Analog Input Loss

What does F29 mean?

This fault indicates that the drive has detected a loss or out-of-range condition on the analog input signal used for speed reference. The fault is generated when parameter A122 (Analog In Loss) is explicitly configured to trigger a fault on loss of signal. This can be caused by disconnected wiring, a faulty analog sensor/source, or an incorrect analog signal level at the drive input terminals.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Check the continuity and integrity of the wiring between the external analog signal source and the drive's analog input terminals (13, 14, 15).

2. 4

   Test the external analog signal source (e.g., potentiometer, sensor) independently to ensure it is powered, functional, and providing a stable output signal within its specified range.