What does Undervoltage PMx mean?

The low-voltage supply for the KPS module (PMx) is experiencing an undervoltage condition. The rated voltage for this supply is 27.1 V.

• Main supply voltage to the KPS drive is too low.
• Insufficient input power from the grid or transformer.
• Issue with the power supply wiring or connections.
• Internal voltage regulation fault within the drive.

Click steps to track your progress.

1. 1

   Measure the low-voltage supply at the KPS terminals to ensure it provides the rated voltage of 27.1 V.

2. 2

   Check the power supply unit providing the 27.1 V for proper output.