooling circuit
Water flow rate [l]
0.2
0.26
0.4
0.5
0.6
1.1
1.5
2.1
2.4
2.7
3.1
4.7
5.7
< 0.1 bar
.
Max. permissible
pressure [bar]
2.5
2.5
2.5
2.5
2.5
2.5
2.5
6.0
6.0
6.0
6.0
6.0
6.0
Siemens AG 2004 All rights reserved
Synchronous Servomotors, 1FT6 (PFT6) - 02.04 Edition
Flow rate [l/min]
5
5
5
5
5
5
5
8
8
8
8
10
10
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