PTCL Detected Error (OC/SC)

What does PtFL mean?

A PTCL (Positive Temperature Coefficient Logic) detected error, indicating either an open circuit (OC) or short circuit (SC) in the PTC probe circuit connected to logic input LI6. This prevents the drive from accurately monitoring motor temperature, risking motor overheating.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the PTC probe and its cable for physical damage or insulation breakdown.

2. 4

   Ensure the LI6 input is correctly configured in the drive for PTC probe monitoring.