Siemens SIMOTICS L-1FN3 Configuration Manual

Configuration
5.3 Examples
1FN3 linear motors
Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
133
5.3.3.2
Example: Dimensioning the cooling
Requirement
A peak load motor with a primary section of the 1FN3300-2WC00 series is to be operated
with an effective force of the duty cycle F
eff
= 0.8 F
N
. A primary section main cooler is
necessary for this application. The primary section precision cooler and the secondary
section cooling system should also be used to prevent heat being transferred to the
machine.
The secondary section track is approximately 1.6 m long. There is a coupling point for the
heatsink profiles. The flow and return lines of the secondary section cooling system are
connected via combi distributors.
The medium flows through the primary section precision cooler, secondary section cooling
system and primary section main cooler in that order. To maintain the temperature difference
of 4 K between the flow temperature and the surface of the primary section precision cooler,
the recommended values from the corresponding data sheet are used.
Data from data sheet:
Volume flow:
V
gesamt
= 4 l/min
for all coolers
Pressure drop:
Δp
P,H
= 0.32 bar
for main cooler
Δp
P,P
= 0.33 bar
for precision cooler
Δp
S
= 0.09 bar/m
for heatsink profiles
Δp
KV
= 0.42 bar
for each combi distributor
Δp
KS
= 0.31 bar
for each coupling point
Maximum heat dissipation:
Q
P,H,MAX
= 995 W
for main cooler
Q
P,P,MAX
= 35 W
for precision cooler
Q
S,MAX
= 93 W
for secondary section cooling system
Calculating the cooling capacity
Individual cooling circuits
The following results for the individual cooling circuits:
P
kühl,P,H
= Q
P,H
≃ 995 W ‧ 0.8
2
= 636.8 W
P
kühl,P,P
= Q
P,P
≃ 35 W ‧ 0.8
2
= 22.4 W
P
kühl,S
= Q
S
≃ 93 W ‧ 0.8
2
= 59.52 W
Total cooling
For a heat-exchanger unit that is designed for the complete series configuration, the
following must be assumed as a minimum cooling rating:
P
kühl,gesamt
= P
kühl,P,H
+ P
kühl,P,P
+ P
kühl,S
= 636.8 W + 22.4 W + 59.52 W
P
kühl,gesamt
=
718.72 W

Siemens SIMOTICS L-1FN3 Specifications

General

Brand	Siemens
Model	SIMOTICS L-1FN3
Category	Engine
Language	English