Siemens 1FT7 Configuration Manual page 57

Coolant intake temperature
The coolant intake temperature must be selected so that no condensation forms on the
surface of the motor: T
The motors are designed for operation up to a coolant temperature of +30 °C, while still
maintaining all the specified motor data. If the intake temperature deviates from this, the
continuous torque will change (see the table titled "Derating factors").
Table 3- 5
Coolant intake temperature
Derating factor
Note
Derating is necessary when the coolant has an antifreeze content of < 30% (see the section
titled "Coolant").
Cooling power to be dissipated
The specified values refer to operation at the rated speed with rated torque. The cooling
water temperature must be < 30 °C.
Table 3- 6
Motor type
1FT7062-5WF7
1FT7062-5WK7
1FT7064-5WF7
1FT7064-5WK7
1FT7066-5WF7
1FT7066-5WH7
1FT7068-5WF7
1FT7082-5WC7
1FT7082-5WF7
1FT7082-5WH7
1FT7084-5WC7
1FT7084-5WF7
1FT7084-5WH7
1FT7086-5WC7
1FT7086-5WF7
1FT7086-5WH7
1FT7102-5WC7
1FT7102-5WF7
1FT7 Synchronous Motors
Configuration Manual, (PFT7S) 01/2009, 6SN1197-0AD13-0BP2
> T
cool ambient
Derating factors
Cooling power to be dissipated
Cooling power to be dissipated [W]
450
600
650
950
700
1000
750
500
600
800
800
1000
1300
1000
1400
1600
1000
1200
Mechanical properties of the motors
– 5 K
≤ 30 °C 35 °C
1.0 0.97
3.2 Liquid cooling
40 °C 45 °C
0.95 0.92
57