Motor Overload Protection - Siemens SIRIUS 3RW55 Manual

7.4.1

Motor overload protection

Operating principle
The approximate temperature of the motor is calculated using the measured motor currents
and the device parameters "Rated operational current" and "Tripping class". This indicates
whether the motor is overloaded or is functioning in the normal operating range.
Note
Take note of the motor parameters.
Take note of the set Motor parameters (Page 72) before activating the motor load protection.
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002
Functions
7.4 Motor protection
109