Siemens SIMOTICS L-1FN3 Configuration Manual page 65

For size 1FN3600 and larger, three heatsink profiles with a total of six cooling channels are
used. The lateral profiles protrude just a little beyond the secondary section. The middle
(additional) heatsink profile is attached by the line of screws in the center of the secondary
sections.
The surfaces of the heatsink profiles are thermally optimized. The heat is transferred to the
contact area of the secondary section track and from there to the cooling channel. Toward
the machine structure, however, the contact area is small, so that the heat transfer is kept at
a minimum.
The heatsink profiles are available in lengths up to 3 m.
Secondary section end pieces
The following secondary section end pieces at the start and end of the secondary section
track close the cooling circuit and facilitate the cooling medium connection through uniform
connectors:
● Combi distributor
● Combi adapter / combi end piece
As standard, combi distributors are used as secondary section end pieces. Secondary
section end pieces are available for all sizes. You can use combi adapters / combi end
pieces as an alternative for sizes 1FN3050 ... 1FN3450. Cover end pieces are not directly
involved in the cooling of the secondary sections.
The following figures show the secondary section cooling with different secondary section
end piece models.
Figure 3-4
1FN3 linear motors
Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
Secondary section cooling for motors of sizes 1FN3050 ... 1FN3450 with combi
distributors (side and top view)
Mechanical properties
3.1 Cooling
63