Siemens SINAMICS G110D - Overtemperature Protection for the Inverter

Functions
6.8 Protection functions
SINAMICS G110D
Operating Instructions, 07/2016, FW V3.63, A5E36768472B AB
123
6.8.2
Overtemperature protection for the Inverter
Temperature monitoring for the inverter
Parameters
Description
P0003 = 3
User access level
3: Expert
P0290 = 2
Temperature monitoring of the Inverter
Selects reaction of inverter to an internal thermal overload condition.
0: Reduce output frequency and output current
1: No reduction, trip (F0004/ 5/ 6) when thermal limits reached
2: Reduce pulse frequency, output current and output frequency
3: Reduce pulse freq. only and trip (F0006) when overload too high
The following physical values influence the inverter overload protection (see dia-
gram):
• Heat sink temperature (r0037[0]); causes A0504 and F0004.
• IGBT Junction temperature (r0037[1]); causes F0004 or F0006.
• Delta temperature between heat sink and junction temperature; causes A0504
and F0006.
• Inverter I
2
t (r0036); causes A0505 and F0005.