Thermal Motor Model 3 - Siemens Sinamics S120 Function Manual

Monitoring and protective functions
8.5 Thermal motor protection
● p0627 = overtemperature, stator winding
● p0628 = rotor winding temperature rise
Motor temperature rises are calculated on the basis of motor measured values. The
calculated temperature rises are indicated in the parameters:
● r0630 Motor temperature model ambient temperature
● r0631 Motor temperature model stator iron temperature
● r0632 Motor temperature model stator winding temperature
● r0633 Motor temperature model rotor temperature
When operated with an additional KTY84 temperature sensor, the calculated temperature
value from thermal motor model 2 is continuously corrected to track the measured
temperature value. After deactivating the temperature sensor with p0600 = 0, the calculation
continues with the last measured temperature value.
8.5.1.3

Thermal motor model 3

Thermal motor model 3 is intended exclusively for use with motors with the 1FK7Basis
design. This motor design has no integrated temperature sensors. The thermal motor model
3 is a thermal 3-mass model. It is activated with p0612.02 = 1. The necessary parameters
are automatically transferred when commissioning via DRIVE-CLiQ.
Motor temperature rises are calculated on the basis of motor measured values. The
calculated temperature rises are indicated in the parameters:
● r0034 motor utilization
● r0630 Motor temperature model ambient temperature
● r0631 Motor temperature model stator iron temperature
● r0632 Motor temperature model stator winding temperature
● r0633 Motor temperature model rotor temperature
Table 8- 2
1
2
3
4
5
6
7
8
434
List of motors
Motor type
1FK7041 - 8GF71
1FK7042 - 8GF71
1FK7060 - 8GF71
1FK7063 - 8GF71
1FK7100 - 8FC71
1FK7101 - 8FC71
1FK7103 - 8FB71
1FK7105 - 8FB71
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Drive functions