Siemens SIMOTICS L-1FN3 Configuration Manual page 68

Mechanical properties
3.1 Cooling
● If you use the machine cooling circuits to also cool the motors, you must ensure that the
coolant fully complies with the requirements listed in this chapter.
● Also note the maximum non-operational times of cooling circuits corresponding to the
coolant manufacturer's data.
Selecting cooling components
When selecting the cooling components to be used, you must consider the following:
● The main cooler is sufficient if the thermal transfer into the machine structure does not
have a negative impact on the system.
● If increased demands are placed on the precision of the machine, use of a primary
section precision cooler and secondary section cooling according to the Thermo-
Sandwich® principle is required.
● If you use primary sections 1FN3600 to 1FN3900, you will definitely need secondary
section cooling for heat dissipation of the secondary sections.
Interconnecting cooling circuits
NOTICE
Leaks associated with rigid connections
Rigid connections between the cooling circuits can lead to problems with leaks!
• Use flexible connections (hoses) when interconnecting cooling circuits.
You can connect primary section cooling circuits in parallel to simplify connection systems
and piping. In this case, you must carefully take into consideration the temperature and
pressure differences between the flow and return for each primary section.
Note
Connect the cooling channels of the primary sections in parallel. This ensures that each
primary section is supplied with coolant with the same flow temperature.
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Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
1FN3 linear motors