HF reactor module: Overtemperature or fan failure

What does 237313 mean?

This fault is triggered when alarm A37312 (overtemperature or fan failure in the reactor module) persists for more than 30 seconds, leading to an OFF2 reaction and stopping the drive. The underlying issues are typically a disconnected/defective connector between the reactor and damping module, a faulty reactor module fan, or an ambient temperature that exceeds safe limits. This fault indicates a critical condition requiring immediate attention to prevent severe damage to the HF reactor module and ensure system safety.

• Persistent cooling fan failure (e.g., seized motor, continuous power supply interruption at X3) that was not rectified within 30 seconds of initial detection.
• Severe and sustained airflow blockage (e.g., complete blockage of cabinet vents) causing the reactor module's temperature to rise continuously over 30 seconds.
• Continuous operation of the HF reactor module under excessive overload conditions (e.g., motor current sustained above 120% of rated current for >30s).
• Faulty internal temperature sensor (e.g., X12) or fan monitoring circuit repeatedly reporting an overtemperature or fan failure for over 30 seconds.
• Inadequate cabinet cooling system (e.g., AC unit undersized, blocked filter mats) leading to a general ambient overtemperature that persists.

Click steps to track your progress.

1. 1

   Immediately power down the system and thoroughly inspect the cooling fan (e.g., X3 connector, fan blades) for any mechanical or electrical failures.

2. 2

   Clear all obstructions from the reactor module's heat sinks and cabinet ventilation openings; ensure free air circulation around the unit.

3. 3

   Measure the actual current through the reactor module (r0067) and ensure it is within the continuous operating limits specified on the nameplate.

4. 4

   Verify the functionality of the internal temperature sensor (e.g., X12) by measuring its resistance at different temperatures if accessible.

5. 5

   Check the control cabinet's cooling system (e.g., AC unit, filter fans) for proper operation and clean/replace any clogged air filters.

6. 6

   Restart the system only after confirming the root cause from A37312 has been addressed and rectified.