Functions
8.22 Thermal motor protection and overload responses
Control Units CU240S
8-156 Operating Instructions, 11/2006, A5E00766042B AA
With KTY84 temperature sensor (P0601 = 2)
The KTY84 must be connected so that the diode is in the conductive direction. This means
that the anode is connected to terminal 14 and the cathode to terminal 15. If the temperature
monitoring function is activated with the setting P0601 = 2, the temperature of the sensor
(i.e. of the motor windings) is written into parameter r0035. The threshold temperature Ï‘
trip
of
the motor can now be set using the warning threshold, motor overtemperature Ï‘
warn
(parameter P0604) (the factory setting is 130 ï½°C). The following applies:

WULS

ZDUQ
3
˽
˽
Figure 8-83 KTY84 characteristics for 1LG/1LA motors
Wire breakage or short-circuit
If the circuit between the inverter and PTC or KTY84 sensor is interrupted or there is a short-
circuit, the inverter is shut down (tripped) and fault F0015 is displayed.
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