PID Signal Fault

What does E.PID mean?

The inverter output is shut off if, during PID control, the measured feedback value goes outside the limits set by Pr.131 (PID upper limit) or Pr.132 (PID lower limit), or if the absolute deviation from the setpoint exceeds Pr.553 (PID deviation limit). This protective function is not active by default and must be enabled via Pr.554. An erroneous PID signal can lead to unstable process control or unexpected shutdowns, indicating a sensor issue or incorrect parameter tuning.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the function is intended to be active, confirm that Pr.554 (PID signal operation selection) is enabled and configured appropriately.