Siemens · SINAMICS S120/S150 Reference List
This fault is triggered when the actual temperature (r4105[3]) for channel 3 on the Terminal Module 120 (TM120) or Terminal Module 150 (TM150) exceeds its configured fault threshold (p4102[7]), or if an associated timer (p4103[3]) 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.
Click steps to track your progress.
Use a calibrated external temperature probe to measure the actual temperature of the component monitored by channel 3 and compare it to r4105[3].
Inspect all cooling components, including fans and heat sinks, for the TM120/TM150 module and the equipment on channel 3, ensuring they are clean and functional.
Examine the cabling from the temperature sensor on channel 3 to the TM120/TM150 module for any signs of damage, shorts, or loose connections.
Analyze the machine's load profile and operating parameters to determine if the equipment on channel 3 is consistently operating at or above its rated capacity.
If the measured temperature is within acceptable limits but r4105[3] indicates a fault, replace the temperature sensor for channel 3.
If operational analysis justifies it, adjust parameter p4102[7] (Fault threshold channel 3) to a higher value that ensures both safety and continuous operation within expected limits.