Bimetallic switch
The converter interprets a resistance ≥ 100 Ω as an opened bimetallic switch and responds
according to the setting for p0610.
PTC sensor
The converter interprets a resistance > 1650 Ω as being an overtemperature and responds
according to the setting for p0610.
The converter 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 converter shuts down with
fault F07016.
Pt1000 sensor
Using a Pt1000 sensor, the converter monitors the motor temperature in the range -48 °C ...
+248 °C and the sensor itself for wire breakage or short-circuit.
Settings:
● Temperature monitoring:
– Overtemperature alarm (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 (A07015 or F07016):
– Wire-break:
The converter interprets a resistance > 2120 Ω as a wire-break and outputs the alarm
A07015. After 100 milliseconds, the converter changes to the fault state with F07016.
– Short-circuit:
The converter interprets a resistance < 603 Ω as a short-circuit and outputs the alarm
A07015. After 100 milliseconds, the converter changes to the fault state with F07016.
Pt100 sensor
Using a Pt100 sensor, the converter monitors the motor temperature.
When using a Pt100 sensor, you require a free analog output and a free analog input of the
converter.
You can connect the sensor at analog input AI 0 (terminals 3 and 4) as well as at analog input
AI 1 (terminals 11 and 12).
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Figure 6-82
Two-wire connection, three-wire connection and four-wire connection
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Advanced commissioning
6.8 Drive protection
SINAMICS G120X converter
410
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
