AC Drive Board Overtemperature Alarm

What does 133 mean?

The temperature on the AC drive's power board has reached an elevated level, triggering an alarm before reaching a critical fault condition. This indicates that the board's temperature is approaching its fault limit, likely due to insufficient cooling or high ambient temperatures. Although not yet a fault, continuous operation under these conditions can lead to component degradation and eventual fault tripping.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the cooling fan for proper operation and any obstructions.

2. 4

   Review the drive's parameter settings, especially the switching frequency, in relation to the ambient temperature and motor load.