External Trip (EXT)

What does E12. mean?

This fault is triggered by an external error signal received on the multi-function input terminal configured for 'External Trip' (EXT). It means a peripheral system connected to the inverter has detected a fault condition and signaled the inverter to shut down for safety or process control. The inverter displays this code but does not clear the trip status until reset.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Take measures to eliminate any large noise sources in the area that could trigger a false external trip.

2. 4

   Reset the inverter via the STOP/RESET key or by cycling power after resolving the external fault cause.