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Advanced commissioning
6.7 Drive protection
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 and the sensor itself for
wire breakage and/or short-circuit:
● Temperature monitoring:
Using a Pt1000 sensor, the converter evaluates the motor temperature in the range from
-48 °C ... +248 °C.
Set the temperature for the alarm and fault thresholds with parameter p0604 or p0605.
– Overtemperature alarm (A07910):
– Overtemperature fault (F07011):
● Sensor monitoring (A07015 or F07016):
– Wire-break:
– Short-circuit:
Parameters
Number
p0335[M]
p0601[M]
p0604[M]
p0605[M]
p0610[M]
p0640[D]
306
- motor temperature > p0604 and p0610 = 0
The converter responds with a fault in the following cases:
- motor temperature > p0605
- motor temperature > p0604 and p0610 >0
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.
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.
Name
Type of motor cooling
Motor temperature sensor type
Mot_temp_mod 2/sensor alarm threshold
Mot_temp_mod 1/2/sensor threshold and temperature value 145 °C
Motor overtemperature response
Current limit
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Factory setting
0
0
130 °C
12
0 Arms
SINAMICS G120XA converter
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