Encoder Disconnection

What does E80 mean?

This fault indicates that the encoder connected for feedback has been disconnected, has a wiring error, or is of an unsupported type (e.g., not line driver output). Without valid encoder feedback, the inverter cannot perform accurate speed or position control, leading to a shutdown to prevent erratic motor behavior.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Confirm that the encoder type (e.g., line driver output, pulse count) is compatible with the inverter's specifications and settings.

2. 4

   Review and correctly set encoder parameters (P003, P004, P011) in the inverter to match the installed encoder.

3. 5

   If all connections and settings are correct, the encoder itself may be faulty and require replacement.