Function Diagrams And Parameters - Siemens SINAMICS S120 Function Manual

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Monitoring functions and protective functions

9.5 Thermal motor protection

The motor temperatures are calculated based on the motor measured values. The calculated

temperatures are indicated in the parameters:

● r0034 thermal motor load

● p0613 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

Function diagrams and parameters

Messages (see SINAMICS S120/S150 List Manual)

Function diagrams (see SINAMICS S120/S150 List Manual)

Important settings

Explanation:

Alarm threshold

If the model motor temperature (r0632) exceeds the alarm threshold, alarm A07012

"Drive: Motor temperature model 1/3 overtemperature" is output

Fault threshold

If the model motor temperature (r0632) exceeds the fault threshold, fault F07011

"Drive: Motor overtemperature" is output.

Boost factor

Defines the boost factor for the copper losses at standstill.

Drive: Motor overtemperature

Drive: Motor temperature model 1/3 overtemperature

Signals and monitoring functions - thermal monitoring motor, Mot_temp

Signals and monitoring functions - motor temperature model - 1 (I2t)

Signals and monitoring functions - motor temperature model 2

Signals and monitoring functions - motor temperature model 3

Function Manual, 11/2017, 6SL3097-4AB00-0BP5

Drive functions

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