39
1018856
08/2018 V04
6.14 Temperature sensor
Sensor type
Parameter
T
Nat
[°C]
PTC-91-K135
Rated operating temperature
120
PTC thermistors, because of their very high positive tempe-
rature coefficient at nominal operating temperature (T
nat
),
are ideally suited for motor winding protection.
Due to their principle, the PTC sensors should only be used to
monitor the winding temperature.
For motor protection at speeds greater than zero, temperature sensors are integrated in the motor windings. For applications
with high load where the speed is zero, additional protection (eg I²t monitoring) is recommended. When using the KTY 84-130
the values given in the table can be parametrized in the servo controller or an external evaluation unit.
Table 39.1
Table 39.3
Illustration 39.2
4000
3000
2000
1000
0
T
NAT
-5 °
T
NAT
T
NAT
+5 °
Wider
st
and [Ω]
Temperatur [ºC]
The KTY sensor is used for temperature measurement and
monitoring the motor winding.
Because the KTY sensor provides an analogue temperature
measurement, it is also possible to protect the actuator
grease from temperature overload.
Temperature sensors used in the LynxDrive® Actuator Series
meet the requirements for safe separation according to
EN 50178.
Illustration 39.4
1500
1300
1100
900
700
500
300
-20 0 20 40 60 80 100 120 140 160
Wider
st
and [Ω]
Temperatur [ºC]
Diagram KTY 84-130
Diagram PTC
Sensor type
Parameter
Symbol [Unit]
Warning
Shutdown
KTY 84-130
Temperature
T [°C]
110
120
Resistance
R [Ω]
882 ±3 %
940 ±3 %