Motor Protection With Temperature Sensor Pt100 - Siemens SINAMICS G220 Operating Instructions Manual

Functions
14.11 Drive functions
p0601[0...n]
p0604[0...n]
p0605[0...n]
p0610[0...n]
p0640[0...n]
14.11.16.9

Motor protection with temperature sensor Pt100

Overview
To protect the motor against overtemperature, the converter can evaluate the Pt100 sensor.
Requirement
You have set the temperature offset via parameter p0624.
With this setting, you correct a systematic temperature deviation, e.g. caused by the
resistance of the measuring sensor connecting cable.
Description of function
With a Pt100 sensor, the converter evaluates the motor temperature in the range -48 °C to
+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.
Parameters
The following list contains the parameters of the "Motor protection with temperature sensor
Pt100" function.
Number
p0335[0...n]
628
Motor temperature sensor type
Mot_temp_mod 2/sensor: alarm threshold
Mot_temp_mod 1/2 sensor threshold and temperature value
Motor overtemperature response
Motor current limit
Name
Motor cooling type
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
[°C]
[°C]
[Arms]
Unit
SINAMICS G220 converter