Line Synchronization Fault

What does F10 mean?

The drive has detected a missing input line phase, as indicated by phase supervision for both diode supply (S1) and active front end (S2). This means one or more incoming power phases are not present or severely degraded. Running with a missing phase can cause damage to the drive and connected equipment.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Examine the input power cables for damage or loose connections.