Siemens 1FT7 Series, Configuration Manual

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Mechanical properties of the motors
3.2 Liquid cooling
1FT7 Synchronous Motors
Configuration Manual, (PFT7S) 01/2009, 6SN1197-0AD13-0BP2
57
Coolant intake temperature
The coolant intake temperature must be selected so that no condensation forms on the
surface of the motor: T
cool
> T
ambient
– 5 K
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 Derating factors
Coolant intake temperature ≤ 30 °C 35 °C 40 °C 45 °C
Derating factor 1.0 0.97 0.95 0.92
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 Cooling power to be dissipated
Motor type Cooling power to be dissipated [W]
1FT7062-5WF7 450
1FT7062-5WK7 600
1FT7064-5WF7 650
1FT7064-5WK7 950
1FT7066-5WF7 700
1FT7066-5WH7 1000
1FT7068-5WF7 750
1FT7082-5WC7 500
1FT7082-5WF7 600
1FT7082-5WH7 800
1FT7084-5WC7 800
1FT7084-5WF7 1000
1FT7084-5WH7 1300
1FT7086-5WC7 1000
1FT7086-5WF7 1400
1FT7086-5WH7 1600
1FT7102-5WC7 1000
1FT7102-5WF7 1200