TM150 Temperature Alarm Channel 5

What does A35411 mean?

This alarm is initiated when the actual temperature (r4105[5]) for channel 5 on Terminal Module 150 (TM150) exceeds its configured alarm threshold (p4102[10]). A timer (p4103[5]) is also started. The alarm will clear once the temperature falls below the threshold, factoring in the defined hysteresis (p4118[5]).

• Monitored equipment on channel 5 running hotter than usual due to continuous heavy-duty operation or insufficient cooling capacity.
• Alarm setpoint p4102[10] configured below the safe operating temperature range, causing nuisance alarms.
• Poor thermal contact between the temperature sensor and the component it monitors on channel 5.
• Accumulation of dirt or debris on the component's surface, reducing its ability to dissipate heat.
• Intermittent electrical load fluctuations causing temporary localized overheating detected by channel 5.

Click steps to track your progress.

1. 1

   1. Record the current temperature r4105[5] from the TM150 module and compare it with the component manufacturer's specifications.

2. 2

   2. Review the parameter settings for p4102[10] (alarm threshold) and p4103[5] (timer delay) to confirm correct values.

3. 3

   3. Physically inspect the temperature sensor mounting on the component for proper thermal coupling and mechanical integrity.

4. 4

   4. Measure the ambient temperature near the monitored component using a separate thermometer to identify external heat sources.

5. 5

   5. Clean the heat-dissipating surfaces of the component connected to channel 5 to improve thermal transfer.