Siemens · SINAMICS S120/S150 Reference List
This fault is triggered when the actual temperature (r4105[5]) for channel 5 on the Terminal Module 150 (TM150) exceeds its configured fault threshold (p4102[11]), or if an associated timer (p4103[5]) expires. If a BICO interconnection exists, this fault will cause the drive to shut down. The fault will persist until the temperature falls below the threshold (minus hysteresis) and is acknowledged.
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Use an independent thermal measurement device to check the actual temperature of the component on channel 5, comparing it with r4105[5].
Clean all air vents, filters, and heat exchange surfaces of the TM150 module and the associated equipment on channel 5.
Examine the wiring connections for the temperature sensor on channel 5 for any loose terminals, corrosion, or damage.
Assess the current operational parameters and load conditions to determine if the equipment on channel 5 is being thermally overstressed.
If the actual temperature is within limits but r4105[5] is high, replace the temperature sensor connected to TM150 channel 5.
If justified by operational data, increase parameter p4102[11] (Fault threshold channel 5) to a setting that aligns with the component's safe operating envelope.