CT It.AC fault code meaning
CT / It.AC
Series: Commander GP
It.AC 20
AC drive
Meaning: The [I x t] thermal overload accumulator has reached 100%
Possible causes
Source: CT Control Techniques Commander GP User Guide E.3 Trip codes P E-1–E-3
Series: Commander SE
It.AC 20
AC drive
Meaning: Motor overload on current x time | Too much mechanical load; High impedance phase to phase or phase to earth short circuit at drive output
Possible causes
Source: CT Control Techniques Commander SE User Guide 8.1 Trip codes P65-67