HF reactor module: Overtemperature heat sink

What does 237311 mean?

This fault indicates that the heat sink temperature of the HF reactor module has exceeded the permissible limit, triggering an OFF2 reaction and stopping the drive. Causes include insufficient cooling (e.g., fan failure), module overload, or an ambient temperature that is too high, leading to a critical thermal condition. This fault requires immediate attention as sustained overtemperature can lead to irreversible damage to the reactor module and impact the drive's operational integrity and safety.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Assess the motor load to determine if it is contributing to an overload condition on the reactor module and reduce it if excessive.

2. 4

   Allow the module to cool down to a safe operating temperature. This fault can only be acknowledged after the temperature drops below the A05000 alarm threshold.