9

Transistor Overtemperature

Allen-Bradley · PowerFlex 700 AC Drives

What does 9 mean?

The output transistors have exceeded their maximum operating temperature. This indicates that the power semiconductors are overheating, which can lead to premature failure of the drive.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Check for excess load on the motor, which would increase drive current and heat generation.

Source: Allen-Bradley PowerFlex 700 AC Drives
Open Manual (Page 88)