Siemens SINAMICS G120D Operating Instructions Manual page 233

Parameter
p0612
p0614
p0615
p0621
p0622
p0625
More information on temperature calculation can be found in function plans 8016 and 8017
and the list manual.
Converter with control units CU250D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
Description
Mot_temp_mod activation
.00 1 signal: Activate motor temperature model 1 (I2t) for permanently excited
synchronous motors
.01 1 signal: Activate motor temperature model 2 for asynchronous motors
.02 1 signal: Activate motor temperature model 3 for 1FK7 encoderless synchro-
nous motors
p0612.02 cannot be set for every inverter.
.09 1 signal: Activate motor temperature model 2 expansions
Thermal resistance adaptation reduction factor (factory setting: 30 %)
Derating factor for overtemperature of the thermal adaptation of the stator and rotor
resistance
Mot_temp_mod 1 (I2t) Interference threshold (factory setting: 180 °C)
Interference threshold for monitoring the motor temperature in motortemperature
model 1.
After exceeding the interference threshold, the converter reports fault F07011.
Identification of stator resistance (Rs) when switched on again (factory setting: 0)
The converter measures the current stator resistance and from this calculates the
current motor temperature as the start value of the thermal motor model.
0: No Rs identification
1: Rs identification on first switching on the motor
2: Rs identification each time the motor is switched on
Motor excitation time for Rs_ident on switching on again
The converter sets the parameter value to the corresponding result of the motor data
identification.
Motor ambient temperature during commissioning (factory setting: 20 °C)
Enter the ambient motor temperature in °C at the instant that the motor data is ac-
quired.
Advanced commissioning
7.7 Protection functions
233