Siemens SIMOTICS L-1FN3 Configuration Manual page 137

Calculating the temperature rise
Individual cooling circuits
The values for the individual cooling circuits are calculated as follows:
Total cooling
For the total cooling, the following results:
ΔT
gesamt
ΔT
gesamt
Conclusion
For a heat-exchanger unit to be able to cool the motor under the conditions described in this
section, it must be dimensioned for about 720 W. The pressure drop is around 3 bar and the
temperature difference between the flow and return lines of the cooling system is around
3 K.
Note
Recommended manufacturers
You will find the recommended manufacturers for the heat-exchanger units in the appendix.
1FN3 linear motors
Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
= ΔT + ΔT + ΔT
P,H P,P S,ges
= 2.59 K
= 2.3 K + 0.08 K + 0.21 K
Configuration
5.3 Examples
135