Siemens · SINAMICS S120/S150 Reference List
This fault is triggered when the actual temperature (r4105[9]) for channel 9 on the Terminal Module 150 (TM150) exceeds its configured fault threshold (p4102[19]), or if an associated timer (p4103[9]) 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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Measure the actual surface temperature of the component on channel 9 using an accurate external device and compare it to r4105[9].
Clean all cooling surfaces, filters, and ensure proper function of cooling fans for the TM150 module and the equipment on channel 9.
Perform a thorough inspection of the temperature sensor wiring for channel 9, checking for continuity, shorts, or poor connections to the TM150.
Analyze the operational load and duty cycle of the equipment on channel 9 to confirm it is operating within design specifications.
If the actual temperature is confirmed safe but r4105[9] is high, replace the temperature sensor connected to TM150 channel 9.
If operational conditions justify, adjust parameter p4102[19] (Fault threshold channel 9) to a value that provides sufficient safety margin for the component.