ABB ACS850 Firmware Manual page 47

The figure below shows typical PTC sensor resistance values as a function of the
motor operating temperature.
Temperature
Normal
Excessive
The figure below shows typical KTY84 sensor resistance values as a function of the
motor operating temperature.
KTY84 scaling
90 °C = 936 ohm
110 °C = 1063 ohm
130 °C = 1197 ohm
150 °C = 1340 ohm
It is possible to adjust the motor temperature supervision limits and select how the
drive reacts when overtemperature is detected.
PTC resistance
0...1.5 kohm
> 4 kohm
Ohm
4000
1330
550
100
ohm
3000
2000
1000
0
-100 0
Program features 47
T
100 200 300
T (°C)