Siemens Sinamics S120 Function Manual page 431

● No reduction (p0290 = 1)
● Control Unit CU310-2 has an electronically controlled fan. If the integrated sensor detects
Function diagrams (see SINAMICS S120/S150 List Manual)
● 8014 Thermal monitoring, power unit
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● r0036 CO: Power unit overload I2t
● r0037 CO: Power unit temperatures
● p0290 Power unit overload response
● p0294 Power unit alarm for I2t overload
Drive functions
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
You should choose this option if it is neither possible to reduce the pulse frequency nor
reduce the output current. The converter does not change its operating point once an
alarm threshold has been overshot, which means that the drive can be operated until it
reaches its shutdown values. Once it reaches its shutdown threshold, the converter
switches itself off with alarm A05000 (power unit: Overtemperature inverter heat sink),
A05001 (power unit: Overtemperature chip) or A07850 (drive: Power unit overload I2t).
The time until shutdown, however, is not defined and depends on the degree of overload.
an overtemperature, the integrated fan is started to cool the Control Unit.
Monitoring and protective functions
8.2 Thermal monitoring and overload responses
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