62
1018854 8/2018
V03
6.23 Temperature Sensors
Sensor type
Parameter
T
Nat
[°C]
PTC
Rated operating temperature
120 (CHA-14A ... 17A)
145 (CHA-20A ... 58A)
PTC thermistors, because of their very high positive tempe-
rature coefficient at nominal operating temperature (T
nat
),
are ideally suited for motor winding predection.
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 (e.g. I
2
t monitoring) is recommended.
Table 62.1
Table 62.3
Illustration 62.2
4000
3000
2000
1000
0
T
NAT
-5 °
T
NAT
T
NAT
+5 °
Resistance [Ω]
Temperature [ºC]
When using the KTY 84-130, the values given in the table
must be parameterized in the servo controller or in an exter-
nal measurement device.
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 predect the actuator
grease from temperature overload.
Illustration 62.4
1500
1300
1100
900
700
500
300
-20 0 20 40 60 80 100 120 140 160
Resistance [Ω]
Temperature [ºC]
Diagram KTY 84-130
Diagram PTC
Sensor type
Parameter
Symbol
[Unit]
Warning
Shutdown
KTY 84-130
Temperature
T [°C]
80
90