Siemens SINAMICS G220 - Motor Protection with Temperature Sensor KTY84

14.11.16.8 Motor protection with temperature sensor KTY84
Overview
To protect the motor against overtemperature, the converter evaluates a KTY84 sensor.
Requirement
NOTICE
Overheating of the motor due to connection of the KTY84 sensor with incorrect polarity
If a KTY84 sensor is connected with incorrect polarity, the motor can be damaged due to
overheating, since the converter cannot detect the overtemperature.
• Connect the KTY84 sensor with the correct polarity.
Description of function
With a KTY84 sensor, the converter evaluates the motor temperature in the range -48°C ...
+248°C.
You set the temperature for the alarm and fault thresholds with parameters p0604 and
p0605, respectively.
• Alarm overtemperature (A07910)
– Motor temperature>p0604 and p0610=0
• Overtemperature fault (F07011)
The converter responds with a fault in the following cases:
– Motor temperature> p0605
– Motor temperature>p0604 and p0610>0
Sensor monitoring:
• Wire break
After 100milliseconds, the converter transitions into fault state F07016.
• Short-circuit
After 100milliseconds, the converter transitions into fault state F07016.
Parameter p0607 de󹪝nes the time that elapses between the output of alarm and fault for a
temperature sensor error.
Parameters
The following list contains the parameters of the "Motor protection with temperature sensor
KTY84" function.
Number Name Unit
p0335[0...n] Motor cooling type 
Functions
14.11Drive functions
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 627