Siemens SIMOTICS L-1FN3 Configuration Manual

Motor components and options
4.1 Motor components
1FN3 linear motors
88 Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
4.1.2.2
Technical features of temperature sensors
Technical features of PTC temperature sensors
Every PTC temperature has a "quasi-switching" characteristic. The resistance suddenly
increases in the vicinity of the response threshold (nominal response temperature ϑ
NAT
).
PTC temperature sensors have a low thermal capacity – and have good thermal contact with
the motor winding. As a consequence, the temperature sensors and the system quickly
respond to inadmissibly high motor winding temperatures.
Table 4- 1 Technical data of the PTC temperature sensors
Name
Description
Type PTC triplet acc. to DIN 44082
Individual PTC temperature sensor according to
DIN 44081
Response threshold
(nominal response temperature ϑ
NAT
)
120 °C ± 5 K
PTC resistance R (20 °C) at the PTC triplet See the characteristic
if -20 °C < T < ϑ
NAT
-20 K
R ≤ 3 x 250 Ω
R ≤ 750 Ω
Minimum resistance when hot R in the PTC
triplet and in the individual PTC temperature
sensor
See the characteristic
if T ≤ ϑ
NAT
– 5 K
R ≤ 3 x 550 Ω
R ≤ 1650 Ω
if T > ϑ
NAT
+ 5 K
R ≥ 3 x 1330 Ω
R ≥ 3990 Ω
if T > ϑ
NAT
+ 15 K
R ≥ 3 x 4000 Ω
R ≥ 12000 Ω
Typical characteristic R(ϑ) of a PTC tempera-
ture sensor according to DIN 44081

Siemens SIMOTICS L-1FN3 Specifications

General

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