Siemens SINAMICS G120 Operating Instructions Manual page 89

Temperature Sensor
Parameter Description (Parameter name and factory setting (if not variable) in bold)
P0601 = 0 Motor temperature sensor
or 0: No sensor (→ P0610)
P0601 = ? 1: PTC thermistor (→ P0604)
2: KTY84 (→ P0604)
P0604 = ? Threshold motor temperature
Enter the warning threshold for motor overtemperature protection. The trip temperature
(threshold) is where either the inverter is tripped or Imax is reduced (P0610) which is always
10 % above the warning threshold.
P0610 = 2 Motor I2t temperature reaction
Defines the reaction when the mtor temperature reaches the warning threshold.
0: No reaction, only a warning
1: Warning and I
2: Warning and trip (F0011)
Temperature calculation without sensor
In the vector control mode (P1300 = 20/21/22/23) Temperature calculations is possible
without sensor. The following parameters have to be set.
Parameter Description (Parameter name and factory setting (if not variable) in bold)
P0621= 1 Motor temperature identification after restart
0: No identification
1: Temperature identification only at first "motor on" after power cycle
2: Temperature identification at each motor on.
P0622 = Motor magnetizing time for temperature identification after stator restistance identification
This parameter will be initialised with a value for one calculating cycle of the motor
temperature. It depends on the identified rotor time constant. Due to accuracy reasons this
calculation may be performed several times.
Control Units CU240S
Operating Instructions, 11/2006, A5E00766042B AA
reduced (this results in a reduced output frequency)
max
Commissioning (software)
5.7 Commissioning modes
Setting
Setting
5-33