Advanced Commissioning - Siemens SINAMICS G110M Operating Instructions Manual

Advanced commissioning

6.6 Protection functions
Figure 6-37
Temperature switch
PTC sensor
KTY84 sensor
NOTICE
Motor overheating due to incorrectly connected KTY sensor
If a KTY sensor is connected with incorrect polarity, the motor can become damaged due to
overheating, as the inverter cannot detect a motor overtemperature condition.
• Connect the KTY sensor with the correct polarity.
● Temperature monitoring:
The inverter uses a KTY sensor to evaluate the motor temperature in the range from -48°
C ... +248° C.
Use the p0604 or p0605 parameter to set the temperature for the alarm and fault
threshold.
– Overtemperature alarm (A07910):
– Overtemperature fault (F07011):
–
200
Connect the motor's temperature sensor to the Power Module
The inverter interprets a resistance ≥ 100 Ω as being an opened temperature switch
and responds according to the setting for p0610.
The inverter interprets a resistance > 1650 Ω as being an overtemperature and re-
sponds according to the setting for p0610.
The inverter interprets a resistance < 20 Ω as being a short-circuit and responds with
alarm A07015. If the alarm is present for longer than 100 milliseconds, the inverter
shuts down with fault F07016.
Using a KTY sensor, the inverter monitors the motor temperature and the sensor
itself for wire-break or short-circuit:
- motor temperature > p0604 and p0610 = 0
The inverter responds with a fault in the following cases:
- motor temperature > p0605
- motor temperature > p0604 and p0610 ≠ 0
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 06/2016, FW V4.7.6, A5E31298649B AG